Egyptian Turquoise Cabochon/35 spiderweb Cab Cabochon stone186 Carats/beads Lot. Egyptian Turquoise from Sinai. 35 Cab Cabochon stone/ beads Lot. Largest : L 19mm X W 13mm X H 5mm. Smallest: L 12mm X W 9mm X H 3mm. Total weight 186 carat. These stones are from Sinai: Egypt. Sinai is called (The Land of Turquoise) cause Turquoise was mined there since 7000 years ago by the ancient Egyptians. It’s also called (The Sacred Land) as. Sinai is the traditional site where Moses received the Ten Commandments from God.