What are precious stones and to choose the best one?
The Rainbow Gemstone is traditionally considered that way are the diamond, the ruby, the emerald and the sapphire.
They are substances formed from mineral deposits of the earth, and that subjected to pressure and extreme temperatures, their atoms are united in an ordered and rigid structure.
Lab Created Diamonds are considered stones or gems that have been losing value and that before, were considered precious stones.
Precious stones
So the correct classification of this Garnet Gem is that the precious stones are all those stones or gems that according to their crystalline forms are suitable for use in jewelry. That is to say that in the category of precious stones we find diamonds, sapphires, emeralds and rubies as well as most of what we know as semiprecious stones, for example, amethyst, tourmalines , citrine, diamonds, sapphires, the aquamarines, etc
.
Ornamental stones
Generally opaque minerals and some rocks with which they can be used in jewelry and decorative objects. The onyx, obsidian, malachite, unakite, charoite, jasper, aniolite are.
The lapis lazuli, still a rock, is considered a precious stone.
What precious stones are there?
Taking into account the properties of Lab Grown Diamonds such as: rarity, beauty and durability have been classified into precious and semiprecious stones. You can look for Ruby Online
Properties of stones
Rarity: this property is related to how easy they are, their chemical composition and structure, their origin, whether they are natural, compound, fine, etc.
Beauty: it implies the color and / or transparency as a consequence of the purity of the stone, the luster that has to do with the nature of the stone: whether it is adamantine, silky, pearly or resinous.
Durability: refers to the hardness or resistance to scratching, brittleness, resistance to physical and chemical agents and tenacity: unbreakable.
Density: is the proportion and structure in which the element or elements that make up the precious stone are arranged.
How are precious stones formed?
Lindly Star Sapphire are formed in diverse environments. The vast majority do so in the crust of the earth, at a depth of 4.8 to 40 km. Only diamonds and periodontal are formed in the mantle, a layer deeper than the crust. The mantle consists mainly of molten rock, with a solid top layer.
List of precious stones and minerals
Diamond
Of all the precious stones , the diamond is the one with the simplest atomic structure. The carbon atoms come together forming a rigid structure that can be contaminated by a few types of foreign elements such as boron and nitrogen.
The diamond is one of only two types of gems that form in the mantle of the earth, the others are formed in the crust, that is, the upper layer, at a depth between 4.8 to 40km.
Atomic diamond structure
Each carbon atom is linked, through the electrons, to each of the four closest atoms forming a tetrahedral structure, which makes it the second most stable form of carbon after graphite and the hardest natural substance in the world.
Characteristics of the diamond in its natural state
- Chemical composition: pure carbon
- Hardness: 10 on the Mohs scale
- Brightness: adamantine
- Melting temperature: 86 Cº
- Optical properties: transparent, translucent and opaque.
- Location: Mantle of the lithosphere, under the plates
Continental relatively stable and in a meteorite impact location
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