Much fine amethyst comes from Russia, especially from near Mursinka in the Ekaterinburg district, where it occurs in drusy cavities in granitic rocks.
Chelyabinsk was linked by a transverse line with the middle Urals railway, which connects Perm, the head of navigation in the Volga basin, with Tyumen, the head of navigation on the Ob and Irtysh, passing through Ekaterinburg and other mining centres of the middle Urals.
In 1875 via Ekaterinburg and Omsk.
The Ekaterinburg stone-polishing works in the Urals and those of Kolyvan in the Altai are well known.
It starts from Perm on the Kama, and, crossing the Urals, reaches Ekaterinburg - the centre of mining industry - and Tyumen on the Tura, whence steamers ply via Tobolsk to Tomsk.
Used to strike off from the Kama eastwards, and Ekaterinburg, on the eastern slope of the Urals.
Returning westwards, Chelyabinsk has been connected with Ekaterinburg (153 m.); and a branch line has been built from the main Siberian line to Tomsk (54 m.).
Humboldt searched for them in the Urals on account of the similarity of the gold and platinum deposits to those of Brazil, and small diamonds were ultimately found (1829) in the gold washings of Bissersk, and later at Ekaterinburg and other spots in the Urals.