Laser Alexandrite Facet Rough, Lab Created Alex Crystals egg as they will typically cut

as they will typically cut a little too aggressively when fresh

While the original Nd YAG lasers only added Nd it was soon discovered that Ce could act as a booster to its power by allowing it to absorb a wider range of wavelengths

They are tan out of the ground and have to be treated to get a darker background

Note these stones glow blue under shortwave UV because of titanium contamination

BGO20 has bizarre opto-electrical properties which make it incredibly useful in niche applications

Laser Alexandrite Facet Rough, Lab Created Alex Crystals egg as they will typically cutThese are genuine, lab created alexandrite facet rough, either sawn from the unusable parts of crystals grown for laser usage. This is a rarity in the gem world, synthetic alexandrite. Alexandrite is the color changing chromium bearing variety of chrysoberyl, and it has been a popular gem since the first natural deposits were discovered in Russia. Its high hardness (8. 5) and durability, combined with its incredible combination of colors, have made it