Ametrine: Meaning, Properties, Value & Care

TOC

• 1. What Is Ametrine?
• 2. Ametrine History and Meaning
• 3. Ametrine Physical and Chemical Properties
• 4. Natural vs Synthetic and Treated Ametrine
• 5. Ametrine Value and Price
• 6. Ametrine Meaning and Symbolism
• 7. Ametrine Birthstone and Zodiac Associations
• 8. How to Care for Ametrine
• 9. Ametrine FAQ
• 9-1. What is ametrine?
• 9-2. Where does ametrine come from?
• 9-3. Is ametrine natural or man-made?
• 9-4. Is ametrine valuable?
• 9-5. How hard is ametrine?
• 9-6. Is ametrine a birthstone?
• 9-7. Can ametrine fade?
• 9-8. How do I care for ametrine?
• 10. Buying Ametrine from KenKenGems

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Ametrine

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What Is Ametrine?

Ametrine is a bicolor variety of quartz that combines amethyst (purple) and citrine (yellow-orange) in the same stone — its name literally merges "ame-" (amethyst) and "-trine" (citrine). The two colors come from iron in different oxidation states across the crystal's growth zones. With a Mohs hardness of 7, it is durable enough for everyday jewelry, and clever faceting is used to show off its warm-and-cool split. It is prized as an affordable, distinctive gem, sometimes called "bolivianite" after its homeland.

Ametrine History and Meaning

Ametrine's modern story centers on Bolivia. A romantic legend tells of the 17th-century Spanish conquistador Felipe de Urriola y Goitia, who received a bicolor stone from a Bolivian princess and later gave it to the Queen of Spain — a charming tale rather than documented history. What is well established is that gem ametrine comes almost entirely from the Anahí Mine in eastern Bolivia; long scarce on the world market, it became widely available only after Bolivian export opened up in the 1980s. Because of that origin, ametrine is also known as "bolivianite." As a symbol, its united purple and gold have long been read as a meeting of two energies — calm and vitality — in one stone.

Ametrine Physical and Chemical Properties

Ametrine is macrocrystalline quartz (silicon dioxide, SiO2) that owes its two colors to iron: differing temperatures and oxidation states across the crystal's growth zones create alternating amethyst-purple and citrine-yellow sectors. Well-formed crystals can show several color sectors that meet in sharp boundaries. It also shows subtle pleochroism, appearing to shift slightly as you view it from different angles. At Mohs 7, ametrine is hard and durable, easy to facet, and usually cut to balance and display both colors — often in fancy or custom cuts that split or checkerboard the purple and gold.

Natural vs Synthetic and Treated Ametrine

Most ametrine on the market is natural, mined at the Anahí Mine, but synthetic and treated material exists and must be disclosed. Lab-grown (hydrothermal) ametrine is produced and can look very clean and evenly colored; some bicolor quartz is also created by heat-treating or irradiating amethyst so that part of it turns to citrine. Under the FTC Jewelry Guides, synthetic origin and treatments should be stated. Natural Anahí ametrine typically shows a crisp, straight color boundary and slight natural color variation, while overly perfect, vivid stones at very low prices may be synthetic. When buying, ask whether a stone is natural, lab-created, or treated.

Ametrine Value and Price

Ametrine is beautiful yet affordable, with value driven by how well the two colors are balanced and displayed, plus clarity, cut, and size. Stones showing roughly equal, saturated purple and gold with a clean, sharp boundary command the highest prices; those leaning heavily to one color, or looking dull or included, are more budget-friendly. As a rough guide, small commercial stones can be found for under USD $10 (about CAD $14) per carat, while larger, well-cut, evenly bicolor gems and custom "fantasy" cuts run higher. Fancy and custom cutting adds value because it is what best reveals ametrine's split color. Treat any figure as general guidance rather than a fixed quote.

Ametrine Meaning and Symbolism

In crystal tradition, ametrine is regarded as a stone of balance and harmony, because it unites the calm of amethyst with the warmth of citrine in one gem. It is important to be clear that these are cultural and folkloric beliefs, not medical facts: ametrine is not a medicine and does not diagnose, treat, cure, or prevent any physical or mental condition, and it is no substitute for professional care.

• Traditionally associated with balance, harmony, and reconciling opposites
• In crystal lore, linked with clarity of thought and creativity
• Long tied to peace-making in folklore (a symbolic "meeting of two energies")
• Chosen by many simply as a striking, uplifting two-color gem

These are traditional beliefs, not medical claims.

Ametrine Birthstone and Zodiac Associations

Ametrine is not an official birthstone, but because it combines amethyst and citrine it is often linked with both February (amethyst) and November (citrine) as a birthday-gift stone. In astrological folklore it is associated with signs such as Leo, Aries, and Sagittarius. These are traditional, cultural associations rather than rules — anyone can wear and enjoy ametrine regardless of birth month or sign.

How to Care for Ametrine

Ametrine is durable (Mohs 7) and easy to care for, with a couple of sensible cautions.

• Clean with warm water, mild soap, and a soft brush
• Avoid prolonged direct sunlight and sudden high heat, which can fade the amethyst (purple) portion over time
• Ultrasonic cleaners are usually safe for clean, untreated stones, but avoid them for heavily included pieces
• Store separately from harder gems (like sapphire and diamond) to prevent scratches

Ametrine FAQ

Quick answers to the questions people most often ask about ametrine.

What is ametrine?

Ametrine is a natural two-tone quartz that combines amethyst (purple) and citrine (yellow) in one crystal. Its name merges "ame-" (amethyst) and "-trine" (citrine).

Where does ametrine come from?

Almost all gem ametrine comes from the Anahí Mine in eastern Bolivia, which is why it is sometimes called "bolivianite."

Is ametrine natural or man-made?

Most is natural, but synthetic (lab-grown) ametrine and heat-/irradiation-treated bicolor quartz also exist and must be disclosed. Natural stones usually show a crisp color boundary and slight natural variation.

Is ametrine valuable?

It is affordable. Value rises with a balanced, saturated 50/50 split of purple and gold, good clarity, and skillful cutting; larger, evenly bicolor stones cost more.

How hard is ametrine?

It is 7 on the Mohs scale — the same as other quartz — so it is durable enough for everyday jewelry, though it can still chip on a sharp knock.

Is ametrine a birthstone?

It is not an official birthstone, but as a blend of amethyst and citrine it is often associated with February and November as a gift stone.

Can ametrine fade?

Prolonged direct sunlight or strong heat can fade the amethyst (purple) part over time, so avoid long sun exposure.

How do I care for ametrine?

Clean with warm soapy water and a soft brush, keep it out of prolonged sunlight and sudden heat, and store it away from harder gems.

Buying Ametrine from KenKenGems

When buying ametrine, look for a pleasing balance of purple and gold, good clarity, and a cut that shows both colors, and confirm whether a stone is natural or lab-created. KenKenGems sources ametrine from reputable Bolivian suppliers and offers cabochons, faceted and fancy-cut stones, strands, pendants in silver settings, and loose stones in a range of shapes and sizes, described accurately so you know what you are buying.

Wide variety of our Ametrine collection