An oval turquoise doublet is stunning with a rock crystal quartz top and turquoise bottom. Page 1 An oval turquoise doublet is stunning with a rock crystal quartz top and turquoise bottom. Diamonique simulated diamonds add to the sparkle of this magnificent ring. From Judith Ripka. Sterling silver Gemstone weight is not given for doublet Total Diamonique(R) simulated diamond weight is approximately 1.20 carats Oval turquoise doublet made of rock crystal quartz top and turquoise bottom in rope motif; prong-set, round Diamonique simulated diamonds in rope and berge motifs Sizes 5, 6, 7, 8, 9, 10, 11 Measures approximately 7/8"L x 1"W Imported Sterling silver Gemstone weight is not given for doublet Total Diamonique(R) simulated diamond weight is approximately 1.20 carats Oval turquoise doublet made of rock crystal quartz top and turquoise bottom in rope motif; prong-set, round Diamonique simulated diamonds in rope and berge motifs Sizes 5, 6, 7, 8, 9, 10, 11 Measures approximately 7/8"L x 1"W Imported