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Gary Roskin

Gary Roskin
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Natural Pearls

Gary Roskin -

Is it a Padparadscha, or not?

Gary Roskin -

Sotheby’s Magnificent Jewels

Gary Roskin -

From the Gem & Mineral Vault

Gary Roskin -

What is a “Circular Brilliant”?

Gary Roskin -
Conch Pearls

An Unusual Pearl: Coated or Not?

Gary Roskin -

Making an Impression: The Art and Craft of Ancient Engraved Gemstones

Gary Roskin -
Not Just Another Pocket Stone

Not Just Another Pocket Stone

Gary Roskin -

2022 CGA Gem Conference

Gary Roskin -
Surface Diffusion

Ti Surface Diffusion: Just when you thought it was an easy...

Gary Roskin -

A Wearable ET Pallasitic “Death Star”

Gary Roskin -

Lizzadro: Celebrating 60 years!

Gary Roskin -
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