The Sapphire - Origins, Properties and Uses

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Sapphire is the gemstone form of a mineral known as corundum, with one foremost caveat: A sapphire is only a sapphire unless it is red, when it is known instead as a ruby. In fact there is one more stipulation to the rule, in the case of a pinkish-orange collection of corundum called padparadscha (derived from the Sinhalese word for lotus blossom).

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• Simple classic gemstone stud earrings in basket setting
• Ruby is the May birthstone.
• Available in many different gemstones in 6mm and 8mm
• Gemstones may have been treated to improve their appearance or durability and may require special care.
• Made in USA

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Colours of Sapphire

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Sapphires come in all manners of colours determined by the quantity of impurities present. Elements such as chromium, iron and titanium all lead towards shifting the hue of the otherwise transparent mineral to a vast spectrum of colours such as yellow, pink, green, orange and the well known blue variety. Sapphires can also be found in tones of grey and black.

Ruby Earrings Yellow Gold and The Sapphire - Origins, Properties and Uses

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Properties of Sapphire

Sapphire is a very strong and hardy mineral, it not only has a melting point greater than 2000 degrees C but it is also infusible and insoluble. It is also an very hard mineral, at five times the vigor of glass it is very resilient to scratching and as such has many practical applications other than for use in sapphire jewellery such as sapphire rings.

Practical Applications of Sapphire

Whilst sapphire is a very sought after gemstone in the jewellery business (having been used in items such as sapphire rings, bracelets, pendants etc.), uses have also been found for it in fields such as electronics and construction. The first laser ever made was with a rod of synthetic ruby - the red cousin of sapphire.

Sources of Sapphire

Sapphire comes in two varieties; natural and synthetic. Natural sapphire must be mined... Naturally, and synthetic sapphire is grown through a procedure first advanced by the French chemist Auguste Verneuil in 1902, later dubbed the Verneuil process.

Advancements in the yield of synthesizing sapphire mean that today sapphire can be cheaply manufactured on a very large scale, making it all the more important for both industrial use and also in the jewellery trade.

The most important source of natural sapphire is from Australia and Madagascar, although different varieties can be found in deposits all over the world.

Star Sapphires

A star sapphire is so named due to the appearance of a star-shaped pattern which presents itself when the sapphire is lit by a singular top-down light source. This pattern is the consequent of a phenomenon known as an asterism. An asterism can be found in any types of gem, in star sapphires they are due to intersecting needle-like impurities.

Star sapphire jewellery valuation is dependent on the colour and intensity of the asterism present.

Sapphire Jewellery

Natural sapphire jewellery is ordinarily more costly than synthetic sapphire jewellery as natural sapphires are obviously rarer, the question however being that it can be very difficult to distinguish in the middle of natural and synthetic sapphires without help from an expert. The cost of the sapphire gems used in jewellery depends on any factors including colour, clarity, size, cut and quality.

As mentioned above, sapphire jewellery exists in a wide range of forms as with any high-priced gemstone. very beloved are sapphire rings such as eternity rings and engagement rings.

The blue collection is possibly the most valued form of sapphire on the market, and so often finding the highest price. Sapphires in the shade cornflower blue are the most prized and valuable, known as the 'Kashmir Sapphire' or 'Cornflower Blue Sapphire'. The pinkish-orange corundum padparadscha however can fetch higher prices than even the finest blue sapphires.

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