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Opal

October’s Opalescence by Debbie Yonick Bursting with life and vitality, the dazzling, hypnotic play-of-color that is opal inspires its moniker,...

Clear Quartz

Crystal Clear The illuminating powers of rock crystal quartz. By Carol Besler In ancient times, clear quartz, which is called rock crystal, was used...

Chalcedony

Calming Chalcedony The loveliest of blue quartz gems is a talisman for public speakers and makes a fashionable jewel. by Carol Besler Chalcedony is...

Emerald

Emerald: the springtime gem The vibrant green of emerald symbolizes renewal and fresh beginnings. It’s the perfect birthstone for May. By Carol...

About Us

What is the International Colored Gemstone...

The International Colored Gemstone Association (ICA), a non-profit organization, is the only...

Board Members

The ICA's Board of Directors comprise an international array of distinguished gem professionals...

Committees

The gemstone professionals that participate in ICA's committees share their business acumen and...

Ambassadors

Having members in more than 47 countries, the ICA strives to keep its international community...

About Us

The ICA is a worldwide body specifically created to benefit the global colored gemstone industry by advancing and promoting the knowledge and appreciation of colored gemstones.
New York Office: 31 West 47th St., Suite 1103, New York, NY 10036
+1 (212) 620-0900
ica (at) gemstone.org
Hong Kong Office: Unit 311B, 3rd Floor, Heng Ngai Jewelry Centre No. 4 Hok Yuen Street East, Hung Hom, Kowloon, Hong Kong
+852 2365-9318
ica (at) gemstone.org

ICA Newsletter