White Diamond and Kashmir Sapphires 

There has been a growth in demand for natural stones as in every 10,000, only one gets the gem quality structure, which can be recognized for its rare colours, intensity or colourless appearance. In 2019, the demand for coloured gemstones is expected to increase. 

The Knight Frank index shows the auction "True Colors" last September sold coloured gemstones worth $9 million. In the top ten luxury passion investments, jewellery is greatly appreciated. 

In the last decade, the overall appreciation was approximately 70 per cent, meaning the growth was about 12 per cent each year. 

The price of fancy coloured stones increased by 0.4 % in the third quarter of 2018 as compared to the previous year, and pink coloured gained 0.5% in the same quarter, while vivid blue ones outperformed all the other types of stones and had overall growth of 8.5% in the year.   

Recently, a 28-carat ultra-white diamond was found in Australian mines. It is an octahedral stone, unique in size, beautiful, and great shape. It was founded by Rio Tinto Argyle mines ( in the east Kimberley), which has been operating since 1983 and is at the point of shutting down in the next year. 

It is a miraculous stone, and the miners are seeking eligible buyers. It will be auctioned in Belgium Antwerp and can get millions in the sale.

Although the pink gems - the Australian mine, which is the source of over 90 per cent of such pieces- are set to close in 2020, the demand for pink ones is less than for coloured gemstones like  Kashmir sapphires. 

The blue ones are becoming the most desirable in engagement rings, which De Beers first marketed through the Diamonds are Forever campaign. 

Such stones dominated the recent Met Gala red carpet event. The participants showcased new designer jewels, and the top attractions included shoulder-dusting earrings, men's brooches and necklaces with large centre stones. 

Many designs had rare geometric patterns, and participants had colourful cocktail rings on multiple fingers. Jennifer Lopez endorsed the crystal gown, where she wore a necklace with 65.32-carat sapphires – the Purple Dragon. 

It was made with central purple sapphires surrounded by other stones and pear-shaped stones that were all set in platinum. 

Many celebrities wore Tiffany and Cartier at the event. The supermodel Bella Hadid had jewellery matching gloves. Kashmir sapphires have a strong trade track record, and clients worldwide are eager to get it. 

Recently, late 19th-century and early 20th-century items were put on sale in London, and it was one of the first auctions of the stone. The 17.43-carat Kashmir sapphires earned $944,713 higher than pre-auction estimates of $521,440. 

Similarly, other jewels of the gemstone were able to gain higher than the estimated value. A transformable diamond-sapphire necklace gained $375,713. It was designed by Grassy and had a 34.59-carat detachable gem. Its pre-auction estimation was in the range of $156,800 to $235,200.

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