HERE'S AN ALL NATURAL , DESIGNER SHAPED , ( 42 x 35 x 8 mm. ) MOOKAITE GEMSTONE FROM AUSTRALIA THAT WILL BE MADE INTO A BEAUTIFUL NECKLACE BY HANDCRAFTING A HOOK CLASP ON A RED BRICK LEATHER CORD WITH YOUR CHOICE OF EITHER 14-KT. ROLLED GOLD OR .925 ( ARGENTIUM ) STERLING SILVER. THIS MOOKAITE WEIGHS 90 CARATS AND HAS A MOHS HARDNESS OF 6-7 .