GCAL Introduces 8X Cut Grade for Proprietary Cuts
Patented and specialty cuts now can receive an 8X Proprietary Certificate, which can be customized to include a company’s brand and logo.

Earlier this month, the New York-based laboratory announced the launch of 8X Proprietary Certificates for patented and specialty cuts. GCAL can customize the certificates to include a company’s brand and logo.
JannPaul Diamonds, a diamond retailer in Singapore known for its innovative cuts, is the first to issue the new certificates, GCAL said. Founded by CEO Paul Hung in 2010, JannPaul holds 10 proprietary diamond patents, including the “White Series Collection.”
“JannPaul is world renowned for their exacting standards and exceptional patented diamond cuts. It’s an honor they’ve selected GCAL as their grading laboratory,” GCAL Chief Operating Officer Angelo Palmieri said.
The company has “an amazing ability to design and execute innovative diamond cuts that deserve to be recognized through a multitude of metrics that help consumers appreciate their outstanding precision,” he added.
GCAL introduced 8X as the “Ultimate Diamond Cut Grade,” and first issued 8X certificates to round brilliant-cut diamonds in 2021 before adding oval and princess cuts in 2022.
The cut grade encompasses eight aspects of evaluation, including both traditional cut analysis methods (polish, symmetry, and proportion analysis) and direct assessment of the actual light performance (including brilliance, fire, scintillation, and optical symmetry).
Palmieri said the addition of proprietary cuts to the 8X family was a logical next step, considering the growing number of consumers looking for something other than a traditional round brilliant.
“In 2020, and for the first time, the number of fancies coming through the GCAL lab surpassed rounds. And this trend is continuing. This is why we introduced the oval and princess 8X diamonds at JCK last year, and why 8X cushions and radiants are in the works,” he said. “Proprietary cuts are a logical addition to the 8X grading system.”
“Today, diamonds are being designed and precisely faceted in patterns and shapes we would have once thought unimaginable,” he continued.
“We have experienced a great deal of interest in 8X cut grading on proprietary-cut diamonds and the stones coming through our lab are nothing short of sensational.”
For more information about 8X cut grades for proprietary cuts, contact GCAL at 212-869-8985 or via email, awp@gcalusa.com.
The Latest

The partnership, a pledge to protect Africa’s Okavango River Basin, has been extended for an additional five years.

The new facility, its first outside of Thailand, will boost its manufacturing capacity by 50 percent.

The special-edition “Dream” pendant, our Piece of the Week, was created to mark Hearts On Fire’s 30-year milestone with 30 diamonds.

Experience gemstones with greater precision and comfort than ever before.

Dubai Jewelers in Springfield, Virginia, was once again the target of an armed robbery.


YouGov’s 2026 U.S. Most Recommended Brands report’s out, and a fast-fashion giant is sitting at No. 1 while Rolex is just shy of the top 5.

Proceeds from its jewelry raffle will benefit an organization working in India to combat silicosis, a lung disease affecting stone cutters.

Submit your pieces for a chance to win in this year's competition.

The rings, crafted by Jason of Beverly Hills, celebrate the hockey team’s Stanley Cup win with design elements that honor its traditions.

This roundup of birthstone jewelry for October features vibrant tourmalines and opals with personality.

President Duma Boko spoke at back-to-back events in the city last week, touting Botswana’s stability and the diamond “bounceback.”

The catalog showcases 112 new, one-of-a-kind pieces amid highlights from the jeweler’s historic archive.

Its Montepuez Ruby Mining operation in Mozambique, which is not yielding enough high-quality rubies, has taken a $125 million hit.

Those surveyed were worried about the present and the future, with write-in responses mentioning high oil and gas prices.

The event will take place on the evening of Oct. 26 in New York City.

She is remembered for her joie de vivre, upbeat personality, genuine interest in other people, and love of the Alabama Crimson Tide.

Online bidding is open now for Julien’s sale of items owned by the “Walk On By” singer, whose final album comes out this fall.

The founder and executive chairman of Stuller Inc. is being honored for his impact on the jewelry industry at the 25th annual Gem Awards.

December is the most popular month to propose, and jewelers need to keep that in mind when planning their holiday marketing.

Cat ladies of the jewelry world, unite. Sandy Lerner’s collection of cat jewelry and other objects is going up for auction Wednesday.

“Vibrations” features several firsts for De Beers’ high jewelry, including the use of chalcedony and diamonds sourced from artisanal miners.

The “Bows” collection features three interpretations of the bow motif designed with Georgian and Victorian influences.

The American Gem Society recognized industry members, one Guild, and a law enforcement official for their contributions to jewelry.

Through a new system integration, customers can now receive instant personal jewelry insurance quotes at the time of appraisal.

Five of the 10 fastest-appreciating Rolex models on Bob’s Watches were Datejust 31 or Lady Datejust watches.

The Sherwood family and AJS Creations CEO Tejas Shah purchased the jewelry chain back from Palladium Equity Partners.

“The Elizabeth Taylor Collection” uses lab-grown diamonds and gemstones in contemporary designs inspired by the icon.



























