Overall Dimension (including bail): 1.5 x 0.6 x 0.35 inches
Inner Bail Diameter: 4 mm
Weight: 6.1 grams
Serial Number: p30312
The relatively abundant mineral smoky quartz ranges in color from almost black to nearly colorless. Gem quality specimens are mined from the Swiss Alps and from Pike's Peak in Colorado. Dark smoky quartz is sometimes heat-treated to give it a lighter color which appears more brilliant when cut.