Dims: 0.22x0.21x0.19" (5.66x5.30x4.88mm)
Wt: 1.80ct (0.36g)
Tschikapa, Kasai Province, Congo
This diamond cube is only slightly distorted, being ever so slightly rhombic, perhaps 10% flattened, and having a single small bump due to another diamond crystal intergrown with the cube. The color is nearly colorless, having only a hint of yellow, and the rough, multi-faceted surface hides any transparency - the diamond looks translucent. But when examined with a loupe and under a bright light, it appears that the crystal's interior may be largely transparent - not only do some sparkles pass through it, but a rainbow is visible at certain angles from light entering the far side of the crystal (I only see this with my loupe).