Robert mines for clear, White Quartz crystals at several locations here in Colorado.  The crystal used in this piece was found near Lake George.  We faceted it into this 6.4 carat round gemstone measuring 12.5mm across (about 1/2").  Robert then set the gem in a Sterling Silver Pendant.  
 
For this Pendant, we recommend an 18” or 20” Light Rope Sterling Silver Chain, #1120.