Each of our diamonds and colored gemstones is individually selected for its beauty and value. We work with a small group of gem buyers who travel to all major cutting centers and mines to select quality stones that satisfy our criteria.

Diamonds: Opus' well cut diamonds range from D to H in color, VS1 to SI1 in clarity and are guaranteed-graded by GIA and EGL.

Colored Gems: Additionally, Opus carries the following assortment of outstanding, vibrant gems: Burmese and Thai rubies, Ceylon and Thai sapphires, Colombian and Brazilian emeralds, tanzanites, Brazilian and African tourmalines, Rhodolite garnets, aquamarines, chysoberyls, Australian black opals and Mexican fire opals, Burmese and Vietnamese spinels.