Purple gemstones have captivated humanity for thousands of years. In ancient Rome and Greece, purple was the color of emperors and gods — and the gemstones that carried that regal hue were treated as treasures beyond ordinary reach. Today, thanks to discoveries across five continents, purple gems are available to everyone — from collectors seeking the rarest violet diamonds to everyday jewelry lovers who adore a classic amethyst.

This complete guide covers every major purple gemstone you are likely to encounter — their names, properties, hardness, meanings, price per carat, and how to choose the right one for your needs. Whether you are buying an engagement ring, building a collection, or simply curious about these stunning violet stones, this guide has every answer you need.

 

What Makes a Gemstone Purple?

The purple color in gemstones comes from specific trace elements within their crystal structure. Different minerals create purple through different mechanisms:

• Iron impurities (Fe³⁺) inside quartz crystals, activated by natural radiation underground, produce the deep violet of amethyst.
• Vanadium and chromium in corundum give purple sapphires their rich plum and lilac tones.
• Manganese is responsible for the delicate violet hues of tanzanite and spessartine garnet.
• Hydrogen concentration during diamond formation creates the rarest purple diamonds.
• Chromium and iron together in spinel produce everything from soft lavender to magenta.

The intensity of purple depends on the concentration of these trace elements and the purity of the host crystal. Gems with the most vivid, evenly saturated color — not necessarily the darkest — command the highest prices.

 

Purple Gemstones at a Glance: Comparison Table

Use this reference table to quickly compare all major purple gemstones by hardness, color, price, and suitability:

 

Gemstone	Mohs Hardness	Color Range	Price Per Carat (Fine)	Best Use
Amethyst	7	Pale lilac to deep violet	$5 – $200	Everyday jewelry
Tanzanite	6.5 – 7	Blue-violet to purple	$300 – $1,200+	Statement pieces
Purple Sapphire	9	Lavender to deep plum	$500 – $1,000+	Engagement rings
Purple Spinel	8	Lavender to magenta	$200 – $800	Fine jewelry
Iolite	7 – 7.5	Violet-blue	$50 – $150	Everyday wear
Charoite	5 – 6	Swirling violet	$50 – $200	Collectors / cabochons
Sugilite	6 – 6.5	Deep royal purple	$30 – $500+	Collectors
Kunzite	6.5 – 7	Pale pink-violet	$10 – $20	Occasional wear
Purple Garnet	6.5 – 7.5	Rose-red to purple	$100 – $400	Fine jewelry
Purple Diamond	10	Lilac to deep grape	$1,900 – $25,000	Luxury investment
Alexandrite	8.5	Green (day) / Purple (night)	$3,000 – $15,000+	Collectors / rings
Lepidolite	2.5 – 4	Soft lavender	$1 – $20	Collectors / beads
Purple Fluorite	4	Light lavender to deep violet	$5 – $40	Display / collectors

 

The 14 Most Important Purple Gemstones

 

1. Amethyst — The Most Popular Purple Gemstone

Mineral: Quartz (SiO₂)

Mohs Hardness: 7

Color Range: Pale lavender to deep royal violet

Price Per Carat: $5–$200 (finest Uruguayan material up to $200+)

Birthstone: February

Amethyst is the world’s most recognized purple gemstone and the most widely used in jewelry. It is a variety of crystalline quartz whose color comes from iron impurities (Fe³⁺) and natural radiation exposure over millions of years deep underground. The finest amethysts come from Uruguay, known for their exceptionally deep, saturated violet; Brazil produces the majority of commercial supply, while Zambia yields rich reddish-purple stones.

Amethyst ranges from the palest translucent lilac to an intense, almost royal purple. Gemologists consider deeply saturated stones of even color to be the highest quality. One important care note: prolonged direct sunlight can fade amethyst’s color over time, so store it away from bright light. With a Mohs hardness of 7, it is durable enough for most jewelry applications.

Historically, amethyst was considered as precious as rubies and emeralds until large deposits were discovered in Brazil in the 18th century, which made it widely available. The ancient Greeks believed amethyst prevented intoxication — the word “amethystos” literally means “not drunk” in Greek.

 

2. Tanzanite — The One-Source Wonder

Mineral: Zoisite

Mohs Hardness: 6.5–7

Color Range: Blue-violet to purple, trichroic

Price Per Carat: $300–$1,200+ (fine quality)

Birthstone: December (modern)

Tanzanite is one of the rarest gemstones on Earth — it is found in only one place in the world: a small area near Merelani, in the foothills of Mount Kilimanjaro in Tanzania. Because of this single-source supply, tanzanite is considered an irreplaceable gem; once the deposit is exhausted, there will be no more. Tiffany & Co. named the stone after its country of origin when they began marketing it in 1968.

What makes tanzanite especially fascinating is its trichroism — the ability to show three different colors (blue, violet, and burgundy) depending on the viewing angle. The way a stone is cut determines which color dominates. Blue-dominant tanzanite fetches higher prices than purple-dominant material. Almost all commercial tanzanite is heat-treated to convert the brownish raw zoisite into the prized blue-violet hue.

With a Mohs hardness of 6.5–7 and perfect cleavage, tanzanite requires careful handling — it is best suited for pendants, earrings, and occasional-wear rings rather than daily-wear pieces.

 

3. Purple Sapphire — The Most Durable Purple Gem

Mineral: Corundum (Al₂O₃)

Mohs Hardness: 9

Color Range: Soft lavender to deep plum and violet

Price Per Carat: $500–$1,000+ (high quality)

Purple sapphire is the only purple gemstone we recommend without any reservation for daily-wear engagement rings. With a Mohs hardness of 9 (second only to diamond) and excellent toughness, it withstands the rigors of everyday life with ease. Purple sapphires come in shades ranging from pale, airy lavender to deep, saturated plum — and some rarer specimens are color-change stones that appear violet in daylight and shift to a distinct purple under incandescent light.

Most people associate sapphire with blue, but the finest vivid pink and purple sapphires are among the most valuable and rarest in the entire corundum family. Sri Lanka (Ceylon), Madagascar, and Myanmar are the primary sources. Ceylon sapphires tend toward cooler, slightly bluer purples; Burmese material runs warmer and richer.

Lab-grown lavender sapphires offer identical optical and physical properties at 70–90% of the cost of natural stones — an excellent option for buyers who prioritize durability and color without the premium of a natural, certified gem.

 

4. Purple Spinel — The Underrated Gem

Mineral: Spinel (MgAl₂O₄)

Mohs Hardness: 8

Color Range: Soft lavender to rich magenta

Price Per Carat: $200–$800

Birthstone: August (modern)

Spinel has one of the most colorful histories in gemology — for centuries, large red spinels were mistaken for rubies and set in the crown jewels of various empires. Purple and violet spinels have been historically overlooked, but connoisseurs are increasingly recognizing them as among the finest colored gems available.

Purple spinel owes its color to trace amounts of iron, chromium, and cobalt within its crystal structure. It scores 8 on the Mohs scale, placing it just below sapphire and corundum in durability, making it an excellent choice for fine jewelry including rings. Unlike many other colored gems, most purple spinels are untreated, meaning their color is entirely natural.

 

5. Iolite — The Viking’s Compass

Mineral: Cordierite (Mg₂Al₄Si₅O₁₈)

Mohs Hardness: 7–7.5

Color Range: Violet-blue, strongly pleochroic

Price Per Carat: $50–$150

Iolite has a fascinating history: Viking navigators reportedly used thin slices of iolite as polarizing filters to determine the position of the sun on overcast days, earning it the nickname “the Viking’s Compass.” The stone is named after “ios,” the Greek word for violet.

Iolite is strongly pleochroic — it shows dramatically different colors (deep violet, blue, and near-colorless) when viewed from different angles. This makes cutting iolite a skilled process, as the orientation of the gem determines its visible color. With a hardness of 7–7.5 and a very affordable price point, iolite is an excellent choice for those who love the violet-blue color family without paying tanzanite prices.

 

6. Charoite — The Swirling Siberian Gem

Mineral: Charoite silicate

Mohs Hardness: 5–6

Color Range: Swirling violet, lavender, and white

Price Per Carat: $50–$200

Charoite is found only in one location on Earth: the Murun Massif in Siberia, Russia, near the Charo River. Its most remarkable feature is its deeply swirling, fibrous purple patterns — no two charoite stones look alike. The stone is typically cut into cabochons to showcase these distinctive visual patterns. With a hardness of 5–6, it is better suited for pendants, brooches, and earrings than rings subjected to daily wear.

 

7. Sugilite — The Royal Purple Collector’s Gem

Mineral: Sugilite (complex cyclosilicate)

Mohs Hardness: 6–6.5

Color Range: Pink-purple to deep royal violet

Price Per Carat: $30–$500+ (finest opaque material)

Sugilite was discovered in Japan in 1944 by geologist Ken-ichi Sugi, but it remained largely unknown outside Asia until major deposits were found in South Africa in the late 1970s. The finest sugilite displays an intense, even royal purple color and is either translucent or opaque. High-quality, richly colored sugilite commands substantial prices, especially in larger pieces. It is primarily a collector’s stone and is frequently used in cabochons and carvings.

 

8. Kunzite — The Delicate Evening Stone

Mineral: Spodumene (LiAlSi₂O₆)

Mohs Hardness: 6.5–7

Color Range: Pale pink-violet to light purple

Price Per Carat: $10–$20

Kunzite was first described by gemologist George Kunz (of Tiffany & Co. fame) in 1902, and large deposits are found in California, Brazil, Afghanistan, and Pakistan. It can form extraordinarily large crystals — some exceeding 1,000 carats — allowing jewelers to cut generous centerpieces. Despite its elegant color, kunzite has two important limitations: its color fades with prolonged light and heat exposure, and it has perfect cleavage in two directions, making it fragile. It is best reserved for occasional evening wear and should be stored in cool, dark conditions.

 

9. Alexandrite — The Color-Change Miracle

Mineral: Chrysoberyl (BeAl₂O₄)

Mohs Hardness: 8.5

Color Range: Green/teal (daylight) → Red/purple (incandescent)

Price Per Carat: $3,000–$15,000+ (fine natural)

Birthstone: June

Alexandrite is famous for one of the most dramatic optical effects in the gem world: it appears green or bluish-green in daylight and transforms to red or purplish-red under incandescent light. This extraordinary color change — sometimes described as “emerald by day, ruby by night” — is caused by chromium’s ability to absorb light differently across the visible spectrum. Fine natural alexandrite from Russia’s Ural Mountains is among the most expensive gems per carat anywhere in the world. Lab-grown alexandrite offers the same color change at a fraction of the cost.

 

10. Rhodolite Garnet — The Romantic Purple-Red

Mineral: Pyrope-almandine garnet

Mohs Hardness: 6.5–7.5

Color Range: Rose, raspberry, and purple-red

Price Per Carat: $100–$400

Birthstone: January

Rhodolite garnet occupies a unique space in the purple gem world — it sits at the intersection of rose, raspberry, and purple-red. It is mined primarily in Sri Lanka, Mozambique, and Tanzania. Unlike most garnets (which are a deep wine-red), rhodolite’s warm, romantic hue makes it one of the most desirable garnet varieties. Some rhodolite garnets exhibit a mild color-shift under different lighting conditions. With a hardness of 6.5–7.5, it is suitable for most jewelry styles with reasonable care.

 

11. Purple Diamond — The Ultimate Luxury Purple Gem

Mineral: Diamond (Carbon)

Mohs Hardness: 10

Color Range: Orchid, lilac, lavender, grape

Price Per Carat: $1,900–$25,000+

Purple diamonds are among the rarest colored stones on Earth. Their color is caused by unusually high concentrations of hydrogen during formation, which also makes them harder than colorless diamonds. Shades have poetic names — orchid, lilac, lavender, and grape — with deeper, more saturated purples commanding exponentially higher prices. Because of their extreme rarity, finding a high-quality purple diamond requires working with specialist dealers. A deep purple diamond of one carat can fetch tens of thousands of dollars.

 

12. Lepidolite — The Calming Lavender Mica

Mineral: Mica group (potassium lithium aluminum silicate)

Mohs Hardness: 2.5–4

Color Range: Pale lavender to soft pink-purple

Price Per Carat: $1–$20

Lepidolite is a soft mica mineral that typically occurs in pale lavender and pink-purple tones. Because of its low hardness, it is not suitable for rings or bracelets in traditional settings — it is primarily used in cabochons, beads, carvings, and decorative objects. It is popular in the crystal-healing community for its association with calming energy and stress relief. For collectors and those seeking affordable lavender stones for non-ring jewelry, lepidolite is a budget-friendly option.

 

13. Purple Fluorite — The Collector’s Display Gem

Mineral: Fluorite (CaF₂)

Mohs Hardness: 4

Color Range: Pale lavender to deep violet, often banded

Price Per Carat: $5–$40

Purple fluorite is a highly affordable gemstone beloved for its vivid color and glassy luster. Many specimens show beautiful color zoning or banding within the crystal. However, with a hardness of only 4, fluorite is fragile and prone to scratching — it is best suited for display crystals, collector specimens, and low-wear jewelry like earrings and pendants. It is famous for strong blue-white fluorescence under ultraviolet light, which is actually where the word “fluorescence” comes from.

 

14. Lavender Jade — The Imperial Purple

Mineral: Jadeite (NaAlSi₂O₆)

Mohs Hardness: 6.5–7

Color Range: Soft lavender to muted purple

Price Per Carat: $50–$500+ depending on quality

Lavender jade — a jadeite variety — is the second most valuable color of jade after the prized imperial green. It is highly valued in Asian cultures, particularly in Myanmar and China, and has been carved into art objects and ornaments for thousands of years. Only jadeite (not nephrite) naturally produces a purple color. The finest lavender jade displays an even, consistent color and strong translucency. Jade’s toughness (not to be confused with hardness) is among the highest of any gemstone, making it remarkably resistant to chipping and breaking despite its moderate hardness.

 

Purple Gemstone Meanings & Symbolism

Purple has been the color of royalty, spirituality, and wisdom across virtually every major civilization. In ancient Rome and Byzantium, only emperors were permitted to wear Tyrian purple — a dye so difficult to produce that it was worth more than gold. Purple gemstones carried that same symbolic weight.

Today, purple gems are broadly associated with:

• Wisdom and mental clarity — the third-eye chakra in metaphysical traditions corresponds to violet-blue gems like amethyst and iolite, associated with intuition, self-expression, and insight.
• Spirituality and consciousness — the crown chakra is linked to the deepest purples, representing connection to higher consciousness.
• Royalty, luxury, and power — a cultural association stretching back thousands of years across Greek, Roman, and Asian civilizations.
• Calm, protection, and healing — amethyst in particular has been associated with sobriety, calmness, and protection since ancient times.
• Love and passion — purple gems like kunzite and rhodolite garnet are associated with emotional openness and romantic energy.

 

Purple Gemstone Birthstones & Anniversary Gifts

Amethyst is the official birthstone for February, making it an ideal gift for those born in that month. It symbolizes personal empowerment, calmness, and inner strength. Tanzanite is one of December’s modern birthstones alongside turquoise and blue zircon. Alexandrite is June’s birthstone and is associated with good luck, love, and creativity.

For anniversaries, amethyst is the traditional gift for the 6th wedding anniversary, symbolizing love, happiness, and fidelity. Purple jade and purple garnet are also meaningful anniversary stones. For milestone anniversaries requiring something more extravagant, a fine tanzanite or purple sapphire makes an unforgettable gift.

 

How to Buy Purple Gemstones: A Practical Buying Guide

 

1. Understand Color Quality

Color is the single most important factor in pricing any colored gemstone. For purple gems, look for:

• Vivid, well-saturated color — neither washed out nor so dark it appears black.
• Even distribution — color should be consistent across the stone, without patches or zones of dramatically different intensity.
• The right hue for the gem — a fine amethyst should be a pure reddish-violet; a fine tanzanite should show a rich blue-violet; a fine purple sapphire should be clean and vivid without brownish undertones.

 

2. Consider Durability for Your Intended Use

Hardness on the Mohs scale indicates scratch resistance, but toughness (resistance to chipping and breaking) is equally important. For rings worn daily:

• Best choice: Purple sapphire (Mohs 9, excellent toughness) or alexandrite (Mohs 8.5).
• Good choice: Purple spinel (Mohs 8).
• Occasional wear only: Tanzanite (perfect cleavage, chips under impact), kunzite (fragile cleavage), charoite, iolite.
• Display and non-ring jewelry only: Lepidolite, fluorite, charoite.

 

3. Ask About Treatments

Most commercial purple gemstones have been treated in some way. This is normal and acceptable — provided you know what you are buying:

• Tanzanite: Almost universally heat-treated (standard and accepted).
• Amethyst and purple sapphire: Often heat-treated (standard).
• Lavender jadeite: May be polymer-impregnated (ask for documentation).
• Purple spinel, rhodolite garnet, iolite, charoite, sugilite, fluorite, lepidolite: Usually untreated.

Untreated stones with lab certification command premiums of 30–200% over treated equivalents. For investment-grade buying, always request a gemological certificate from a recognized lab (GIA, AGL, or Gübelin).

 

4. Choose the Right Setting

The setting should protect the stone based on its durability. Harder stones like sapphire can handle high-prong solitaire settings. Softer or more fragile gems like kunzite, tanzanite, and fluorite are much better protected in bezel settings that wrap around the stone’s girdle. Charoite and fluorite are best in protected settings for earrings and pendants where they will not be knocked about.

 

5. Lab-Grown vs. Natural

Lab-grown versions of purple sapphire, alexandrite, and amethyst are widely available and offer identical optical and physical properties at dramatically lower prices (typically 70–90% less for sapphire). If budget is a concern and you are not buying for investment or resale, lab-grown is an excellent practical choice. For tanzanite and the rarer stones like sugilite, charoite, and purple diamond, natural is the only meaningful option.

 

Caring for Your Purple Gemstone Jewelry

Proper care extends the life and brilliance of any purple gem. Here are the essential rules:

• Clean gently with warm water, mild soap, and a soft brush. Avoid ultrasonic cleaners for tanzanite, iolite, kunzite, fluorite, charoite, sugilite, and lepidolite.
• Store separately — harder gems like sapphire will scratch softer ones. Store each piece individually in a soft pouch or lined compartment.
• Protect from light — amethyst and kunzite can fade with prolonged exposure to direct sunlight or UV. Store in a dark drawer or lined box.
• Protect from heat — kunzite’s color is especially sensitive to heat. Avoid leaving it in hot cars or near heat sources.
• Avoid harsh chemicals — household cleaning products and chlorinated water can damage gem surfaces and settings. Remove jewelry before cleaning or swimming.
• Have settings inspected — have a jeweler check prongs and settings annually, especially for softer gems in ring settings.

 

Frequently Asked Questions About Purple Gemstones

 

What is the most valuable purple gemstone?

Purple diamonds are the most valuable purple gemstone by price per carat, ranging from $1,900 to over $25,000 per carat for high-quality stones. Natural alexandrite with strong color change is also extraordinarily expensive. Among more accessible gems, fine tanzanite and purple sapphire lead on value.

 

What is the rarest purple gemstone?

Purple diamonds are among the rarest colored stones on Earth. Tanzanite is also extremely rare because it comes from a single small deposit in Tanzania. Sugilite, alexandrite, and gem-quality charoite are also considered very rare. Fine alexandrite with strong color change from Russia’s Ural Mountains is exceptionally scarce.

 

What is the best purple gemstone for an engagement ring?

Purple sapphire is the best choice for a daily-wear engagement ring — it has a Mohs hardness of 9, excellent toughness, and comes in beautiful lavender to plum shades. Purple spinel (Mohs 8) is an excellent second choice. Avoid tanzanite, kunzite, iolite, and charoite for engagement rings due to their lower durability.

 

Is amethyst a precious or semi-precious gemstone?

Amethyst is classified as a semi-precious gemstone. The traditional “precious” gemstones are diamonds, rubies, emeralds, and sapphires. However, this distinction is somewhat outdated — fine tanzanite, for example, can be more valuable per carat than lower-quality rubies or emeralds. In jewelry retail, the more useful categories are “fine gemstones” and “commercial gemstones.”

 

What purple gemstone is associated with royalty?

Amethyst has the longest association with royalty — it adorned the crowns, rings, and regalia of European monarchs for centuries. Purple sapphire and purple spinel also feature in historic royal jewelry. The broader association of purple with royalty stems from the extreme rarity and cost of Tyrian purple dye in the ancient world, which meant only the wealthiest rulers could afford purple garments.

 

Do all purple gemstones need treatment?

No. Purple spinel, rhodolite garnet, charoite, sugilite, iolite, lepidolite, fluorite, and most kunzite are sold untreated. Tanzanite is almost always heat-treated; amethyst and purple sapphire are frequently heat-treated. Always ask your jeweler to disclose any treatments and request a certificate for higher-value purchases.

 

Final Thoughts: Choosing Your Perfect Purple Gem

Purple gemstones offer something for every budget, lifestyle, and taste — from the affordable and widely available amethyst to the extraordinarily rare purple diamond. The key is matching the gem to your actual needs:

• For daily-wear durability: Purple sapphire or purple spinel.
• For a dramatic statement piece: Tanzanite or fine amethyst.
• For investment and rarity: Tanzanite, fine alexandrite, or purple diamond.
• For an affordable collector’s gem: Iolite, rhodolite garnet, or sugilite.
• For metaphysical and spiritual use: Amethyst, lepidolite, or charoite.

Whatever your reason for seeking a purple gemstone — the color of royalty, wisdom, and beauty — there is a violet, lavender, or deep plum gem that is the perfect match. Buy from reputable dealers, ask about treatments, and always choose the stone whose color speaks to you first.

 

This guide is intended for educational and informational purposes. Gemstone prices vary by market, treatment status, origin, and quality. Always consult a certified gemologist for high-value purchases.