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Ceylon Royal Blue Sapphire Oval available from King Stone Gems in Sydney Australia

Information About Sapphire

GENERAL INFORMATION

Of all the coloured gemstones throughout all the ages, sapphires would without doubt be the most well known. Just the name “sapphire” conjures up images of richly coloured blues, greens and yellows. Long before diamonds were ever even thought of for engagement rings, sapphires had always been worn to signify that special bond between two people. The engagement ring of Princess Diana featured an outstanding blue sapphire. Her engagement ring consisted of 14 solitaire diamonds surrounding a 12-carat oval blue Ceylon sapphire set in 18-karat white gold.

Sapphires are prized for their rarity, vivid colour and hardness second only to diamond. With their excellent hardness they are perfect for every jewellery setting.

 

FAMILY

If the mineral kingdom had a royal family, it would have to be the Corundums. This prestigious family includes the ruby (red) and sapphire (all other colours, most notably blue).

COLOUR

Sapphire comes in virtually all colours and shades – blue, pink, yellow, green, violet, purple, white, grey and more. It even comes in what’s called “parti” colours which is usually a blend of two or more colours in one stone. Some exceptional parti colour sapphires come from Australia and these are absolutely beautiful to see. Truly unique and each gem has its own distinct personality.

BIRTHSTONES AND ANNIVERSARIES

Sapphire is the birthstone for September.
Sapphire is the zodiac stone for Taurus.
Sapphire is the stone for the 5th, 45th and 70th anniversaries.

ORIGIN

Australia – Central Queensland Gemfields around Rubyvale and NSW around Inverell, Kashmir, India, Sri Lanka/Ceylon, Madagascar, Tanzania, Nigeria, Malawi, Kenya, Thailand, Burma, USA – Montana, Brazil and more.

MOH'S HARDNESS

9

TREATMENTS

The most highly desired are sapphires that are completely natural and untreated or have been heated only. There are other treatments that are performed on sapphires such as Beryllium difussion.

REFRACTIVE INDEX (RI)

1.762 – 1.788

SPECIFIC GRAVITY DENSITY

3.95 – 4.03

CLEAVAGE

None

Available Gemstones

King Stone Gems is the leading retail merchant of loose coloured gemstones in Sydney Australia