In recent years, supply of medium to fine quality rubies have dwindled to almost a standstill. When we say medium quality, the bare minimum standards that the gemstone must meet are at least:
- Eye-clean
- Good Lustre
- even colour, especially when viewed top-down (looking down at the table/face of the gem)
Last but not least, the all-important factor, and deal-breaker: whether the gem is heated or not. Please note that some jewellers may tell you that a gem is natural. This does not mean that the gem is unheated. To them, “natural” means that there is no external material being introduced into the gemstone. However, the fact remains that heating of gemstones is a process carried out to enhance the colour of the gem, without which, the original colour of the stone will look lacklustre or less vivid or less intense.
A good example as below:
2.1ct unheat ruby            Â
2.35ct heated ruby
Heat treatment is typically used to enhance colours of a gem and may also be used to improve clarity of the gem. As such, most aesthetically beautiful gemstones commonly seen in jewellery shops are have been heated.
Why we disclose to clients if a gem has been heated or not heated: simply because heated gemstones command a different price to unheated gemstones. Also, unheated and beautiful gemstones appreciate in value the quickest and hold their value the longest. Without a doubt, if money is no issue, beautiful unheated gems are the way to go.
2.03ct unheat blue sapphire
3.5ct heated blue sapphire
In this case then, does this mean that all unheated gemstones are not as gorgeous and beautiful as heated gemstones? No, this is where our specialty lies. Our clients come to us to source for unheated, yet beautiful gemstones.
Approximately 85% of all gemstones available in the market are heated. Of the remaining 15% that is unheated, possibly only 35% – 40% of these are aesthetically beautiful. Naturally, a premium is paid for unheated, yet gorgeous gemstones.
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