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Faceting a new synthetic Emerald to match

One of the jewelers had a customer who wanted a matched set of trillion cut synthetic Emeralds. They could not find a matching stone in a short amount of time and they happened to have a piece of rough, so they asked me if I could cut thier rough to match the trillion.

In a case like this, it is important to match the facet pattern.

To do this, I wax their trillion to a dop stock and put it in my machine. I search and find all of the facets on the gemstone to be matched. I recorded all of the angles and indexes in order to duplicate the cut of the trillion. This alone can take about a half hour, depending on how many facets the stone has.

A rough synthetic Emerald and a trillion cut synthetic Emerald.

Rough synthetic Emerald and Trillion

On the left is the piece of rough which the jeweler gave me to cut.

On the right is the trillion synthetic Emerald which the jeweler needs matched.

An arrow telling users to click on the photo to make it larger.

I put the jeweler's trillion synthetic Emerald on my machine and measured and recorded all of the angles and indexes so that I could duplicate the cut.

This shows two matched green trillion synthetic Emeralds.

Synthetic Emerald that I faceted to match

The synthetic Emerald on the left is the one that I cut to match.

→ Take me back to examples of Faceting Gems to Match a broken sample ....


Denton Anderson,
Gemologist & Gem Cutter
click photo for Video

Photo of Denton the gem cutter.

Graduate Gemologist, GIA, GG
Over 20 years of experience.