Color: Blue
Shape: Oval
Size: 18X25mm
Clarity - AAAAA+
Hardness: 9.0
Density: 3.98
Refractive index: 1.76
Dispersion: 0.018
Melting point: 1700°C—3100°C
Pendant size: 925 sterling silver (Main Stone :18X25mm) Give nice gift boxes
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(Note: chain without necklace)