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The Jouwell Journal

Know your diamond before you buy it.

Certificates, the 4Cs, shapes and fair prices, explained simply by a gemologist with 40 years grading diamonds.

Certificates & grading 1 min read

How to read a diamond certificate

Carat, colour, clarity, cut, measurements, fluorescence: what each line on a certificate means, in plain words.

October 28, 2026
Certificates & grading 1 min read

GIA, IGI or HRD: which report should you trust?

Three respected labs, three report styles. What each one does well.

October 28, 2026

Newsletter

News from Jouwell

Diamonds worth a look and buying tips, a few times a year.

Help choosing

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