Article Search Results

Show Filters
Showing 100 results for "*"
Spinel 80909 300x169
Article
GIA's Gübelin Gem Project: Spinel

Found in nearly every colour – most notably red, pink and blue – spinels are popular gemstones because of their abundance, moderate cost and attractiveness.

Read More

Article
GIA's Gübelin Gem Project: Various Gems, Taaffeite - Zoisite

Among the collection assembled by Dr Edward Gübelin are a number of uncommon gemstones from many worldwide localities.

Read More

Article
GIA's Gübelin Gem Project: Various Gems, Sapphirine - Stibiotantalite

Among the collection assembled by Dr Edward Gübelin are a number of uncommon gemstones from many worldwide localities.

Read More

Article
GIA's Gübelin Gem Project: Various Gems, Olivine - Rutile

Among the collection assembled by Dr Edward Gübelin are a number of uncommon gemstones from many worldwide localities.

Read More

Article
GIA's Gübelin Gem Project: Various Gems, Kornerupine - Natrolite

Among the collection assembled by Dr Edward Gübelin are a number of uncommon gemstones from many worldwide localities.

Read More

Article
GIA's Gübelin Gem Project: Various Gems, Danburite – Humite

Among the collection assembled by Dr Edward Gübelin are a number of uncommon gemstones from many worldwide localities.

Read More

Article
GIA's Gübelin Gem Project: Various Gems, Barite - Cuprite

Among the collection assembled by Dr Edward Gübelin are a number of uncommon gemstones from many worldwide localities.

Read More

Article
GIA's Gübelin Gem Project: Various Gems, Amblygonite - Axinite

Among the collection assembled by Dr Edward Gübelin are a number of uncommon gemstones from many worldwide localities.

Read More

A large yellow cushion cut diamond pendant is partially framed with marquis cut diamonds and hangs from a necklace of mixed cut diamonds.
Article
Yellow Gemstones: Can You Identify Them?

Don’t judge a yellow gem by its colour alone. A variety of gemstones also come in shades of yellow, from diamonds to citrine to garnets.

Read More

A piece of diamond rough with green body color and triangular etchings on the surface.
Article
GIA Researchers Reveal the Secrets of Diamond-in-a-Diamond Mystery

GIA researchers in New York recently had the opportunity to examine one of the most interesting and unique diamond crystals ever found.

Read More