Below you will find content on the site that is "tagged" with the topic: Onyx.
Fine Jewelry University
Gem in the Spotlight: Quartz
Quartz is one of the most common minerals on earth. Many of quartz’s gems are common for gemstones but, some varieties are very rare. Some are Plain Jane like rock quartz, others are exotic like Drusy Quartz. Some quartz material is a dollar per pound others are $1,000 per carat. Quartz is a gemstone with surprising variety... read more »