Category Oxides (minerals) Name in English. Quartz Formula SiO2 Group Group of glass-forming oxides Color White,
Natural aquamarine: Depositphotos It is called the sea frozen in stone, and ancient legend says that
The mineral hardness scale or Mohs mineralogical scale is compiled from reference samples according to degree
The lack of awareness of the average person in the precious metals quotation system leaves room for scammers and unscrupulous sellers to
The Paris International Exhibition of 1925 introduced the world to advances in science and the decorative arts.
The stone of seafarers, capable of calming the storm; “Siberian heavyweight”, “imperial stone” - all this is about him,
Gold is a metal that is perfectly susceptible to all kinds of mechanical damage and corrosion. To save
Aventurine is one of the subspecies of quartz. Contrary to popular belief, it is a natural mineral. He
Rose quartz is a stone that brings love and inspiration. Its magical properties were discovered by the ancients
Property Description Formula Ca2(Mg,Fe)5[Si4O11]2(OH)2 Color Shades of green, white, gray. Gloss Glassy, greasy. Transparency From
