Gemstones are one of nature's most beautiful mysteries. Each stone has a unique story, from the Diamond, which is often older than the stars, to the Peridot, which has been found in stardust from ...
Rocks have not changed in 90 years, and neither have the type of people who would join the San Francisco Gem & Mineral Society, which started in 1935 for the hobby of rock cutting and polishing and ...