Colour Gemstones

The majority of gemstones are minerals that have crystallised as a result of high levels of pressure and heat in the Earth’s crust.

Although there is a large variety of minerals found on Earth, only a selection of those qualify as gemstones. Their beauty, colour and rarity are some of the properties that qualify them for selection.

Until recent times, coloured gemstones were divided into precious and semi-precious categories. This is no longer the case. Prices of gemstones have fluctuated with new varieties and increasing rarities.

Similar to diamonds, there are several properties that determine the value of a gemstone. The colour, cut, clarity and carat weight will influence both the price and quality of the gemstones. Other factors, such as whether the gemstone is treated or natural (untreated), will also impact value.

An increasing number of coloured gemstones are heat-treated to enhance their colour whilst stones like emeralds undergo an oil treatment. There is a large variety of enhancements and some are more acceptable than others.

Coloured gemstones that have undergone enhancements and treatments must be maintained with extra care.

There is a vast selection of coloured gemstones available in a selection of colours. To discover the properties of individual gemstones, follow the links provided.

Colour Stones

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