emerald Shape Lab Grown Alexandrite Color Changing Stone DIY Ring Necklace Earrings Main Materials with Certificate Wholesale

Description High-concerned chemical: None Certificate: Yes Certificate Number: As Certificate Certificate Type: Third Party Appraisal Model Number: standard Metals Type: None Main Stone: Alexandrite Item Shape: Rectangle Cushion Shape Brand Name: CHAOPAIZHIWU Item Weight: about-(1.029-3.464)ct Origin: Mainland China Item Type: beads Item Height: standard Fine or Fashion: Fashion Color: Alexandrite Clarity: VVS1 Shape: emerald Cut Certificate: AGL Certificate Alexander is a special gemstone that has a color changing effect of light green in sunlight and red in light. People call it emerald in the daytime and ruby in the nighttime.   It is said that metamorphic stones were first discovered in 1830 at a emerald mining site in the Urals of Russia. Miners presented this gemstone with a color changing effect to the Russian Crown Prince Alexander II. On his 21st birthday, he set this newly discovered strange gemstone on his crown and named it "Alexandrite", meaning metamorphic stone.   The gemstones we sell are artificially cultivated in the laboratory, which are Alexander gemstones cultivated in simulated natural environments using the Czochralski method. The composition is aluminum oxide, and the hardness reaches 9. If you also like it, our gemstones are a good choice for you. If you have any questions, please contact customer service.