Alexandrite

Alexandrite is a special variety of chrysoberyl that owes its remarkable color-change ability to trace amounts of chromium (Cr³⁺) within its crystal structure. Chromium absorbs light in a very particular way — it simultaneously absorbs wavelengths in the middle of the visible spectrum, causing the stone to appear dramatically different depending on the light source: - In daylight (rich in blue-green wavelengths): the stone appears green to blue-green - Under incandescent or candlelight (rich in red wavelengths): the stone shifts to red or purplish-red This phenomenon is known as the Alexandrite effect in gemology, and alexandrite displays the strongest color-change of any known gemstone.

Both share identical chemical composition and crystal structure — the difference lies in origin and price. Natural alexandrite is extraordinarily rare, found primarily in Russia's Ural Mountains, Sri Lanka, and Brazil. Fine specimens above one carat are exceptionally scarce and command premium prices. Lab-grown alexandrite replicates the natural growth process under controlled conditions, producing stones with the same optical properties and color-change effect at a far more accessible price point. For most buyers, lab-grown alexandrite offers an excellent balance of beauty and value — the full alexandrite experience without the rarity premium.

Genuine alexandrite — whether natural or lab-grown — has a few verifiable characteristics: Color-change test - Observe the stone under daylight or daylight-equivalent lighting, then switch to a warm incandescent bulb. A genuine alexandrite will show a clear, dramatic color shift. The stronger the contrast, the higher the quality. Pleochroism test - Hold the stone up to a backlit screen and slowly rotate it 90°. True alexandrite exhibits pleochroism — a subtle color variation as the viewing angle changes. Most glass imitations do not. Hardness reference - Alexandrite has a Mohs hardness of 8.5. Glass imitations are significantly softer and more prone to scratching.

Yes — alexandrite is one of the more durable gemstones available: - Mohs hardness of 8.5, harder than most colored gemstones and highly suitable for everyday wear. - Good toughness, making it resistant to chipping or cracking under normal conditions - Suitable for rings, pendants, and other jewelry worn regularly Care tips - Avoid direct contact with harder materials such as diamond jewelry - Remove when doing heavy manual work or sports - Clean periodically with a mild solution and a soft brush

In order of importance: ① Color-change intensity This is the single most important factor. The best stones show a vivid, saturated green in daylight and a rich, pure red under incandescent light. Top-quality alexandrite can achieve a color-change rate above 80%. ② Color saturation Both the green and red tones should be clean and vibrant. Stones with vivid, saturated colors are generally considered more desirable than those with muted or greyish tones. ③ Clarity Natural alexandrite typically contains inclusions — an eye-clean stone is already exceptional. Lab-grown stones generally have higher clarity. ④ Carat weight For natural alexandrite, price increases sharply above 1 carat. For lab-grown stones, size has a comparatively smaller impact on price. ⑤ Cut A well-proportioned cut maximizes the color-change effect and brilliance. Look for balanced symmetry and a high polish finish.

Yes. We offer customization options that allow you to create a ring tailored to your personal style and preferences. Choose your preferred setting style, metal, and stone size, and we will build the ring around an alexandrite selected to match your vision. If you have a preference for a lighter or deeper color tone, we can accommodate requests from our current inventory. Contact us at support@felicegals.com before placing your order and our team will walk you through the options and share reference photos of available stones.