Coloured diamonds are achieved through various ways – natural or artificial methods. The colour can be traced to elements existing in the stones, like nitrogen (yellow), radiation (green) etc. giving it a fancy appearance. These colour changes are usually permanent, but could be impacted if high heat is used during setting repairs. Since coloured diamonds are becoming increasingly popular gemologists have come up with ways to create affordable varieties through the use of heat and radiation.

However, while purchasing coloured diamonds one must keep in mind to steer clear of dishonest sellers who use coatings to mask the true colour of a diamond.

Whereas synthetic coloured diamonds though chemically the same as natural diamonds are created in a lab. Synthetic diamonds are produced by well-known brands mostly for industrial use. This makes ownership of a coloured diamond true for buyers who would otherwise not be able to afford a natural stone.

Prices of coloured diamonds vary based on the intensity of the colour. Yellow and brownish diamonds are the most common. Diamonds that are blue, green and red are the far rarer and hence most valuable. Grading for coloured diamonds is different from white diamonds. They are categorised into very light, light, fancy light, fancy, fancy dark, fancy intense, fancy deep and fancy vivid.

Within a given grade, clarity, colour and cut affect the final price of the stone. Smaller diamonds carat can cost 10%-20% less than the rarer large gems. Remarkably well-cut stones and stones can cost 10%-20% more. Secondary colours, such as brownish yellow, reduce cost.

A good cut provides coloured diamonds its sparkle and brings out the colour intensity. White diamonds are cut in a way to maximize the light refraction. Facets and angles also enhance the colour of a diamond, so the cutter must keep in mind the best shape for the diamond to bring out the best colour.

Coloured diamonds are beautiful due to the vivid colours. As students of Jewellery Design it is important to possess basic knowledge about these gems. Enroll in the 3 years BSc. in Jewellery Design course at one of the best jewellery designing colleges in India.

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