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SAPPHIRE FACTS

SAPPHIRES, ARE THE MOST VALUED GEMSTONES IN HISTORY Sapphires are the most highly valued and hardest gemstones behind diamonds. The color par excellence of the sapphire is blue, however, we can find it in green, yellow, violet, black or transparent. With a hardness of 9.0 on the Mohs scale, sapphire is the third hardest mineral on the planet, after diamond and moisanite which have a hardness of 10 and 9.5 respectively. Both sapphire and ruby belong to the corundum family, a type...

Minerals and their characteristics

Minerals are solid substances that are present in nature and can be made up of one or more combined elements (chemical compounds). Gold, silver and carbon are elements that form minerals on their own. They're called native elements. In contrast, the Common cooking salt is a chemical compound called rock salt, which is a mineral formed by sodium and chlorine ions. The atoms, ions and molecules that form a mineral are present in space in an orderly manner and according to well-defined geometric...

10 facts about diamonds

The word "diamond" came from the ancient Greek word adamas, which means "unbreakable", "unalterable" or "unconquerable".A diamond is known as the hardest natural substance on Earth. It has a perfect score of 10 on the Mohs scale of mineral hardness. This means that a diamond can only be scratched by another diamond.The Star of Africa or Culliman is the largest diamond ever found. This 3106 carat diamond was found with other pieces also of considerable size. Of this batch...

Types of precious stones

Diamonds, emeralds, rubies and sapphiresare four of the most valuable and sought-after gems in the world. DIAMOND Diamond is a precious stone formed from pure carbon in a crystalline formation that is generally transparent and colorless. It is also the hardest natural substance on Earth. It occupies the highest place on the Mohs mineral hardness scale with a 10. It has the highest brightness of all transparent gemstones. Its name comes from the ancient Greek adámas which means "which means invincible or...

Precious and semiprecious stones: Meaning and classification

Gemstones (also called Gems) are minerals, rocks or inorganic and organic materials that have been cut, polished and then turned into a jewel. They were classified for the first time in the categories of "precious stones" and "semiprecious stones" in the mid-19th century. Today, the categorization is not always correct since the “Value” parameter is not the only criterion on which experts rely on to evaluate a stone. The quality, the rarity, the origin must be taken into account. What...

Offer!! Citrine – 15.46 ct

Citrine Size. Oval Weight. 15.46 ct Shape / Cut. 17.55 x 13.38 x 11.25 mm Color. Yellow Clarity. Natural Inclusions Treatment. Heated Origin. Brazil The origin is the opinion of the seller. Certificate number of the expert gemologist himself No. 3432 The shipment will be made by agency.   Offer!! 42€

Offert!!! Agate – 32.45 ct

Agate Size. Cushion Cabochon Weight. 32.45 ct Shape / Cut. 25.38 x 24.74 x 5.82 mm Color. Multicolor Clarity. Natural Inclusions Treatment. No indications Origin. Morocco The origin is the opinion of the seller. Certificate number of the expert gemologist himself No. 2528 The shipment will be made by agency.   PRECIO 16€   Gemstone Gemstone Gemstone Gemstone Gemstone Gemstone

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