The company raised its full-year sales guidance while noting it has not yet assessed the potential impact of the latest tariff news.
Gem-A Instruments Now Distributor for GemPen
The portable device can be used to test diamonds to see if they are natural or lab grown and can also be used on colored gemstones.

London—Gem-A Instruments, a subsidiary of Gem-A, is now the official distributor of the portable GemPen screening device in the United Kingdom and worldwide.
Invented by gemologist, geologist and Gem-A accredited Teaching Center tutor Torbjörn Lindwall and made by Swedish company Gemometrics AB, GemPen uses full-spectrum Xenon ultraviolet light technology with a unique combination of wavelengths and filters.
When pointed at a diamond, ruby or sapphire, the instrument’s ultra-spectrum optical filtering, or USOF, technology displays the stone’s unique fluorescence.
By analyzing this effect and comparing what they see with The Gemstone Map, a virtual image bank of reference diamonds, sapphires and rubies tested by GemPen, a user can determine if the stone they are looking at is natural or lab grown.
The map is accessible online through the GemPen Academy.
GemPen can also be used to determine various treatments (HPHT, irradiation, etc.) in both natural and lab-grown diamonds and gemstones.
The GemPen Diamond Screener with filters 1 and 4 is priced at €2,050 ($2,419). GemPen Premium, which comes with all the filters, sells for €2,500 ($2,949).
The premium version of the instrument is marketed more toward gemologists, as more knowledge is needed to get indications on sapphires and rubies, while the Diamond Screener can be used by anyone.
“[GemPen] is a beautifully portable tool that can be used for colored stones as well as being a valuable diamond screening instrument and I am sure that as we continue to test it, it will present many more applications in the future,” said Samantha Lloyd, instrument manager at Gem-A.
Gemometrics AB is a technology company based in Luleå, Sweden.
Gem-A Instruments is a subsidiary of Gem-A, a London-based provider of gemology education that has been around since 1908 and says it is the oldest provider of gemology education in the world.
The instruments division has supported Gem-A students and members with essential gemological equipment for more than 50 years.
The Latest

The organization has raised more than $1.3 million for charity since its inception.

The brand’s latest iteration of a bezel-set diamond bangle features clean lines and a timeless design for a new modern silhouette.

As a leading global jewelry supplier, Rio Grande is rapidly expanding and developing new solutions to meet the needs of jewelers worldwide.

The first watch in the series commemorates his participation in the Civil Rights movement, marching from Selma to Montgomery in 1965.


The company added a retailer dashboard to its site and three new birds to its charm collection, the cardinal, blue jay, and hummingbird.

An additional 25 percent tariff has been added to the previously announced 25 percent.

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

The jewelry and accessories retailer plans to close 18 stores as part of the proceedings.

Its Springfield, Massachusetts, store is set to close as owner Andrew Smith heads into retirement.

Designer Hiba Husayni looked to the whale’s melon shaped-head, blowhole, and fluke for her new chunky gold offerings.

She will present the 23rd edition of the trend forecasting book at Vicenzaoro on Sept. 7.

Omar Roy, 72, was arrested in connection with the murder of jeweler Dionisio Carlos Valladares.

The New Orleans-based brand’s “Beyond Katrina” jewels honor the communities affected by the storm.

Lilian Raji explains why joining an affiliate network is essential for brands seeking placements in U.S. consumer publications.

The organization has awarded a total of $42,000 through its scholarship programs this year.

The winner of the inaugural David Yurman Gem Awards Grant will be announced live at the 2026 Gem Awards gala.

As summer winds down, celebrate the sunny disposition of the month’s birthstones: peridot and spinel.

Moshe Haimoff, a social media personality and 47th Street retailer, was robbed of $559,000 worth of jewelry by men in construction outfits.

Xavier Dibbrell brings more than a decade of experience to the role.

The addition of Yoakum, who will lead Kay and Peoples, was one of three executive appointments Signet announced Thursday.

The insurance company’s previous president and CEO, Scott Murphy, has split his role and will continue as CEO.

The nearly six-month pause of operations at its Kagem emerald mine earlier this year impacted the miner’s first-half results.

The necklace uses spinel drops to immortalize the moment Aphrodite’s tears mixed with her lover Adonis’ blood after he was fatally wounded.

The diamond miner and marketer warned last week that it expected to be in the red after significantly cutting prices in Q2.

Jewelers of America’s 35th annual design contest recognized creativity, artistry, style, and excellence.

Tratner succeeds Andie Weinman, who will begin stepping back from the buying group’s day-to-day operations.