Instead of wearing family heirlooms, society turned to semi-precious stones ... Even though onyx is one of the least expensive precious stones on this list, it still is valued quite high.

Semi-precious stones include tourmaline ... surrounded with bursts of onyx, circular-cut rubies, sapphires and diamonds. The necklace suspends a square-shaped ruby, joined by a similarly set ...

Should a top-grade tanzanite that is worth more than a diamond be considered a precious or semi-precious stone? And if a 1ct sapphire is the same price as a 5ct opal, which is a better buy?

With a variety of semi-precious stones such as amethyst, jade, and turquoise, the shop continues to serve both professional designers and hobbyists seeking high-quality materials. Semi-precious ...