About Us

Benchmark Conversion has been working with clients to diversify their portfolios through the acquisition of natural coloured diamonds, precious gemstones and fine jewellery since 1985. Natural coloured diamonds and precious gemstones are an integral addition to a successful portfolio. As a tangible asset, natural coloured diamonds bring stability and increasing value to your portfolio. An asset that can be enjoyed anytime while increasing its value, your investment will enrich your life in more ways than one. Through Benchmark Conversion’s guidance and expertise, we bring you the highest quality product at aggressive market pricing.

Benchmark Conversion Advantage


With over 30 years of experience, and as a second generation family owned business, our knowledge and authority in the field is reliable and thorough. We have developed long standing trade relationships and always provide third party certification of all acquisitions which guarantees the soundness of all purchases.


Empowering our clients with the history and knowledge of their acquisition is of the upmost importance to us. We are passionate about sharing our fascinating and prestigious world of natural coloured diamonds. We always keep clients informed on their holdings as well as reporting new developments in the world of natural coloured diamonds as part of the continuing client education process.


We have a simple unconditional 15 day money back guarantee. We always serve the best interest of the client and having a confident client is of value to us. We maintain an unparalleled standard of service and offer guidance through every step of the process.

Our Mission

Our Vision

Benchmark Conversion is committed to becoming a leading provider of natural coloured diamonds in the global market.

Our Mission

To bring opportunity through naturally coloured diamonds, and to identify the value that such acquisitions can introduce to a portfolio.

Our Values

To serve our clients with integrity then through service, education, and satisfaction.