Stone: Black Rutilated Quartz
Frame Material: 18K Gold Over Solid Genuine .925 Sterling Silver.
Shape: Faceted coin shape on both sides.
Measurement: 19mm long, stone is 14mm.
Weight: 2.0 grams per piece
These stones are known as hydrothermal quartz, which contains the same physical, chemical and optical properties of a natural stone. For further information and details regarding this process, see the AZ Findings Blog: http://www.azfindings.com/blog.