A ( 48 X 48 X 8 mm. ) COIN SHAPED, ALL NATURAL , MULTI-COLOR PICASSO GEMSTONE THAT WILL BE MADE INTO A BEAUTIFUL NECKLACE BY HANDCRAFTING A HOOK CLASP ON A LIGHT BROWN LEATHER CORD WITH YOUR CHOICE OF EITHER 14-KT. ROLLED GOLD OR .925 ( ARGENTIUM ) STERLING SILVER. THIS GEMSTONE WEIGHS 175 CARATS AND HAS A MOHS HARDNESS OF 6 .