Expert Gemmology Services

Certified gem analysis and diamond grading you can trust.

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Detailed gem identification reports.

Accurate diamond grading by GIA standards.

Professional advice on gemstone care.

Close-up of a gemmologist examining a sparkling gemstone under a loupe.
Close-up of a gemmologist examining a sparkling gemstone under a loupe.
A certified diamond grading report alongside a brilliant cut diamond.
A certified diamond grading report alongside a brilliant cut diamond.
Hands carefully cleaning and inspecting a collection of colorful gemstones.
Hands carefully cleaning and inspecting a collection of colorful gemstones.

About Christien Oldbury

Professional gemmologist with diplomas from Gem-A and GIA, dedicated to authenticating and valuing fine gems.

Portrait of Chritien Oldbury examining a gemstone under a jeweler's loupe in a bright, professional setting.
Portrait of Chritien Oldbury examining a gemstone under a jeweler's loupe in a bright, professional setting.

150+

15

FGA

GIA

Our Services

Expert gemmology insights and diamond grading you can trust.

Gem Identification
Close-up of a gemmologist examining a gemstone under a microscope.
Close-up of a gemmologist examining a gemstone under a microscope.

Precise analysis to verify and classify your precious stones.

A sparkling diamond being graded with professional tools.
A sparkling diamond being graded with professional tools.
A certificate from the Gemmological Association of Great Britain displayed on a desk.
A certificate from the Gemmological Association of Great Britain displayed on a desk.
Diamond Grading

Detailed reports based on GIA standards for your diamonds.

Consultations tailored to collectors and jewelry professionals.

Personal Consults

Gems

A glimpse into rare and exquisite stones

Close-up of a sparkling blue sapphire under natural light
Close-up of a sparkling blue sapphire under natural light
A brilliant-cut diamond reflecting light with fiery brilliance
A brilliant-cut diamond reflecting light with fiery brilliance
A collection of polished emeralds showcasing deep green hues
A collection of polished emeralds showcasing deep green hues
A rare pink tourmaline with vibrant color and clarity
A rare pink tourmaline with vibrant color and clarity
An assortment of loose gemstones arranged on a velvet cloth
An assortment of loose gemstones arranged on a velvet cloth

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Contact

Expert gemmological advice and support

Email

info@gemmologist.net

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