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but these glass laser rods are an exception
specifically Bi3Ge4O12 aka evlitine) is valued as an optical substrate because of its highly unusual electrooptical properties
no durability issues and good optical properties which make it sparkle brilliantly
and on a black background it sometimes takes on a green cast
BGO12 Bismuth Germanate Facet Rough Marked Letter:1pc 6-7g but these glass laser rodsThese are BGO 12 aka Bismuth Germanate facet rough. This is a real cool rarity in the gem world. Bismuth Germanate (in this case, specifically Bi3Ge4O12 aka evlitine) is valued as an optical substrate because of its highly unusual electrooptical properties. It has exceptionally good optical properties too, with (as far as we can tell the literature is weak) an RI of 2. 15 and dispersion of 0. 1. Cut stones are incredibly beautiful with high brilliance
US$ 16.99
US$ 34.95
US$ 32.00
