Sponsored by Tasha R
What the GIA research team learned in Brazil
The passion to find more Paraiba tourmaline at one mine is “contagious” while another is yielding pockets of high-quality emeralds. Read on to learn, and see, more from the GIA’s recent expedition to Brazil.
The team, which included field gemologist Andrew Lucas, the GIA’s Director of West Coast Identification Shane McClure, video producer Pedro Padua and Gems & Gemology Editor-in-Chief Duncan Pay, traveled to Brazil from March 31 to April 17. Geologist and co-owner of Nature’s Geometry and Stone World President Sergio Martins also participated.
They visited the most important gemstone mining areas of the country, including Minas Gerais, Rio Grande do Norte and Paraíba, to gather information and document the current state of colored stone mines, particularly emerald and tourmaline.
The team also had the opportunity to interview Heitor Dimas Barbosa, the first discoverer of Paraiba tourmaline, in the original mine tunnel in Batalha where the gem was found.
On their trip to the Belmont mine in Minas Gerais, they found that it’s moving to new open pits while also continuing to develop its underground mining. The mine also is building a new state-of-the-art rough processing and sorting facility, and cutting around 60 percent of their own production, with a focus on higher quality stones.
In Nova Era, meanwhile, production at mines such as Monte Belo is yielding high-quality emerald from pockets.
The Cruzeiro tourmaline mine has produced great quantities of the stone from large pegmatites, which are intrusive igneous rocks with very large crystals that form in the later stages of a magma chamber’s crystallization, and all of its rubellite tourmaline goes to Shenzhen, China, for cutting and sale.
“We’ve never seen a mine produce the amount and quality of material as the tourmaline we saw coming from the massive pegmatites at the Cruzeiro mine,” Lucas said, adding that, “the value of Paraíba tourmaline has risen unbelievably and the passion to find more material at the mines was contagious.”
The GIA noted that mining and prospecting remains very strong in Paraíba and Rio Grande do Norte for the highly valuable Paraiba tourmaline.
Findings from the trip and a more in-depth look at the interview with Heitor Dimas Barbosa will be featured
The GIA regularly conducts research field trips to important gem and jewelry centers around the world, incorporating its findings into research practices and education practices as well as informing the trade of the new information through various channels.
The Latest
Three Titanic survivors presented him with the personalized Tiffany & Co. timepiece about a year after the tragedy.
A federal court found that the jewelry store chain violated terms of the settlement reached after it was accused of defrauding customers.
From protecting customer data to safeguarding inventory records, it's crucial to learn how to tackle cybersecurity challenges.
Cynthia Erivo chose Dreams of Hope, an organization dedicated to empowering LGBTQA+ youth, as the charity for this year’s collection.
The new space was designed to evoke a warm, inviting vibe.
Kinney, who spent nearly 30 years at IJO, has been hired to head Abbott Jewelry Systems’ new virtual marketplace.
This fall, sharpen your skills in jewelry grading, quality control and diamond assessment.
The auction house was accused of helping clients avoid paying taxes on millions of dollars’ worth of art purchased from 2010 to 2020.
The four finalists will present their pieces at the 2025 JCK Las Vegas show.
The “Camera Oscura” collection showcases earring designs celebrating female Surrealist artists Claude Cahun and Leonor Fini.
The money will fund the planting of 10,000 trees in critical areas across Oregon, Arizona, Montana, and other regions.
The event centered on advancing jewelry manufacturing technology will return to Detroit in May 2025.
Local reports identified the woman as the wife of the jewelry store owner.
A collection of pieces owned by Ferdinand I, the first king of modern Bulgaria, and his family, blew away estimates in Geneva last week.
The Australian jewelry box brand’s new West Village store will showcase new jewelers each month through its Designer in Residence program.
“Lovechild” was created in partnership with Carolyn Rafaelian’s Metal Alchemist brand.
Hampton discussed how Helzberg is improving the customer experience and why it was inspired by the company formerly known as Dunkin’ Donuts.
The group will host several curated events and an exhibition of designer jewelry made with Peruvian gold traceable to the miners’ names.
The collection honors the 50th anniversary of Dolly Parton’s “Love is Like a Butterfly” song, which shares a birth year with Kendra Scott.
This year’s theme asks designers to take inspiration from classic fairy tales.
Senior Editor Lenore Fedow makes the case for why more jewelers should be appealing to nerds at the annual event.
The latest “Raiz’in” drop showcases a newly designed “Scapular” necklace and donates a portion of the proceeds to Make-A-Wish France.
No. 1 out of 100, the timepiece was created to mark Citizen’s 100th anniversary and will be auctioned off at Sotheby’s next month.
On the latest episode of “My Next Question,” two experts share best practices for store security during the holidays and year-round.
Sotheby’s sold the necklace, which potentially has ties to Marie-Antoinette, for $4.8 million to a woman bidding via phone.
Instead of its usual elaborate display, the store will illuminate its façade and frame the windows to highlight its flagship’s architecture.