Is Alexandrite rarer than diamond?

Yes, high-quality natural Alexandrite is rarer than diamonds, especially in sizes above 1 carat.

Why does Alexandrite change color?

The color change is caused by chromium in the crystal, which absorbs light differently in daylight vs incandescent light.

How much does Alexandrite cost?

Prices vary by size, origin, and color-change quality. Fine stones can start from USD 2,000 per carat and go much higher.

Where is Alexandrite found?

Major sources include Russia, Brazil, Sri Lanka, Madagascar, and parts of Africa.

August 22, 2025

Buy Natural Alexandrite Online – Certified & Rare | Bangkokgemsmarket

Discover the Magic of Color-Changing Alexandrite – From the World's Largest Collection

At Bangkokgemsmarket, located in the heart of Bangkok’s Jewelry Trade Center, we proudly offer one of the world’s largest collections of natural Alexandrite gemstones. These rare and mesmerizing gems change color from green in daylight to red under incandescent light, a phenomenon that makes Alexandrite one of the most valuable and mysterious stones in the world.

A Brief History

Alexandrite was first discovered in the Ural Mountains of Russia in the early 1830s. According to legend, it was found on the very day that the future Tsar Alexander II came of age, and so the stone was named in his honor. Its green and red hues also mirrored the colors of Imperial Russia’s military, making it a gemstone of great national pride.

The Unique Color-Change Phenomenon

The magic of Alexandrite lies in its rare optical property known as pleochroism, combined with trace elements of chromium within the crystal. These factors allow the gemstone to absorb light in a unique way, causing the dramatic shift in color between daylight and artificial light. This phenomenon is not only scientifically fascinating but also one of the main reasons why Alexandrite is highly prized by collectors and jewelry lovers worldwide.

Why is Alexandrite so Rare?

Alexandrite’s beauty is matched only by its extreme rarity. Unlike many gemstones that are found in multiple locations worldwide, Alexandrite forms only under very unusual geological conditions.

Geological Scarcity

For Alexandrite to exist, a perfect combination of elements must come together during crystal formation. The mineral chrysoberyl, which is the base of Alexandrite, must contain chromium—the same element that gives emeralds their vivid green color. However, the geological environment where chrysoberyl and chromium occur together is extremely rare. In most places, chromium-rich rocks lack the beryllium needed to form chrysoberyl, and vice versa.

This unique overlap of conditions makes Alexandrite incredibly scarce in nature. High quality stones with strong color change are even harder to find, which explains why Alexandrite often commands prices higher than diamonds when of fine quality.

Limited Sources Worldwide

The first deposits were discovered in the Ural Mountains of Russia in the 19th century, which produced some of the finest Alexandrites ever known. Over time, other deposits have been found in Brazil, Sri Lanka, India, Madagascar, and Africa, but the supply is still extremely limited compared to other colored gemstones.

Because of this geological rarity, genuine natural Alexandrite is considered a collector’s treasure and one of the most sought-after stones in the world.

Why Choose Alexandrite?

Rare & Valuable: Rarer than diamonds – especially in sizes above 1 carat.
Color-Change Magic: A unique dual personality – green by day, red by night.
Perfect for Collectors & Investors: Appreciates in value due to extreme scarcity.
Meaningful Gift: Symbolizes transformation, balance, and inner power.