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In practice, in the trade of marine cultured pearls produced by mollusks of the species Pinctada maxima and Pinctada marga ...

The modern opal market is filled with a variety of stones and products made from them, and prices for these stones can var ...

Usually chalcedony is most often found in the form of an unattractive dull gray or almost colorless variety, however, ther ...

All deposits of fossilized fossilized resins are of exogenous origin, that is, are associated with factors of geological p ...

In Russian, the term “amber” is borrowed from Lithuanian from “gintãras” - the name of lithified resin fossils from the co ...

Publications

Ekanite is found in charoite rocks in the form of an accessory admixture of the smallest grains, but it causes an increased radioactivity of the ornamental stone, since it contains thorium as one of the mineral-forming elements - Ca2Th (Si8O20).

The mineral vadeite is found in charoitite as an accessory impurity.

Sticite is a mineral that occurs in charoitites as an accessory impurity, but is the reason for their rejection by the level of radioactive radiation due to the presence of thorium in its composition as one of the mineral-forming elements (K0.3 (Na, Ca) 2ThSi8O20).

The mineral is found in charoite rocks in the form of a rare accessory admixture, but it is a rock-forming material for the adjacent benstonite carbonatites, which are a promising source of barium and strontium.

The first mineral is aggrellite. The mineral found in charoitites as an accessory, but nevertheless, on an equal footing with other charoitite minerals, reflects the entire mineral wealth of this extraordinary rock.

Moscow Gemological Center
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Location MGC
Moscow 2nd Zvenigorodskaya St,
d. 13 p. 37, office 2 (1st floor)
Метро Ulitsa 1905 goda
Work mode:
Mon - Fri 10 am - 7 pm
Sat-Sun - weekend
Way from subway
Guest Parking
Available by appointment by  phone
  • The office is a 10-minute walk from the metro station Ulitsa 1905 goda. Exit to the city on Krasnopresnenskaya Zastava square (last carriage from the center), go through the underpass to the other side Zvenigorodskoe highway (to go to the end of the transition).
  • After exiting the underpass, immediately turn right and go straight at the Zvenigorod highway to the street Sergey Makeev.
  • Not crossing the intersection to turn left. To walk on the left side of the street to the brick building with the air conditioning on the facade (third house after the junction).
  • Go through gate and turn right, the entrance porch under a sign "the Moscow Gemological center".