KYANITE

Everything is not notable until it has some special characters. Like that the mineral kyanite is a special one it has double hardness.

It is a semiprecious gemstone.

Toxic Mineral

Cinnabar

Cinnabar composition is Mercuric sulphide(HgS). Because of its scarlet red colour it is used as pigments and also used in jewellery. But owing to its mercury content it is identified as a toxic to humans.. so nowadays it is not used in jewelry..

EMERALD

Emerald is a Gemstone variety of Beryl. The colour comes from the trace amounts of chromium. This is the birthstone for MAY. Emerald is mined in Egypt, India and Austria since 15th century. Columbia is the largest producers in the world.

Amber

Amber is not a mineral.But it is used as a semiprecious stone. It is a fossilized tree resin. Special conditions are required to preserve this substance over millions of years.

Ruby

Ruby

A ruby is a pink to blood-red colored gemstone, a variety of the mineral corundum (aluminium oxide). The red color is caused mainly by the presence of the element chromium. 

The name ruby comes from Latin word ruber, which means red. In Sanskrit ruby is termed as ratnaraj which means King of Gems. Ruby is the birthstone for July.

 

Kohinoor

KOHINOOR !!

The Kohinoor now weighs 108.93 carats and is kept in the Tower of London .The kohinoor originated from India in Golconda at the Kollur mine in the present Andhra during the rule of the Kakatiya dynasty. The Kohinoor was then passed from one ruling dynasty to the next. The original name of the diamond was ‘Samantik Mani’

         The Persian invaded India and they acquired it and named it as KOHINOOR 

( Mountain of Light). Finally it went to the crown of British Queen Victoria.