The more intense the color of a stone, while maintaining clarity and brilliance, the better it is. The beauty and brilliance of a colored stone relies on its being clean, especially the back of the stone. Come to Jan David today where we will clean and inspect your stones as a complementary service to you.

Collector's and connoisseur's gemstones are, generally speaking, the rarest available. They may be extraordinarily large for their species, the premier color or, simply that they exist is miracle enough. Any fine quality gem will have a good polish resulting in a high luster. A fine quality gem displays a bright, smooth (no pits) shining finish. The ability to polish a stone is directly related to the stone's density and hardness, the more porous/soft the stone, the poorer the polish.