Wednesday, 19 April 2017

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.


Tuesday, 18 April 2017

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..



Monday, 17 April 2017

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.




Kutti Story - தொல்லுயிர் எச்சம்

            பூமியில் பல கோடி ஆண்டுகளுக்கு முன்னர்  வாழ்ந்து அழிந்த உயிரினம் பற்றி இன்று எப்படி அறிகிறோம்??          65 கோடி ஆண்டுகளுக்கு முன...