4mm Natural Dark Blue Sapphire Round Cut
Ready for Jewellery Setting
County of Origin: Ceylon
Country of Manufacture: Thailand
Colour: Dark Blue
Width: approx 4mm
Total carat Weight: 1.80cts
Cut Grade: Excellent
Sapphire is a gemstone and a variety of the corrundum group Al2O3 (Aluminium Oxide), plus traces of the metallic oxides Fe (Iron), Ti (Titanium),
Cr (Chromium), which will govern the colour of the gem material.
Sapphire is the birthstone of September.
Sapphire is 9 on the Mohs scale of hardness.