Ametrine
A variety of Quartz
What is Ametrine?
A naturally occurring variety of quartz, ametrine is a popular commercial mineral mined primarily in Bolivia and sold by the trade name of bolivianite. Prized for its gradient colors and toughness, it is regularly used in the jewelry industry. According to a legend, this mineral was first introduced in Europe in the 17th century, as a conquistador's gift to the Spanish queen.
Uses & Applications
Ametrine makes for a fascinating cut gemstone, although it has only become popular as a jewelry stone in the past few decades. This stone is so distinctive that new methods of cutting it have been developed to make the most of its two-color appeal as a faceted stone. It is used in settings for large gemstones such as drop earrings, pendants, and heavy rings.
Healing Properties
If your mind's filled with worry, ametrine may benefit you, as it's said to calm the mind by actively removing tension from the psyche. The belief is that this stone stabilizes emotions, allowing you to live a more peaceful internal life. Ametrine is said to improve physical health through boosting immune system and autonomic nervous system function.
Optical Properties
- Refractive Index
- 1.544-1.553
- Birefringence
- 0.009
- Pleochroism
- Weakly dichroic
- Optical Character
- Biaxial positive
- Dispersion
- 0.013
Discover Values
This stone excels in beauty, collection value.
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Ametrine before comparing listings or appraisals.
Size & Weight
Larger, intact specimens usually command higher prices.
Rarity & Demand
Scarce material or popular varieties sell at a premium.
Condition & Finish
Chips, repairs, and heavy wear lower value; clean prep helps.
Treatment & Provenance
Untreated specimens with documented locality are prized.
Ametrine Localities Map
See where Ametrine is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Associated Chakras
Key Characteristics
Composition of Ametrine
Silicon dioxide
Health & Safety Information
- ⚠️Ametrine in powdered form can be toxic due to its Crystalline Silica content.
- ⚠️Quartz, silica, crystalline silica and flint are non-toxic materials, but very fine dust containing quartz, known as respirable crystalline silicon (RCS), can cause serious and fatal lung disease. Lapidaries should exercise caution when cutting silica.
- ⚠️Ametrine is typically non-toxic unless it's in powder form. Long-term exposure to finely ground powder may lead to silicosis. Therefore, when cutting or polishing ametrine, be sure to wear a dust mask to avoid inhaling its dust.
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Quick Facts
Physical Properties
- Color
- Violet, yellow, purple, orange
- Hardness (Mohs)
- 7
- Density
- 2.62 - 2.72 g/cm³
- Streak
- White
- Luster
- Vitreous
- Crystal System
- Trigonal
Chemical Properties
- Chemical Formula
- SiO2
- Elements
- O, Si
Also Known As
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Ametrine FAQs
How do I identify Ametrine?
Ametrine can be identified by its hardness of 7 on the Mohs scale, Violet color, Vitreous luster, Trigonal crystal system. Look for these key characteristics when examining specimens.
What color is Ametrine?
Ametrine typically appears in Violet, yellow, purple, orange. Color can vary depending on impurities and formation conditions.
How hard is Ametrine?
Ametrine has a hardness of 7 on the Mohs scale. This makes it a relatively hard mineral suitable for jewelry.
What is the composition of ametrine of Ametrine?
Silicon dioxide
