Gemworld International

Gemworld International 40+ years of market research, pricing, and education. GemWorld International, Inc. holds a unique position within the gem and jewelry industry.
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The company is a recognized leader in the area of gem market analysis, consulting, training, publishing and appraising. The firm conducts specialized market research to determine wholesale price and supply and demand trends for more than 70 gemstone varieties. The information is disseminated through the company’s publication the GemGuide, which incorporates the Gem Market News. This subscription b

ased publication is marketed internationally. GemWorld’s independence and more than 31 years of researching gem pricing for the industry has made the GemGuide the standard for independent, market-driven, accurate wholesale pricing. We specialize in independent jewelry appraisals for Insurance, Estate, Divorce, Legal, and Expert Witness. We have performed thousands of appraisal assignments for consumers and the jewelry trade. For insurance assignments, you will be present with your jewelry in our secure offices. Independent appraisals done in our office by appointment only. GemWorld International Inc. offers educational hands-on workshops focusing on a range of topics. The aim of these classes is to provide teaching strategies specific to gem market pricing and identification challenges. The company also offers individualized corporate training programs tailored to specific objectives of the client. For more and in-depth information on GemWorld International, Inc., please visit www.gemguide.com

Pink sapphire demand has had its peaks and valleys over the past few decades, with some pop culture moments bringing pin...
06/22/2026

Pink sapphire demand has had its peaks and valleys over the past few decades, with some pop culture moments bringing pink hues to the fore and making it more popular, from Jennifer Lopez’s pink diamond engagement ring to Ben Affleck in 2002 to the 2023 blockbuster hit Barbie.

Right now, it’s not particularly strong, and yet prices at the fine and extra fine end have spiked over the past two to three years. This seems largely due to one major factor: supply, or rather, a lack thereof.

Get an update on the pink sapphire market in our May/June issue.

(📸: Anita Ko bezeled emerald-cut pink sapphire and diamond ring)

Beloved for its vibrant neon blues, Paraíba tourmaline from Brazil still has a premium on price over material from other...
06/17/2026

Beloved for its vibrant neon blues, Paraíba tourmaline from Brazil still has a premium on price over material from other sources, especially as the fine and extra fine goods are increasingly scarce on the market. Want to dive deeper into the world of Paraíba tourmaline and its pricing in the market? Check out our latest (free!) Gem Focus newsletter for all the details!

Join GemGuide Editor-in-Chief Brecken Branstrator in a week's time to talk about big diamond trends!
06/16/2026

Join GemGuide Editor-in-Chief Brecken Branstrator in a week's time to talk about big diamond trends!

Curious about what’s shaping today’s diamond market? Join the AGA 2026 Virtual Conference and gain expert insights into the trends, challenges, and opportunities influencing the industry.

Explore topics including:

💎 Valuing pink diamonds in the post-Argyle era
💎 Extraordinary auction results and market trends
💎 Demand for large natural and synthetic diamonds
💎 Evolving consumer preferences and buying behavior
💎 The cultural and economic forces driving interest in natural diamond jewelry

Hear from respected industry experts as they share valuable perspectives on valuation, market dynamics, and the future of diamonds.

🗓️ June 26, 2026
⏰ 12:00 PM – 3:00 PM PDT

Registration includes:

✅ Access to the live virtual conference
✅ Access to the conference recording once it is published by AGA—so you can revisit presentations or catch up on anything you missed

Registration:

🔹 AGA Members: $75
🔹 Non-Members: $125

Don't miss this opportunity to deepen your understanding of today's evolving diamond market and gain insights you can apply long after the event concludes. 💎✨

To learn more, visit: https://accreditedgemologists.org/event/colors-of-the-diamond-market/?post_id=12696

Today’s complex faceting and carving techniques are turning out very unique and, from an appraisal perspective, sometime...
06/15/2026

Today’s complex faceting and carving techniques are turning out very unique and, from an appraisal perspective, sometimes challenging gemstones mounted in jewelry.

Weights and measurements can be less straightforward when a mounted gemstone has extensively faceted or carved surfaces. Comparables can be more difficult to find. Some of the more extreme examples might defy description: Is it a carving? Or a fantasy cut? Or is it both?

Get helpful suggestions from experts in the trade for intricately cut or carved mounted gemstones in our May/June issue.

(📸: A 3.95-carat Starbrite-cut pink sapphire from John Dyer Gems . Image courtesy of John Dyer Gems.)

Live in the app now! GemGuide has made changes to the ruby pricing charts. 💎Rubies from Mozambique have increased in pri...
06/11/2026

Live in the app now! GemGuide has made changes to the ruby pricing charts.

💎Rubies from Mozambique have increased in price.

💎We have also modified the Burma ruby charts. Due to scarcity of material in the category creating a situation where price is secondary to availability, we felt that offering pricing across our traditional 1-to-10 quality range was no longer practical. Starting now in the app and in the July/August issue, the Burma ruby chart will provide pricing for only four grades. To price other grades, GemGuide users should interpolate from the listed categories.

Similar changes to sapphire prices will be released along with the launch of the July/August issue.

Reach out to the team with any questions or concerns.

This year’s Las Vegas jewelry trade shows saw a dramatic escalation in mood, with buyers appearing more comfortable with...
06/10/2026

This year’s Las Vegas jewelry trade shows saw a dramatic escalation in mood, with buyers appearing more comfortable with elevated gold prices, and exhibitors reporting strong demand for color, yellow gold, and bolder bridal styles. Read more about this year’s Vegas shows in our latest digital Trade in Focus newsletter.

JCK Events
Couture
Las Vegas Antique Jewelry & Watch Show


(📸: The Design Atelier at the recent Couture jewelry trade show in Las Vegas offered a look at the up-and-coming design talents of the fine jewelry world.)

💎✨ Are you interested in exploring the vibrant colors of the diamond market?Register today for the AGA Virtual Conferenc...
06/08/2026

💎✨ Are you interested in exploring the vibrant colors of the diamond market?

Register today for the AGA Virtual Conference, Colors of the Diamond Market, and gain valuable insights into today's evolving diamond market from leading industry experts.

GemGuide Editor-in Chief Brecken Branstrator will be speaking about big diamond trends, especially at auction. Experts will also speak on post-Argyle pink diamond valuation trends and natural diamond jewelry trends.

Don't miss this engaging virtual conference packed with market knowledge and expert perspectives!

📅 June 23
🕛 Starts at 12:00 PM PDT

🔗 Register now at AccreditedGemologists.org or head over to the AGA - The Accredited Gemologists Association page.

Japanese akoya pearls have become a world-renowned luxury category. But as categories evolve, so, too, must an industry’...
06/03/2026

Japanese akoya pearls have become a world-renowned luxury category. But as categories evolve, so, too, must an industry’s practices if the products are to not only retain existing fans but also attract new ones.

So how does the Japanese cultured akoya pearl industry compete in the global market? By digging into its rich history of innovation and overcoming some of its secrecy and modesty to keep collectors hooked.

The first step was to invite media guests to Japan to learn; join them on the journey. Read more about it in our May/June issue.

(📸: Pearl sorting at Otsuki Pearl Co. in Kobe. Photo credit: Jennifer Heebner)

Despite the ongoing uncertainty in the global jewelry and gemstone market, GemGenève wrapped up its 10th edition with go...
05/28/2026

Despite the ongoing uncertainty in the global jewelry and gemstone market, GemGenève wrapped up its 10th edition with good visitor turnout and positive feedback from exhibitors. Many reported a selective and informed demand for rare, unique, and colorful pieces.

Curious about how the show went and what was trending in sales? Check out our latest Trade in Focus newsletter for all the details.



(📸: Diamonds from Dynamic International)

Asterism is a rare phenomenon in gems, and it captures the attention of many collectors and connoisseurs.For gem trader ...
05/18/2026

Asterism is a rare phenomenon in gems, and it captures the attention of many collectors and connoisseurs.

For gem trader and author Martin P. Steinbach, AIGS AG and DGemG FGG, it became a life obsession that led to him trying to gather as many as possible into one place.

This resulted in the Martin P. Steinbach Star Collection (MPSSC), comprising more than 1,200 gems, which he has called one of the biggest and most complete private star gem collections in the world.” Read more about it in our May/June issue.

(📸: Martin P. Steinbach is pictured here with a 739-carat star diopside from southern India. Image courtesy Martin P. Steinbach; Photo credit: Michael Peuster)

Address

Glenview, IL
60026

Opening Hours

Monday 9am - 5pm
Tuesday 9am - 5pm
Wednesday 9am - 5pm
Thursday 9am - 5pm
Friday 9am - 5pm

Telephone

+18476570555

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