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Welcome to TrefuGems.com

To begin the provenance for a diamond, we create a diamond identification report that starts with an affadavit of purchase. This affadavit begins the provenance for each stone and is included in the client’s report file.

After a diamond has been handed over to TrefuGems, we examine the diamond with an eye loupe and then share the observed details on the diamonds identification report.

More detailed information is taken for each stone and kept on file for our clients. Microscopic inclusions observed at 40x to 100x are documented and photographed but not shared on the internet or made public unless needed by the diamond buyer.

All tests used for the identification process avoid harming the diamond.

Trefu Gems Identification Report Diamonds

Diamond Identification Report

2 carat round brilliants ready for diamond identification reports

An identification report documents everything visible about a diamond without using destructive testing. Each natural diamond has a colour grade, transparency level, cut style, dimension and vibrancy.

Various inclusions and nicks on a stone may be natural or created by buyers, wholesalers and diamond cutters. Marks that are visible with a 10x loupe display the way a diamond travelled through the diamond world to TrefuGems and are marked on the identification report as a mark added in transit to TrefuGems.


Diamonds that are cut by a gem cutter and then giving directly to a client may not have these industry marks and will require an identification report to start the diamond’s provenance.

Diamond after light acid cleaning

About

TrefuGems is where Trefuly LTD shares information about our Diamond Reports. The diamond reports are for natural diamonds purchased through wholesalers and are marked with wholesaler nicks.

Our reports share basic information about our diamonds and begin the formal provenance for our diamonds.

Natural Diamonds for Investment

Blog

Quality Analysis Report – Alternative name for a Diamond Certificate from the 1980s

Trefuly is reviewing older versions of Diamond Courses to see if information in the market has changed dramatically. One change is the name of reports. In the 1980s the certificates were named Quality Analysis Reports by GIA (the course I’m reviewing). The goal of GIA in the 1980s was to standardise the language used for …

Impressum

Trefuly LTD is the owner of TrefuGems and all the images on this website. The diamonds shown on the website are not owned by TrefuGems but are owned by Dr. Emmy Horstkamp as her personal assets.

The website uses the photographs for the purpose of sharing information about diamond provenance which is incorporated into the Trefuly LTD project GWJ | Goes with Jeans.

Firmsme is working on POC for GWJ and keeps inventory for investors on Richmond Thames.