Editors

A primer on lead glass-filled rubies

EditorsAug 06, 2014

A primer on lead glass-filled rubies

With all the recent consumer press reports accusing major chains of selling lead glass-filled rubies without proper disclosure, Associate Editor Brecken Branstrator takes a look at the rules for selling these stones.

While the prevalence of lead glass-filled rubies in the market and the issue of non-disclosure to consumers is far from new to the industry, it has been given new life in the consumer press in recent months.


Earlier this year, Inside Edition aired an episode that called out both Zales and Lord & Taylor for allegedly selling the treated stones as natural to shoppers. More recently, NBC’s Today show featured something very similar, criticizing J.C. Penney, Macy’s, Lord & Taylor, and the New York tri-state area’s Littman Jewelers.

The creation of these stones involves taking very low-quality, industrial-grade ruby and infusing it with glass that has a high lead content. Some stones are more ruby than glass while other are more glass than ruby.

In either case, the amount of glass in these stones is significant and they must be handled carefully because the glass can be damaged by a variety of standard practices. These stones are very unstable under normal conditions of wear and tear and can be damaged even by common household cleaners.

Though selling these types of rubies is legal, the Federal Trade Commission’s guides for jewelry requires disclosure at the point of sale when it comes to the treatment and care needed. According to its Guides for the Jewelry, Precious Metals, and Pewter Industries, “it is unfair or deceptive to use the unqualified [word] ‘ruby’… to describe any product that is not in fact a natural stone of the type described.”



 This photo provided by American Gemological Laboratories shows a composite ruby that has been damaged during jewelry repair, which happens due to the high content of lead-glass in these stones.

The lack of disclosing results in not only a loss of consumer confidence in regard to rubies but for all jewelry in general, as well as opens up the retailer to the possibility of legal action. This is why it’s more important than ever for retailers to be aware of what’s expected of them.

“If it has lead glass in it, it has to be disclosed that it’s treated and requires special care,” Jewelers Vigilance Committee’s Cecilia Gardner told me.

She added that when it comes to the term “natural,” she has had many gemologists tell her that after examining these kinds of rubies, they have found that there is so little natural material that labeling it as such would be inappropriate.

Different trade organizations have suggested different labels to use when it comes to describing these stones, though they have not yet reached a consensus, and the FTC currently is examining lead glass-filled rubies, especially when it comes to nomenclature and the disclosure process.

The JVC, along with a number of other trade organizations, submitted a brief to the FTC suggesting a number of revisions to its Guides so that there can be a standard throughout the industry.

They have taken the stand that the following vocabulary be used:
--That “natural” be used to refer to untreated rubies;
--That “treated” be used to identify a ruby that has been treated in a traditional methods, such as heating to modify color or healing open fissures by adding chemicals, and to which no significant weight is added;
--And that “imitation,” “manufactured,” “composite,” or “simulated” be used to describe the rubies that are low-grade, non-gem corundum and are infused or combined with lead glass to produce a stone that appears to be of higher quality, to which significant weight has been added.

When it comes down to it, the best way to avoid any issues is to be vigilant. Press suppliers for full disclosure, and provide the same for your customers to ensure their continued trust about the business in the future and to avoid legal action, from them or the government.
Brecken Branstratoris the senior editor, gemstones at National Jeweler, covering sourcing, pricing and other developments in the colored stone sector.

The Latest

Rolex Perpetual 1908 watch with 18-karat yellow gold bracelet
Policies & IssuesNov 14, 2025
U.S., Switzerland Reach Deal That Drops Tariff to 15%

The Swiss government announced the deal, which cuts the tax on Swiss imports by more than half, on social media Friday morning.

Napoleon Bonaparte diamond brooch
AuctionsNov 14, 2025
Napoleon’s Diamond Brooch Blows Away Auction Estimates

A buyer paid $4.4 million for the piece, which Napoleon wore on his hat for special occasions and left behind when he fled Waterloo.

Buccellati Étoilée earrings
FinancialsNov 14, 2025
Richemont’s Q2 Jewelry Sales Up 12%

Plus, how tariffs and the rising price of gold are affecting its watch and jewelry brands.

roseco-catalog.png
Brought to you by
Roseco Releases New Full-Line Catalog

Roseco’s 704-page catalog showcases new lab-grown diamonds, findings, tools & more—available in print or interactive digital editions.

Silvia Furmanovich x Mellerio Butterflies in Flight Jewelry Box
CollectionsNov 14, 2025
Piece of the Week: Silvia Furmanovich’s ‘Butterflies in Flight’ Jewelry Box

Furmanovich designed the box to hold Mellerio’s “Color Queen,” a high jewelry collection consisting of 10 rings.

Weekly QuizNov 13, 2025
This Week’s Quiz
Test your jewelry news knowledge by answering these questions.
Take the Quiz
JCK Las Vegas trade show
Events & AwardsNov 14, 2025
JCK Names New Event Director

Jennifer Hopf, who has been with JCK since 2022, will lead the execution of the long-running jewelry trade show.

Adler’s Jewelry storefronts New Orleans
IndependentsNov 13, 2025
127-Year-Old New Orleans Jeweler to Close

Adler’s Jewelry is set to close its two stores as 82-year-old owner Coleman E. Adler II retires.

20-Under-40-2025-LV.png
Brought to you by
Jewelers of America Aligns New Mission to Create Meaningful Impact for Members

From educational programs, advocacy, and recent MJSA affiliation, Jewelers of America drives progress that elevates businesses of all sizes.

Green Lake Jewelry Works Seattle interior
IndependentsNov 13, 2025
Green Lake Jewelry Works to Move to New Seattle Studio

Founder Jim Tuttle shared how a dedication to craftsmanship and meaningful custom jewelry fueled the retailer’s double-digit growth.

Leon V. Der Calousdian
MajorsNov 13, 2025
Vahan Jewelry Founder Leon ‘Sacha’ Der Calousdian Dies at 85

The third-generation jeweler is remembered as a passionate creative with a love of art, traveling and sailboat racing.

Father-son jewelers Faustino Alamo Dominguez and Luis Angel Alamo
CrimeNov 12, 2025
Father, Son Jewelers in Chicago Victims in Double Homicide

JSA and Cook County Crime Stoppers are both offering rewards for information leading to the arrest of the suspect or suspects involved.

Mellon Blue Diamond Christies
AuctionsNov 12, 2025
‘Mellon Blue’ Diamond Sells for $7M Less Than It Did a Decade Ago

A buyer paid $25.6 million for the diamond at Christie’s on Tuesday. In 2014, Sotheby’s sold the same stone for $32.6 million.

Mercedes Gleitze Companion Oyster
AuctionsNov 12, 2025
Historic Rolex Oyster Fetches $1.7M at Sotheby’s

Mercedes Gleitze famously wore the watch in her 1927 swim across the English Channel, a pivotal credibility moment for the watchmaker.

Gemological Institute of America logo
GradingNov 12, 2025
It’s Time: GIA’s Express Holiday Service Is Back

GIA is offering next-day services for natural, colorless diamonds submitted to its labs in New York and Carlsbad.

Tiffany & Co. Love Is a Gift Campaign and David Yurman The Joy of Extraordinary Memories campaign
MajorsNov 10, 2025
Jewelers Focus on Love, Joy In 2025 Holiday Campaigns

Tiffany & Co., David Yurman, and Pandora have launched holiday campaigns depicting their jewelry as symbols of affection and happiness.

Hand holding holiday shopping bags
SurveysNov 10, 2025
5 Things Retailers Should Know About Holiday Shoppers This Year

The National Retail Federation is bullish on the holidays, forecasting retail sales to exceed $1 trillion this year.

The Rainbow Collection Christies
AuctionsNov 10, 2025
300+ Colored Diamonds Up for Auction at Christie’s

Late collector Eddy Elzas assembled “The Rainbow Collection,” which is offered as a single lot and estimated to fetch up to $3 million.

Foundrae Palm Beach Location Exterior and Founder Beth Hutchens
IndependentsNov 07, 2025
Foundrae’s New Palm Beach Location Is a ‘Golden Solarium’

The brand’s seventh location combines Foundrae’s symbolic vocabulary with motifs from Florida’s natural surroundings.

Watches of Switzerland Mall of America store
FinancialsNov 07, 2025
Watches of Switzerland’s H1 Sales Up 8%

The retailer also shared an update on the impact of tariffs on watch customers.

AGTA Spectrum winners
SourcingNov 06, 2025
Pink Tourmaline Bracelet, Emerald Suite Take Top Spectrum Honors

Pink and purple stones were popular in the AGTA’s design competition this year, as were cameos and ocean themes.

G. St x Jewel Boxing Raffle for City Harvest Graphic
IndependentsNov 06, 2025
Greenwich St. Jewelers Hosts Raffle Supporting Food Rescue

All proceeds from the G. St x Jewel Boxing raffle will go to City Harvest, which works to end hunger in New York City.

Courtney Cornell
IndependentsNov 06, 2025
Cornell’s Jewelers Names New President

Courtney Cornell is part of the third generation to lead the Rochester, New York-based jeweler.

Trucks at Orapa diamond mine
SourcingNov 06, 2025
De Beers’ Production, Sales Increase in Q3

De Beers also announced more changes in its upper ranks ahead of parent company Anglo American’s pending sale of the company.

Ulrich Wohn
WatchesNov 05, 2025
Shinola President Steps Down Just as He Starts

Former Signet CEO Mark Light will remain president of Shinola until a replacement for Ulrich Wohn is found.

Artifex White Diamond, Fancy Dark Yellowish Brown Diamond, and Blue Sapphire Rings
AuctionsNov 05, 2025
Taylor Swift’s Engagement Ring Designer Makes Her Auction Debut

Kindred Lubeck of Artifex has three rings she designed with Anup Jogani in Sotheby’s upcoming Gem Drop sale.

Tyla Pandora Talisman collection
FinancialsNov 05, 2025
Pandora Posts Modest Q3 Sales Growth Amid ‘Weak’ Consumer Sentiment

The company focused on marketing in the third quarter and introduced two new charm collections, “Pandora Talisman” and “Pandora Minis.”

Brilliant Earth Jane Goodall Peace Medallion
FinancialsNov 05, 2025
Brilliant Earth’s Q3 Sales Climb 10%

The jewelry retailer raised its full-year guidance, with CFO Jeff Kuo describing the company as “very well positioned” for the holidays.

×

This site uses cookies to give you the best online experience. By continuing to use & browse this site, we assume you agree to our Privacy Policy