Rare Technibond Lab Created Tanzanite Gemstone Line Bracelet Size 7-1/4. Design Information: Bracelet features prong-set lab created tanzanite-color gemstone separate by clear pear-shape diamond accents. Measurements: Approx. 7-1/4 L x 1/2"W; Metal Type: Yellow Technibond; Metal Stamp: .925; Finish: Polished; Findings: Box Clasp; single safety clasp. Imported