Azure Stone. lake Baikal in Siberia, in a vein accompanied ■with garnets, felfpar, and pyrites. Werner fufpe&s, *hat it occurs in rock maffes. The fragments we have an opportunity of examin- ln g are generally intermixed with iron pyrites, fel- fpar, and^quartz, i Geographic Situation. / Afia, it has been found in Perfia, Bucharia, China, Great Tartary, and Siberia. Mr Pennant, in his Outlines of the globe informs us that it is found in c °nfiderable quantities in the ifland of Hainan in the Ph* r ^ninefe Sea, from whence it is fent to Canton, where lt ls employed in china painting. In America, it is faid to have been found at Ata- ^ma in Chili. In Curope, it has been only found among the ruins Rome. Ufa. On account of its beautiful blue colour, and the n e poljlh it is capable of receiving, It is worked into ^rious articles of drtfs, as ring (tones, feal (tones, nu ffboxes, Sec.: it is alfo ufed for ornamenting al* ^ ars > in mofaic and florentine work lt is highly va- ned by painters, on account of the fine ultramine Ue colcur which is prepared from it. Obfervations,