: Rough diamonds often look like irregular, opaque, dull stones with a glassy surface, sometimes showing a classic eight-sided octahedral crystal structure.

Rough diamonds are traditionally sold through highly controlled systems, though options for smaller buyers are expanding. Rough Diamonds | Diamond Commodity Chain - U.OSU

: Buyers can work with a cutter to choose a specific shape—like a pear, oval, or round—that best suits the raw stone's properties .

: Many modern buyers prefer the natural, unrefined look of rough stones for jewelry, valuing their raw beauty and unique character . 2. Identifying Quality in the Rough

: Rough diamonds are generally cheaper than polished ones because they haven't yet accrued the significant labor costs associated with the extensive and tedious faceting process .

Unlike polished diamonds, which are graded by the (Cut, Color, Clarity, Carat), rough diamonds require a trained eye to assess "potential" quality.