Oval Faceted Weak Color change $89.00 59.65 Ct Excellent Color-Change Alexandrite AAA+ Quality Fancy Cut AGSL Gemstone Alexandrite’s refractive index is somewhere between 1.741-1.760, corundum’s is between 1.759 and 1.778. It is a very costly process, so this type of synthetic alexandrite is still very expensive. Gems from areas in Brazil exhibit better color changes than stones from other areas and are in most demand, but their colors differ somewhat from the Russian gems.Consider obtaining a gem report to reveal a stone's true origins before spending a large amount of money on alexandrite that's advertised as natural.Alexandrite has been used for crystal healing since its discovery. Alexandrite is Beryllium Aluminium Oxide (BeO Al2 O3). The gem is also sometimes regarded as the gift associated with a 45th wedding anniversary.Because it is durable, alexandrite can be cleaned in ultrasonic cleaners, or in soapy water. This blue to purple color change more likely indicates a hydrothermal lab-grown alexandrite. The stone is said to dispel negative energy and absorb positive vibes from our surroundings.Illustration: The Spruce / Madelyn GoodnightThis rare and expensive gemstone is hard to find in your everyday jewelry store, despite being named the official birthstone of June. Red and green were Imperial Russia's national colors, increasing demand for the gemstone and eventually depleting the supply found in the Urals. Less desirable alexandrite found today may be translucent or opaque. Its hardness on Mohs scale is 8.5. Curved striations visible with magnification are a give-away. Synthetic alexandrite is an artificially-grown crystaline variety of chrysoberyl, composed of beryllium aluminum oxide (BeAl2O4). This has not been reported in natural alexandrite. The more predominant the color change, the more valuable. The name chrysoberyl is derived from the Greek words χρυσός chrysos and βήρυλλος beryllos, meaning "a gold-white spar". It isn't unusual for large stones to sell for more than a comparably sized natural emerald or ruby.Alexandrite and pearl are both traditional birthstones for the month of June. You can clean them mechanically, per the instructions of the system used. They have “tadpole” inclusions (with long tails) and spherical bubbles. Seiko synthetic alexandrites show a swirled internal structure characteristic of the floating zone method of synthesis. Despite the similarity of their names, chrysoberyl and beryl are two completely different gemstones, although they both contain beryllium. Alexandrite Gemstone is a rare variety of the mineral Chrysoberyl & is a strongly pleochroic gem.
The stone has the same physical and chemical properties as a natural alexandrite. It was just made in a lab, not inside the Earth. The second aspect of color is how close the stone is to true green and red. The mineral or gemstone chrysoberyl is an aluminate of beryllium with the formula BeAl2O4. The eye was broad and of moderate intensity.
Overall, the gemstone is believed to bring good fortune to its owner and help enhance self-esteem. The closer the stone is to true red and green and the more dramatic the change, the more valuable the stone.Size is another important factor since alexandrite stones in larger karat sizes are extremely rare, making them more in demand. Some pulled stones have been seen to change color from blue to red – similar to natural alexandrite from Brazil, Madagascar, and India. But it's important to note that many of the newly found gems are not as vividly colored as the Russian gemstones and do not change color as dramatically. First, you must consider how dramatic the color change effect is. Color-changing alexandrite is nature’s magic trick. The eye was slightly greenish-bluish-white and the stones were dull and oily. Alexandrite Lab Created Chrysoberyl 7x9 MM. Evaluating an alexandrite's color is two-fold. Other times, alexandrite simulants are made of glass, doped glass, plastic, and other compounds. It’s a real alexandrite, but it’s synthetic.