Our Sales Process

We carefully sort and grade coloured gemstones before selling them at private auction.

Gemfields’ sorting and grading of rough gemstones is a highly skilled process. Rough gems are sorted according to their colour, size, shape and clarity. Consistency is key to buyer confidence.


Gemfields’ groundbreaking auction process transformed the international supply of rubies and emeralds when it was introduced in 2009, bringing transparency and consistency to a previously chaotic practice.

View our Authorised Auction Partners