UVAROVITE
Characteristics of the mineral.
Emerald green or bottle glass garnet, the bright green color of which is provided by an admixture of chromium. Large crystals are unknown and the mineral is used in products in the form of brushes and small druses. Silicate Ca3Cr2 [SiO4] 3, shades depends on the content of iron and titanium: dark green is possessed by uvarovite with a high content of iron, rusty and yellowish-green - with a high content of titanium. The herbaceous green color of uvarovite is due to the compounds of chromium, so uvarovite is a noble garnet (emerald is also colored with chromium).
Uvarovite crystals are usually very small, not more than 0.5-1 mm in diameter, uvarovity of 3 mm is unique. Larger crystals are very rare. Thus, crystals up to 1.5 cm in size are found in Finland. Shape of crystals: rhombododecahedrons. Usually crystals in the form of brushes are placed along the walls of cracks crossing the chromite ores. This one of the most beautiful pomegranates is named in honor of Count Sergei Uvarov, one of the presidents of the Russian Academy of Sciences (1818-1855). Uvarovite refers more to collectible than to jewelry minerals, but it is used for insertions like brushes. However, the rare faceted uvarovites resemble very small emeralds (if the crystal size allows it to be restricted). Appreciate Uvarovits usually on square centimeters. Uvarovite has a hardness of 6.5-7.5.
Uvarovit - one of the most beautiful garnets, is very rare. The location and color of uvarovite determined another name for it - the Ural emerald. At present, uvarovite is found in the USA (Oregon), Canada, Finland, Norway, South Africa. Insert the uvarovite mainly in the handicrafts. The small size of the crystals causes its use in the form of brushes and small crystals in brooches, rings, bracelets. Uvarovit sparkles and shines in the sun. This is the brightest of pomegranates.
Uvarovite - calcium-chrome garnet. There is a lot of chromium in it - it almost completely takes the place of aluminum. And it occurs directly in chromite ores. The cracks and leaks of the leaching are entirely lined with shining green lawns, lined with glowing sunrays of uvarovite. Krasiv uvarovite extraordinarily: the whole crust consists of small (up to 1-2 mm), but perfectly faceted crystals with perfectly smooth and therefore continuous, with the slightest twist of the glittering faces. It can not be cut - chalk. Its natural beauty and perfection of facets and forms does not need any cut.
Magic properties of stones.
Develop intuition and foresight. Uvarovit promotes the accumulation of material wealth, but since it is a stone of honor and duty, it is absolutely useless to the scoundrels of all stripes and categories, and even can be very angry with them and put such people in very complex and often materially difficult situations. He is the talisman of honest and faithful, loyal and brave, generous and generous people and only he opens his "green road". Uvarovit - a guard against fraud and adventurers, thieves and deceivers; The stone serves as a barrier against the evil eye, spoilage, etc. Uvarovit, like the demantoid, is an energetically powerful stone.
Large (up to 5 mm) crystals of uvarovite. Blue Point Claim, Tuolumnne County, California, USA.
Pseudomorphosis possible uvarovite (on gray chromite ores) for other types of pomegranate
The sample could be taken for green conyalcite - arsenic poison or demantoid
Poisonous and radioactive dangerous stones and minerals
** - poisonous stones and minerals (mandatory check in the chemical laboratory + explicit indication of toxicity).
** - radioactive stones and minerals (mandatory check on the standard dosimeter + ban on open sales in the case of radioactivity over 24 milli / g / h + additional measures of population protection).
All rare stones are subject to mandatory inspection at the standard dosimeter for the permissible level of radiation and in the chemical laboratory for the absence of poisonous and evaporating components that are dangerous to humans and the environment.
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