7.51 ct. Cassiterite
Color: Light Brown
Clarity: Eye Clean to Slightly Included
Origin: China
Cut: Oval Brilliant
Treatments: None
Measurements: 10.4 x 8.7 mm
Faceted Cassiterite has always been an appealing member of the collector class of gemstones. It is a tin mineral that is rare in gem quality, but when cut is quite impressive - it has both a high refractive index and an adamantine luster. These are quite dispersive as well - when nice, they are really lovely stones. We were extremely impressed by this very fine example of the species - great size and beautifully cut; a quality we rarely see. Moreover, the gem has a scarce very light tone which allows for a nice level of visible dispersion - these can be overly dark for sure. Larger stones such as this are often quite color-zoned as well - not an issue with this collection size stone. One of the few rarities with a respectable hardness (7 on the Moh's scale) as well. Rare as such.