Hammered Sterling silver genuine Black Spinel and Mobe Blister Pearl.
Black Spinels are:10 mm
The Blister Mobe is approximately 22 x 16 mm some may vary.
Black spinel stone is a rare gemstone made up of hard vitreous magnesium aluminium oxide or magnesium aluminate. Specifically, black spinel is one of the rarest minerals that comes from the Spinel family and is a true gemstone often confused with black tourmaline.