A ( 46 X 35 X 7 mm. ) ALL NATURAL HEART SHAPED AUTUMN LEAF JASPER GEMSTONE FROM SOUTH AFRICA THAT WILL BE MADE INTO A BEAUTIFUL NECKLACE BY HANDCRAFTING A HOOK CLASP ON A TURKEY RED COLORED LEATHER CORD WITH YOUR CHOICE OF EITHER 14-KT. ROLLED GOLD OR .925 ( ARGENTIUM ) STERLING SILVER. THIS GEMSTONE WEIGHS 100 CARATS AND HAS A MOHS HARDNESS OF 6.5 .