Кварцевый порфир

Quartz porphyry

The history of this mineral begins long ago in ancient times… According to some sources it was discovered by the Romans, and according to other, quartz porphyry deposits were discovered at the instigation of Cleopatra. In any case, nowadays one can see various statues and vases, interior items and sarcophagi made of this stone in[…]



This mineral is better known as coil. This name occurred due to the fact that outwardly the texture of the stone resembles the color of snake, in particular in Latin. Serpens also means “serpent”. Noble serpentinite is characterized by color of different spots of gray, yellow, dark green and brown. Veins of calcite or dolomite[…]



At first, citrine was thought to be topaz because of its yellowish color. But in the middle of the 18th century the researcher Valerius discovered the so-called golden variety of quartz and identified this mineral as a separate type. In fact, citrine is a type of quartz. In nature, this is a quite rare mineral.[…]



This article deals with one of the most deceptive stones. The name “apatite” was offered by A. Verner in 1786. In Greek apathao means “I cheat”, “I mislead”. Such associations were caused by a variety of forms of apatite crystals. First, this stone was confused with other minerals – andalusite, beryl, tourmaline and many others.[…]



Turquoise, or “Persian miracle”, is one of the most metamorphic and beautiful minerals. A distinctive feature of this stone is the unusual color with various shades of blue – from pale to heavy, sky blue, bluish, and – with greenish hue due to ferric iron impurities. The stone was first brought to Europe from Turkey,[…]