Frame Material: 18K Gold Plated Over Solid Genuine .925 Sterling Silver.
Shape: Faceted oval on both sides.
Measurement: 25mm long, 16mm wide. Stone is 14x18mm.
Weight: 2.7 grams per piece.
These stones are natural stones. For further information and details regarding this process, see the Beadunion Blog: http://www.beadunion.com/bezel-gemstone-information