CollectionsApr 26, 2024
Piece of the Week: Jacquie Aiche’s Starry Galaxy NecklaceThe necklace is featured in the brand’s “Rebel Heart” campaign starring Adam Levine and Behati Prinsloo.
EditorsSep 12, 2019
5 Things To Know About … Sphene
Discover what gives the gem a fire that can out-sparkle a diamond, its second name, geographic origins, and more.
A 17.49-carat sphene cut by Roger Dery
Sphene is one of those magical gems that can really enchant you—the best faceted examples display brilliant fire and flash three different colors.
I, for one, love when the gemstone is a vibrant, almost lime green that also shows flashes of orange and yellow.
Sphene belongs to the titanite mineral group, occurring as an accessory mineral in granitic and calcium-rich metamorphic rocks, and is the only member of the group commonly used in jewelry.
Here are five things to know about this unique gemstone.
1. It has another name.
Sphene comes from the Greek word “sphenos,” meaning wedge, a reference to the mineral’s characteristic wedge-shaped crystals.
But it also goes by the name titanite, referencing its place in the mineral group.
According to many online sources, “sphene” is more commonly used in the gem and jewelry sector while geologists and mineralogists tend to use “titanite.”
2. Gem-quality examples are rare.
Sphene is a collector’s gem and is particularly rare when you start talking about a clean stone above 5 carats, the International Gem Society says.
As is the case with all gemstones, size creates a premium with this species.
I, for one, love when the gemstone is a vibrant, almost lime green that also shows flashes of orange and yellow.
Sphene belongs to the titanite mineral group, occurring as an accessory mineral in granitic and calcium-rich metamorphic rocks, and is the only member of the group commonly used in jewelry.
Here are five things to know about this unique gemstone.
1. It has another name.
Sphene comes from the Greek word “sphenos,” meaning wedge, a reference to the mineral’s characteristic wedge-shaped crystals.
But it also goes by the name titanite, referencing its place in the mineral group.
According to many online sources, “sphene” is more commonly used in the gem and jewelry sector while geologists and mineralogists tend to use “titanite.”
2. Gem-quality examples are rare.
Sphene is a collector’s gem and is particularly rare when you start talking about a clean stone above 5 carats, the International Gem Society says.
As is the case with all gemstones, size creates a premium with this species.
A 20.96-carat sphene from Mayer & Watt
3. It has more “fire” than a diamond.
Sphene has one of the highest dispersions of any mineral; the term dispersion refers to a mineral’s ability to break white light into spectral colors.
The dispersion of sphene is 0.051. A diamond’s dispersion, by comparison, is 0.044.
It’s this high number that helps to give the stone such an intense “fire,” showcasing multiple colors, especially when it’s well-cut.
Sphene has a refractive index of 1.843-2.110 and a birefringence of 0.100-0.192. Its high birefringence often results in visible doubling of facets within the stone, meaning there looks to be a “fuzziness” inside the gem.
It’s a 5 to 5.5 on the Mohs scale, making it softer than other, more well-known gems like sapphire, ruby and even garnet.
Sphene has distinct cleavage in one direction, but can still create beautiful jewelry when cut and set properly.
It’s also pleochroic, showing more than one color depending on the angle from which you view it; sphene’s transparent specimens are notable for their trichroism, showing three different colors.
The three colors depend on the base stone color, according to Gemdat.org.
A 24.75-carat pear-shaped sphene from Mayer & Watt
4. It comes in a variety of hues, but some are preferred.
Sphene’s typical color range is yellow, green, orange and brown. There are also pinks and reds, which are rarer, as well as some black and colorless material.
According to IGS, there’s a preference in the market for lighter tones, especially the yellows, light oranges and greens, which best show off the gemstone’s amazing dispersion.
IGS also notes that “chrome sphene”—dark green in color—is the most valuable type as its hue mimics a good emerald.
5. Here are its sources.
The primary sources of sphene are Canada, Madagascar and Mexico, IGS says.
Baja California, Mexico produces yellow-brown, brown, green and dark green (chrome) crystals up to 4 inches long, making it one of the world’s main sphene deposits.
Madagascar produces green crystals, some of which are large in size, while Canada produces brown and black crystals.
IGS added that Austria and Switzerland also have both produced sphene.
Other places where sphene has been found are: India, Sri Lanka, Afghanistan, Germany, Kenya, Myanmar, Pakistan, Russia, New York state and Minas Gerais, Brazil.
According to IGS, there’s a preference in the market for lighter tones, especially the yellows, light oranges and greens, which best show off the gemstone’s amazing dispersion.
IGS also notes that “chrome sphene”—dark green in color—is the most valuable type as its hue mimics a good emerald.
5. Here are its sources.
The primary sources of sphene are Canada, Madagascar and Mexico, IGS says.
Baja California, Mexico produces yellow-brown, brown, green and dark green (chrome) crystals up to 4 inches long, making it one of the world’s main sphene deposits.
Madagascar produces green crystals, some of which are large in size, while Canada produces brown and black crystals.
IGS added that Austria and Switzerland also have both produced sphene.
Other places where sphene has been found are: India, Sri Lanka, Afghanistan, Germany, Kenya, Myanmar, Pakistan, Russia, New York state and Minas Gerais, Brazil.
Editors' Picks
Sponsored by
More on Editors
The Latest
Events & AwardsApr 26, 2024
AGS Conclave and GIA Symposium Are ConvergingThe two organizations will host a joint event, “Converge,” in September 2025.
SourcingApr 26, 2024
Anglo American Reportedly Shopping De Beers as BHP Eyes Anglo Big changes appear to be on the horizon for the diamond miner and its parent company, Anglo American.
Brought to you by
The Blueprint for Success in Scalable, Personalized Jewelry RetailWith Ho Brothers, you can unlock your brand's true potential and offer customers the personalized jewelry experiences they desire.
Events & AwardsApr 25, 2024
Alexis Padis Takes Over as AGS Board President Padis succeeds Lisa Bridge, marking the first time the organization has had two women board presidents in a row.
Weekly QuizApr 26, 2024
This Week’s QuizTest your jewelry news knowledge by answering these seven questions.
WatchesApr 25, 2024
Audemars Piguet and John Mayer Partner on Limited Edition WatchThe Royal Oak Perpetual Calendar "John Mayer" was celebrated at a star-studded party in LA last week.
SourcingApr 25, 2024
De Beers Lowers Production Guidance for 2024The announcement came as the company reported a 23 percent drop in production in Q1.
Brought to you by
How Jewelers of America Represents Your BusinessFor over 30 years, JA has advocated for the industry, fought against harmful legislation and backed measures that help jewelry businesses.
MajorsApr 25, 2024
Detroit Lions’ QB Jared Goff Keeps Going to JaredThe three-time Pro Bowler continues to partner with the retailer, donating to a Detroit nonprofit and giving watches to fans.
CrimeApr 24, 2024
Jewelry Crime Declines Significantly, But Dollar Losses Remain High A double-digit drop in the number of in-store crimes was offset by a jump in off-premises attacks, JSA’s 2023 crime report shows.
CollectionsApr 24, 2024
Pippa Small Announces ‘Venus’ CollectionInspired by the Roman goddess of love, the designer looked to the sea for her new collection.
FinancialsApr 24, 2024
Kering’s Jewelry Brands a Bright Spot in Tough Q1The luxury titan posted declining sales, weighed down by Gucci’s poor performance.
Events & AwardsApr 24, 2024
JCK Industry Fund Announces 2024 Grant RecipientsThe selected nine organizations have outlined their plans for the funds.
SourcingApr 24, 2024
Rio Tinto’s Q1 Production Drops Amid Pause to Honor Lost Colleagues The mining company’s Diavik Diamond Mine lost four employees in a plane crash in January.
WatchesApr 24, 2024
These Are Rolex’s New Watches for 2024 The crown introduced a dozen timepieces in Geneva, including a heavy metal version of its deep-sea divers’ watch.
ColumnistsApr 23, 2024
The Smart Lab: Advanced Email Marketing Strategies for Mother’s DayEmmanuel Raheb recommends digging into demographic data, customizing your store’s communications, and retargeting ahead of May 12.
IndependentsApr 23, 2024
Hannoush Jewelers Opens New Store in New York Located in the town of Queensbury, it features a dedicated bridal section and a Gabriel & Co. store-in-store.
SourcingApr 23, 2024
Lucapa Sells 3 Diamonds for $10.5M in First Lulo Tender of 2024A 203-carat diamond from the alluvial mine in Angola achieved the highest price.
GradingApr 23, 2024
GIA Has a New Book About William RuserRuser was known for his figural jewelry with freshwater pearls and for his celebrity clientele.
CollectionsApr 22, 2024
Jacquie Aiche’s New Campaign Stars Adam Levine, Behati PrinslooThe “Rebel Heart” campaign embodies rebellion, romance, and sensuality, the brand said.
SourcingApr 22, 2024
Virtual Diamond Boutique Rebrands as ‘VDB’The overhaul includes a new logo and enhanced digital marketplace.
MajorsApr 22, 2024
Signet Raises Nearly $9M for St. Jude Children’s Research HospitalThe money will go toward supporting ongoing research and aftercare programs for childhood cancer survivors.
CollectionsApr 19, 2024
Piece of the Week: Retrouvaí’s Treasure NecklaceA new addition to the “Heirloom” collection, this one-of-a-kind piece features 32 custom-cut gemstones.
CrimeApr 19, 2024
Grand Jury to Hear Case Against Jeweler Charged in Fatal Shove Following IJO ShowLast month in Dallas, David Walton pushed another jeweler, David Ettinger, who later died.
MajorsApr 19, 2024
Unique Designs Acquires China PearlThe move will allow the manufacturing company to offer a more “diverse and comprehensive” range of products.
GradingApr 19, 2024
AGS Ideal Report Now Available in Printed FormFrom now through mid-May, GIA will be offering the reports at a 50 percent discount.
SourcingApr 18, 2024
Diamond Trade Remains Cautious Amid Economic UncertaintyDe Beers’ rough diamond sales were down 18 percent year-over-year in its latest round of sales.
