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Rare Gemstones for Sale London
Rubies for Sale London

Our Rubies are mainly from Mozambique and many of them are Natural Rubies from 0.30 cts to very important pieces – up to 15 carat size.

Sapphires for Sale London

Our Sapphires, including Pink Sapphires, are from both Sri Lanka and Madagascar and we carry sizes from 0.30 up to 20 carats.


We are closely connected with one of the largest diamond houses in New York, allowing us to extend our boutique services beyond the realm of coloured stones and into the diamond market.

Sico International Limited is one of the largest loose gemstone dealers in London, specialising in precious coloured gemstones – predominantly the Ruby and Sapphire.

Anthony Aziz, Sico International's Company Director, has over 40 years of experience within this particular area of the market, possessing an expertise no one else can offer. 

All of our stones are certificated using a range of world renowned laboratories – including GRS, Gubelin, SSEF or C.Dunaigre (Swiss) Laboratories

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Rubies, Sapphires and Diamonds for Sale London

How can we help?

Sico International are experts in sourcing and buying the finest and rarest coloured gemstones available in the world. Contact us and we'll be delighted to offer our boutique services in helping you choose the right Rubies, Sapphires or Diamonds.

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