The smartest & easiest way to secure your investment on the blockchain

Secure your wealth with BlockGem

What We Do

Trade 100% certified diamonds on the blockchain within seconds and enjoy true ownership, total transparency and the best rates you can get on the market

We are the first Diamond/Bitcoin Exchange. We are in direct collaboration with the Diamond Trading Center of New York, Hong Kong and Antwerp.

Real Time Trading

Buy and sell certified diamonds within seconds  

Investment Diamonds

Rare fancy vivid colored diamonds as well as other great investment instruments are available for trading in our platform 


All our diamonds are graded 100% anonymously by the leading authorities HRD and GIA.


Pink Diamonds have shown the greatest growth in value, up by 360% in the last 9 years

Fancy Color Research Foundation – By Rapaport

Key Features

Our quality standards and technical expertise both in the blockchain and diamonds domain are guaranteed to give you the best trading experience.

True Ownership

Your Diamonds are secured in the vaults of Diamond Trading Center. Only you have the right to retrieve them.

100% Insured

All Diamonds are insured against theft, fire and other eventualities 

100% Genuine

All diamonds are screened by the leading Authorities 

Flexible Orders

Trade and invest at almost any volume since the minimum order is only 0.01 carat.

Ship your Diamond

The physical diamonds can be shipped to you any time you wish.



Our Partners

We have established strong bonds and cooperate directly with the biggest players in the market

  • Our fee is as low as 0.5% and gets even lower to 0.2% for bigger volumes!

  • Your diamonds are safely stored and 100% insured for just 0.029% per month. 


The Team

BlockGem was founded by George Kimionis and Toni X. Smit in 2016.

We aim to share our enthusiasm in the second quarter of 2016. Request early access by clicking here