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Ships within 48 hours · Estimated delivery Jul 25 - Jul 30
BGO-20 is 80% as dense as a chunk of lead
These are the two grits included in the kit
The rod measures 15
We have a special on 10mm stones with light chipping--they were shipped without appropriate padding
Rutile has by far the highest dispersion of any gemstone worth the name which means it splits light into its component spectrum
Rough TGG Lab Garnet, Rare Magnetic Scientific Crystal Size:7-8g BGO-20 is 80% as denseThis is rough terbium gallium garnet aka TGG. Rough pieces are sorted by gram size, with representative photos of crystals on a 1 mm grid. TGG is a very cool synthetic material. It has the same structure as a natural garnet, but has a composition that would never be possible in nature. The result is a bright and very dispersive gem with optical properties similar to diamond (cubic crystal structure with a lower RI but the same dispersion as diamond),