Sterling silver ring with two-tone quartz

 Sterling silver, Silver 925, Smoky quartz with yellow quartz inclusions 
 Size: 20 / US 10 1/4 
 Weight: 24.22g 
 Stone: Quartz 13x27mm, height 13mm 
 Ring width 11mm 
 
 Quartz - one of the most common minerals. It belongs to most rocks - igneous, metamorphic and sedimentary. Quartz is resistant to decay (rock breakage), so the sand mainly consists of quartz grains, because other less durable minerals are degraded. 
 In Latvia, quartz is very common as a component of glacial rocks. An attentive and patient searcher can also find tiny quartz crystals formed in small voids in the granite.