Sapphires from Kashmir are most Expensive 

Fancy coloured diamonds provide the opportunity to answer to innovative demands during Valentine's season when the buyers seek diamonds in the uncommonest colours - the vibrant pink, deep yellow and radiant blue. Blue remains to be the most desired of buyers in terms of value and demand, where the supply is limited. 

During Valentine's week, many buyers hunted for perfect diamonds for their partners, where they wanted to attain the exceptional blue gemstones at varied price points. 

The prices increased double-digit in the last few years over uniqueness and rarity. Most of the sales came through the secondary markets (the gemstones previously owned by other buyers), as the mining of blue colour diamonds dropped.  

Blue Sapphire buyers compare price points

The high-priced blues are often Kashmiri sapphires, which are deep saturated captivating, found across the mines in Asia and Africa. The stones accumulate in alluvial deposits and are leftover by water flow. These can be found tunnelling down an ancient riverbed. These can be found in yellow colour or like a star. 

The origin of sapphire matters a lot to the buyers. If there are two such stones from Madagascar and Kashmir, the difference in value can be up to $80,000 per carat. The branding of such stones is based on the country of origin, where the buyers are willing to pay more for diamonds from Kashmir, Columbia, and Burma. 

The buyers are usually not looking for 4Cs, but for the marketplace and the origination. The origin, quality, history, and éclat can get a higher value. The blue gems from Indian administered Kashmir are most valuable and highly prized due to the perfect velvet blue hues, and Colombian emeralds are perfect greens. 

Burmese stones are mostly pigeon-red rubies. If the Myanmar stones are too dark, it can be rated lower to unique Mozambique gems.  History and location increase the desirability of such stones. 

The mines in Kashmir and Mogok have depleted and the output is reducing significantly, which lessens the chance of getting a newly mined stone.  Due to a decline in supply, buyers are getting such stones from the secondary markets. 

Similarly, the Colombian emeralds have been hit by severe underinvestment, which can change after the inflow of foreign investors in the coming years. 

Other flourishing Gems 

A few other flourishing coloured stone markets include the Tanzanite and Paraiba tourmalines. Tanzanite demand is high in the Chinese markets, where it is believed to be a gemstone of generation. Its supply is expected to drop in 25 to 30 years. But in the commercial gem market, the value of these stones can be very low. 

Similarly, the Paraiba tourmalines from Brazil are scarce and valuable. Such stones can also be obtained from Mozambique and Nigerian mines. These are smaller in size and its prices can be in the range above $10,000 per carat.   

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