Jasper Jasper Jasper, an aggregate of microgranular quartz and/or chalcedony and other mineral phases, is an opaque, impure variety of silica, usually red, yellow, brown or green in color; and rarely blue. The common red color is due to iron(III) inclusions. The mineral aggregate breaks with a smooth surface and is used for ornamentation or as a gemstone. It can be highly polished and is used for items such as vases, seals, and snuff boxes. The specific gravity of jasper is typically 2.5 to 2.9. A green variety with red spots, known as heliotrope (bloodstone), is one of the traditional birthstones
Mineral waters of Azerbaijan Mineral waters of Azerbaijan Mineral water containing different minerals, salts, biological active elements is popular from ancient times for its healing factor. Due to contained gases mineral water may be effervescent or "sparkling". There are more than 1000 unlimited mineral water resources in the Republic of Azerbaijan. Most of them are widespread over mountainous regions of the Republic. Absheron peninsula is famous not only for its beaches. Containing iodine, bromine and other elements mineral waters of Absheron peninsula made it much more popular. There are many healing springs in Surakhani, Mardakan, Buzovna, Bilga, Pirshagi, Shikhov . Sanatoriums, rest homes were