Azurite -Such a beautiful stone! - This oval cabochon seemed to call for rustic simplicity, so I made a frame of hammered copper and a few blue glass beads that look like they jumped right out of the stone itself. 
Antiqued, polished and sealed.  Antiqued, polished and sealed. Will not darken further or rub off on skin. No polishing needed.
Comes with an interesting faux-copper 24" curb chain with links of two lengths. 
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From Wikipedia:
Azurite is a soft, deep blue copper mineral produced by weathering of copper ore deposits. It is also known as Chessylite after the type locality at Chessy-les-Mines near Lyon, France.[2] The mineral, a carbonate, has been known since ancient times, and was mentioned in Pliny the Elder's Natural History under the Greek name kuanos (κυανός: "deep blue," root of English cyan) and the Latin name caeruleum.[4] The blue of azurite is exceptionally deep and clear, and for that reason the mineral has tended to be associated since antiquity with the deep blue color of low-humidity desert and winter skies.