This listing is for a single one troy ounce ingot of rhenium.  Rhenium was discovered in Germany in 1925, was the last stable element to be discovered, and is named after the Rhine River.  It is among the most rare elements in the earths crust with an estimated concentration of 1 part per billion.  In 2012 only 52 tonnes of rhenium was mined worldwide compared to 2700 tonnes of gold and 1,100,000,000 tonnes of iron.  Rhenium has the highest boiling point of all elements, the second highest melting point of all metals and is among the most dense. It's annealed form is very ductile and its alloys can be superconductive. These unique properties have applications in the aerospace, electronics and energy industries.  Please see the below links for more infomation.  Inscribed on our ingots are the chemical symbol (Re), purity (99.99%), weight (one troy ounce), and a serial number (this number is unique and will vary).  On the reverse is our logo.  These ingots are nicely polished though not all are as well polished as the single one pictured.  See the group pictures for respresentative ingots from this batch.  Each ingot will be shipped with an assay certificate and with a velvet bag for storage.  If multiples are purchased, one velvet bag will be included for every two ingots purchased.  We will combine multiple orders for a shipping discount (please wait to pay if you have purchased more than one and we will send you an invoice reflecting the shipping discount).  All of our precious metal shipments will be sent insured and with signature confirmation which are already included in the shipping cost.  If you are not completely satisfied with any purchase from us, you have 30 days to return it.  Please visit our ebay store to see our other metals at http://stores.shop.ebay.com/Rare-World-Metals-Mint

 

http://en.wikipedia.org/wiki/Rhenium

http://en.wikipedia.org/wiki/Abundance_of_elements_in_Earth%27s_crust

http://www.swissmetalassets.com/tag/rhenium

http://www.curiousnotions.com/home/metals.asp

http://www.roskill.com/reports/minor-and-light-metals/rhenium/?searchterm=rhenium

http://www.bgs.ac.uk/mineralsuk/statistics/riskList.html