Sponsored by the Gemological Institute of America
Colored Stone Expert and Wholesaler David Patterson Dies at 89
He helped develop a process to synthesize alexandrite and founded manufacturer and wholesale company Geminex in the 1970s.
Patterson was born in Colorado in 1933 and attended Colorado State University, where he graduated with a degree in mechanical engineering.
But gemstones always called to him, ICA said. Patterson designed and built his own faceting machine and taught himself lapidary.
He also learned and developed the process to grow alexandrite.
In 1970, he contacted a group that had synthesized alexandrite and emerald and eventually started working with them, according to a column Patterson wrote that appeared as part of an article in the Gemmological Association of Great Britain’s Journal of Gemmology in 2012.
They had grown the crystals through one method but were starting to look at growing them via seeding.
When one of the team members was set to move to a new job, they asked Patterson if he wanted to buy the operation. He did, establishing Creative Crystals and stepping into the role of president.
Creative Crystals continued to develop the process, introducing its lab-grown alexandrite to the market officially at the 1972 AGS convention in New Orleans.
Though it drew “a significant amount of interest” there, according to the article, they still ran into plenty of resistance from jewelers.
“We came to believe the cost of marketing would exceed the size of the market. Therefore, we concluded it was a dead-end project for us.”
They sold the operation in 1979 to a limited partnership.
Patterson also started a gemstone manufacturing and wholesaling company called Geminex Corp. in 1975 in California.
Patterson was a longtime member of the ICA who established many relationships around the world throughout his career.
“He shared his knowledge and love of gemstones with all. He loved his alexandrite with a passion,” the organization said in an email remembrance.
The Latest

The 2025 Australian Open champion is the jewelry brand’s first athlete ambassador.

The West Village jewelry boutique’s new shop-in-shop is the cornerstone of Nordstrom’s revamped jewelry hall.

The Seymour & Evelyn Holtzman Bench Scholarship from Jewelers of America returns for a second year.

The brand’s “Golden Strada” statement necklace features round, marquise, and pear diamonds that sparkle like Fourth of July fireworks.


JSA’s Scott Guginsky provided a list of nine security measures jewelers should observe while locking up for the long weekend.

Located on Rodeo Drive, the store’s design was inspired by Hollywood and Los Angeles culture.

The countdown is on for the JCK Las Vegas Show and JA is pulling out all the stops.

The new location continues the brand’s celebration of its 25th anniversary.

The online watch marketplace’s “Time Is Our Thing” campaign highlights the importance of time.

Working with Amazon’s Counterfeit Crimes Unit and law enforcement, Pandora helped to shut down a large-scale counterfeit network in China.

The jewelry company has closed its three California brick-and-mortar stores, as well as its online shop, for now.

The company is providing the opportunity for an FIT student to work alongside master diamond cutter Willie Lopez in its workshop.

He is remembered for his successful entrepreneurship, generosity, and dedication to his family.

The jewelry store chain has reportedly been struggling with costs related to tariffs as well as tough retail competition.

Welcome warm summer days with red hot rubies perfectly chosen as July’s birthstone.

Co-founders Afzal Imram and Lin Ruiyin brought their son’s story of a cosmic egg, toadstool, and railroad to life in their new collection.

The best time to prepare for the holiday season is right now, according to columnist Emmanuel Raheb.

This year’s winner is Morgan Keefe, who is currently studying at GIA to be a gemologist.

“The Jewelry Book” comes out this September.

The company is focused on modernizing the custom jewelry buying experience with e-commerce tools like product visualization and 3D styling.

Following its recent acquisition, the storied brand has updated its leadership team and regional managers.

AGS also named the recipient of its “Women in Leadership” scholarship.

The 20-karat yellow gold and diamond wrap ring is modeled after the Monstera plants in the garden of the brand’s Miami villa.

Rocksbox President Allison Vigil shared the retailer’s expansion plans, and her thoughts on opening stores in malls.

The creator of the WJA Chicago chapter is remembered as a champion for women in the jewelry industry and a loving grandmother.

The decline was consistent across age groups and almost all income groups, with tariffs and inflation still top of mind.