This is a great material from Argentina - Phosphosiderite. This is the first time I've been able to source this in the rough as it is quite rare. It's found in Argentina and is a hardness of 3.5-4 and polishes beautifully. It's chemical formula is FePO4·2H2O. It typically has some voids or matrix material running around in it that can easily be worked around. The lilac/lavender color IS SIMPLY STUNNING! It's like nothing I've ever seen before. Take a look around ebay and see some finished pieces - you'll love it! Cabs sell by the carat, so this rough is very reasonably priced. OFFERED HERE WITH NO RESERVE!! This piece weighs 1.97 pounds. See photo. Buyer to pay $11.50 shipping/handling. COMBINE WINS TO SAVE ON SHIPPING!! See my other auctions for more cutting rough. Combine auctions to save on shipping. Email any ?? before bidding. Thanks for looking and !! PLEASE STAY TUNED TO ROCKMAN69 IN THE WEEKS (AND MONTHS) TO COME!! I HAVE TONS OF NEW (OLD) MATERIALS TO BRING TO EBAY SOON!