Sapphire is the gemstone form of a mineral known as corundum, with one important 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 range of corundum called padparadscha (derived from the Sinhalese word for lotus blossom).
Colours of Sapphire
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Sapphires come in all manners of colours considered by the quantity of impurities present. Elements such as chromium, iron and titanium all conduce 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.
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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 extremely hard mineral, at five times the strength 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 extremely 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 industrialized 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, development it all the more significant for both industrial use and also in the jewellery trade.
The most significant source of natural sapphire is from Australia and Madagascar, although distinct 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 follow 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 commonly more costly than synthetic sapphire jewellery as natural sapphires are obviously rarer, the qoute however being that it can be extremely difficult to distinguish between 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. extremely favorite are sapphire rings such as eternity rings and engagement rings.
The blue range is perhaps 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.
The Sapphire - Origins, Properties and Uses14k Yellow Gold Created Ruby Heart Devil Pendant with Dia... Video Clips. Duration : 0.63 Mins.Read More: goo.gl Show off your sassy side with this devil heart pendant, crafted from 14 karat yellow gold. A stunning heart-shaped lab-created ruby serves as the centerpiece. Held in a three-prong setting, it has a faceted cut and a vibrant red hue. Curved devil's horns and a diamond-tipped devil's tail add a provocative touch. The pendant is featured on a 14 karat yellow gold rope chain that fastens with a... July Birthstone: Ruby Known as "king of the gems" in ancient Sanskrit, the ruby has long been prized for its rarity and its passionate red hue. Those born in July wear rubies as symbols of beauty, love, happiness, and good fortune. History of Birthstones Chances are you can name your birthstone, but have you ever wondered how certain stones came to be associated with particular months? Most...
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