Alexandrite
A variety of Chrysoberyl
What is Alexandrite?
Alexandrite is a rare variety of chrysoberyl discovered in Russia's Ural Mountains in the 1830s and named after Tsar Alexander II. This extraordinary gemstone exhibits a dramatic color change, appearing green in daylight but shifting to red or purplish-red under incandescent light - a phenomenon caused by chromium in its crystal structure. With a hardness of 8.5 on the Mohs scale, alexandrite is both durable and exceptionally valuable, with fine specimens often commanding prices higher than diamonds due to their extreme rarity and mesmerizing optical properties.
Uses & Applications
Alexandrite is one of the most valuable gemstones, prized for its dramatic color change. Used exclusively in high-end jewelry including rings, pendants, and earrings. Synthetic alexandrite is used in lasers.
Healing Properties
Believed to balance physical and emotional well-being, enhance self-esteem, and bring joy. Thought to aid in decision-making and help overcome fear. Associated with regeneration and renewal.
Optical Properties
- Refractive Index
- 1.746-1.755
- Pleochroism
- Strong
- Optical Character
- Uniaxial negative
- Dispersion
- 0.015
Discover Values
This stone excels in rarity, popularity, beauty, collection value.
Alexandrite Market Value Calculator
Estimate the market value of Alexandrite using size, quality, and finish. This preview calculator is for quick context and is not a formal appraisal.
Alexandrite Localities Map
See where Alexandrite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
The Meaning
Discovered in 1830 in Russia and named after Czar Alexander II. Considered a stone of good fortune and intellect. Believed to strengthen intuition and aid in creative endeavors. Modern birthstone for June.
Geochemistry
Forms in metamorphic rocks rich in beryllium and chromium under specific conditions. The presence of chromium creates the color-changing properties.
Associated Chakras
Quick Facts
Physical Properties
- Color
- Green, red, yellow, orange, purple (color-changing)
- Hardness (Mohs)
- 8.5
- Density
- 3.7-3.8 g/cm³
- Streak
- White
- Luster
- Vitreous
- Crystal System
- Orthorhombic
Chemical Properties
- Chemical Formula
- BeAl2O4
- Elements
- Be, Al, O
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