Sapphire is a variety of the corundum mineral family, it is a bluish gem, Sapphire is as important as diamonds, rubies, and emeralds. Sapphire is a really resistant mineral, its hardness is one place below that of diamond. This stone is so hard that the Egyptians and Romans used it to make engravings on stones. In jewelry, Sapphire is a highly appreciated stone. (Zafiro coral rojo) This collection of natural, untreated sapphires from Burma together with some branches of red coral from the Mediterranean of Corsica make this lot a very special, select and unique collection (glass jar included in the lot) Sapphire elevates the spirit and allows the body to restore its balance. Sapphire also strengthens security and self-esteem. The photos were taken with white light, the measurements are approximate, we include a photo with a caliper where you can see the most exact measurements, (5 x 3 x3 cm)