Blue Tiger Eye, also known as Hawk’s Eye has a striking optical effect when the stone is rolled from side to side. This material comes from South Africa. It is set in sterling silver with a partial open back behind the stone. The large bail in the back has an inner diameter of 7 mm. Total length – 73.10 mm x 31.27 mm wide. Weight – 31 grams. Lapidary work – John DeLong.