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’ ground-breaking 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