White CZ, Lab Moissanite or Natural Topaz Ring Edward Design#70 (10x12 version) Custom Made Here we have an Edwardian reproduction ring in sterling silver filigree with a 5ct white cubic zirconia (CZ) gemstone solitaire (also available is a 4.5ct to 5ct Natural White Topaz, or a 6ct D-color certified Lab Moissanite (see last picture in set for moissanite). The faceted oval gemstone gem is 12mm in length and 10mm in width. This ring also sits 7mm off the finger. The inside of the band is marked 9