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involving toxic chemicals and dangerously high pressures and temperatures--however
This has a mix of sapphires
Also known as the Universal S
Here is a video on the topic by Justin K Prim
Ce/Nd YAG Cone Rough, Jumbo Gem Preforms hedron involving toxic chemicals and dangerouslyThese are lab created golden laser garnet aka Ce+Nd YAG (Yttrium Aluminum Garnet) facet rough. These pieces are off the ends of boules, and thus naturally have formed cones which should be good preforms for large stones. This is an unusual synthetic material, YAG doped with both Ce and Nd. While Nd YAG is one of the most classic laser materials and has been widely used for numerous applications since the 60s the formula has been tinkered with over the