Монолит

Adular stone and its properties Adular stone has been known and popular since ancient times. Thousands of years ago, when people just started to make hiking trails through the Alps, they came across layered fragments of a translucent gleaming stone. Many centuries passed before curious researchers asked the question: does the adularity not lose its properties of light irisation over the years? What determines the intensity of the decorative effects of the gem? How were mineral deposits formed?...

Fortunately, neither humans nor any other creatures eat Adamites. Therefore, it is not necessary to escape from arsenic poisoning after episodic communication with a beautiful and rare stone. Yes, and jewellery with adamites and adamites on the shelves of jewellery stores can not be found, although in some cases the stone is cut and set in silver. Adamite's story French mineralogist Gilbert-Joseph Adam, who worked in the nineteenth century, described adamite from samples brought from South America...

Https://www.Google.Ru/url?Sa=i&source=images&cd=&ved=2ahukewjm9psw1_jkahv_wcqbhegmafyqjrx6bagbeaq&url=https%3a%2f%2ffinesell.Ru%2fprirodniye-kamni%2falebastr.Html&psig=aovvaw2emqqrikqhwnwsc_ucwqmq&ust=1569937523167597 Alabaster Stone - Ancient and famous...

Mineral: Beryl Colour: Shades of Blue Mohs hardness: 7.5–8 Density: 2.67–2.71 g / cm3 Aquamarine 6 shared Aquamarine History The name given to aquamarine many centuries ago expresses the essence of the stone as well as possible, because from Latin “aqua marina” is translated as “seawater”. The name was assigned to the mineral thanks to the ancient Roman writer Pliny the Elder, who lived in the 1st century AD. e. In addition, it was Pliny who noted the similarity between beryls, emeralds and aquamarines...

Acanthite is an unusual mineral that contains silver sulfide. Origin of the name: The name of acanthite comes from the Greek word "acanthus" - spike (due to the characteristic shape of the crystals) Varieties of the mineral: Acanthite is stable at temperatures below 179 degrees Celsius. Silver sulfide of cubic modification, stable at temperatures above 179 degrees Celsius - argentite. In air, argentite is replaced by acanthite. The properties Syngonia: Monoclinic Composition (formula): Ag2S Colour:...