This is a very nice specimen consisting of white masses of the uncommon hydrated sodium and calcite borate hydroxide mineral PROBERTITE on all sides from the Boraxo Mine, Ryan, Furnace Creek Mining District, Inyo County California, USA. The specimen is 3.7 by 3.4 by 1.1 cms in size and comes with an old David Shannon Minerals label.

You may greatly reduce your per item shipping and handling costs by acquiring more specimens from my auctions because I consolidate shipping. Shipping and handling within the USA is by first class mail and is $5.50 for the first specimen plus an additional $0.75 for each additional specimen. For all other countries shipping is by Air Mail and is $18.00 for the first item plus an additional $3.00 for each additional item. When bidding on multiple items, always IGNORE the automatic invoices Ebay sends for single items and ask me for or wait for my invoice for all your items with consolidated shipping. It will save you money and save me packing time. Thank you.