The issue of large denomination gold coins was of particular importance for the sovereigns of Russia. From XV to
Deposits of sapphirine For sapphirine, only a few large deposits and the entire stone are known
Description and history of fire stone Fire agate is formed when lava cools through the fusion of silicas.
Share with your friends! All over the world we find massive crafted stones. Which sometimes weigh
Mudstone is a type of hardened clay. The influence of the surrounding world made this rock a stone, not
Herbaceous gems have a long history. Man isolated them from a number of other minerals, associating green
Many scientists have sought to grow artificial diamonds ever since the theory arose that
Blue sapphire with a formula that in chemistry denotes any corundum has all the characteristics of these
Type of stone Precious, semi-precious Prevalence (Deposits) India, Kazakhstan, Canada, Russia, USA, Thailand Varieties Leucosapphire,
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