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Ruby facts

Ruby – Corundum
Hardness 9

Birthstone for July
40th Wedding anniversary

 Associated with Love and passion and fine quality rubies command the highest price per carat of all coloured gem stones. Considered the king of precious stones.

 Rubies are typically heated to improve colour – unheated rubies are very very rare and typically come from Africa – typically Mozambique. Burmese Rubies are the most highly prized a no heat from Burma this would certainly be worth far more than any other.

Heating to improve colour is very common and accepted. You would typically have a report with the stone to tell you it is no heat if it is a no heat.

 Rough ruby – gem (GIA images)

 

           

Fine quality origins: Burma, Sri Lanka, Thailand, Vietnam, Africa: Mozambique, Tanzania, Madagascar

Colour – Fine red Pidgeon blood is considered the finest, then red with purple tones, you also get pink and orange hues. (Chromium causes the red colour)

 Inclusions within Ruby – Fine rutile needles. These help the buyer know a stone is natural.

Eye visible inclusions are acceptable as clean rubies are so rare.

 

 

 

 

 

 

  • Post author
    Lucy Crowther