Round Genuine Blue Sapphire Cabochon Select Size:4.0mm This listing is for the

This listing is for the 15 mm diameter version

088 – Durston Steel Ring Mandrel

Economical alternative to traditional RTV materials—faster throughput with less downtime

cylinders can be filled at most welding supply stores

manual action suited to jewelers and metalsmiths who prefer a traditional feel

Round Genuine Blue Sapphire Cabochon Select Size:4.0mm This listing is for theSapphire is one of the most popular colored stones in the United States, prized for its extraordinary durability and suitability for everyday wear. Pure corundum the mineral from which sapphire is composed is actually colorless in its purest form, but trace elements of iron and titanium produce the rich blue color these stones are known for. Pure corundum is rare in nature, and it is these trace elements that account for the wide range of colors found