For diamond lovers, a great way out is zirconium stone in jewelry. This
Emerald is a beautiful and popular stone. In Russia it is sold at a price from
Thermal conductivity, heat capacity and thermal diffusivity of primary sediments and rocks The table presents the values of the thermal conductivity coefficient,
London topaz - physical properties According to the chemical composition, natural topaz is a fluorine-containing silicate
Silicon carbide (carborundum, SiC) is a synthetic material corresponding in composition and properties to the moissanite mineral.
How to remove gold plating from silver yourself? Gilding is a gold coating on a silver item.
She is so different History has honored bronze, giving it an entire era in the development of mankind. Bronze
Formula Al2O3 Color Blue and cyan in various shades; colorless, pink, orange, yellow, green, purple,
How to make a gateway for gold mining with your own hands This article was born in connection with
Standard of hardness Diamond, or, in scientific terms, the cubic allotropic form of carbon, is a material in
