Events & AwardsDec 20, 2024
Two Participants Complete Inaugural Ella Klein InternshipJamie Dunton and Gabriella Botelho are the first graduates of the program, created by the WJA Foundation and Julius Klein Diamonds.
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.
More on Editors
The Latest
CollectionsDec 20, 2024
Piece of the Week: Retrouvaí’s Ring for CharityIn the spirit of giving, Retrouvaí will donate $4,000 from the sale of this ring to the Los Angeles Regional Food Bank.
IndependentsDec 19, 2024
Michigan’s DeVries Jewelers Unveils New Location in Time for the HolidaysCo-owner Dan DeVries shared what it’s like moving into a space triple the size of its old store and how it feels to be a “real jeweler” now.
Brought to you by
De Beers Group Launches Holiday Campaign for Natural Diamonds‘Forever Present’ campaign revives the iconic A Diamond is Forever tagline and celebrates the diamond dream.
CollectionsDec 19, 2024
State Property Transforms Spain’s Generalife Gardens into JewelryAlong with the latest “Gardens” collection, the brand has released limited-edition designs offering more indulgent pieces.
Weekly QuizDec 19, 2024
This Week’s QuizTest your jewelry news knowledge by answering these questions.
CrimeDec 19, 2024
Alleged Jewelry Thieves Attempt Rowboat EscapeThe man and woman are accused of stealing jewelry from a shipping container then trying to flee by paddling a small boat out into a bay.
SourcingDec 19, 2024
The Second-Largest Diamond Ever Found Now Has a Name The 2,488-carat diamond recovered from a mine in Botswana has been dubbed “Motswedi” while its 1,094-carat sibling is “Seriti.”
Brought to you by
Advocacy and Excellence: How Jewelers of America Is Committed to Elevating Our Industry For over a century, Jewelers of America has been the voice of the industry and valuable resource to jewelers across the country.
SourcingDec 19, 2024
Gemfields Reports Record Ruby Auction Results Despite Challenges at SourceThe average price per carat hit a record high for the miner, which said it remains unaffected by the conflict in Mozambique.
AuctionsDec 18, 2024
Alexandrite Ring Sells for Record-Setting $1.9M at Sotheby’sThe nearly 17-carat stone made history for the color-change gem that, according to the auction house, is experiencing a “notable surge” in the market.
WatchesDec 18, 2024
Historic Titanic Pocket Watch Winds Its Way Back to Tiffany & Co. More than a century after survivors gifted a Tiffany timepiece to the captain of the ship that rescued them, the jeweler has reclaimed it.
TechnologyDec 18, 2024
Picchiotti Utilizes AI in ‘Spotlight’ Video CampaignThe videos highlight how pieces from the “Xpandable” and “Reversible Xpandable” collections put the wearer in the spotlight.
IndependentsDec 18, 2024
Industry Veteran Steve Feldman Set to RetireFeldman reflected on 45 years in the jewelry industry and clarified that it’s not a total retirement.
Events & AwardsDec 17, 2024
Chanel to Receive Gem Award for High Jewelry ExcellenceThe luxury brand is being honored for excellence in high jewelry design in its “Haute Joaillerie Sport” collection.
SourcingDec 17, 2024
Frank Circelli, Founder of Gem Shopping Network, Dies at 75Circelli was a pioneer in the world of TV shopping who is remembered for his passion for gemstones and his big personality.
AuctionsDec 17, 2024
Blue Diamond Fetches $8.8M at Christie’sThe nearly 6-carat stone headlined the recent jewelry auction, which also featured Mica Ertegun’s jewelry.
CrimeDec 17, 2024
‘Black Bin Crew’ Robbers Get 14-16 Years in Prison The three men, who got their nickname because they’d toss the jewelry they stole into black plastic bins, were arrested back in August.
TrendsDec 16, 2024
Marion Fasel’s New Book Delves Into the History of Engagement Rings“The History of Diamond Engagement Rings: A True Romance” is a 128-page small-format book containing more than 165 images.
WatchesDec 16, 2024
Take a Look Inside the New Rolex Boutique on Rodeo DriveGearys opened a 6,200-square-foot Rolex store with a design that pays homage to the brand’s connection to the ocean.
GradingDec 16, 2024
GCAL By Sarine Expands 8X to 2 More Fancy Shapes The diamond cut grade is now available for marquise- and pear-shaped diamonds.
SourcingDec 16, 2024
Diamonds Do Good Announces 2025 Award RecipientsDDG said the honorees’ business practices embody a commitment to positive social impact, industry innovation, and community empowerment.
TrendsDec 13, 2024
Selena Gomez Said ‘Forever Begins Now’ to Marquise Diamond Engagement RingEstimates on the size and value of the solitaire diamond, which is mounted on a diamond pavé-set yellow gold band, vary.
TrendsDec 13, 2024
Piece of the Week: Martin Katz’s Tanzanite Drops These half-moon tanzanite earrings totaling 25 carats are part of a special trunk show taking place this weekend in Dallas.
Recorded WebinarsDec 13, 2024
Watch: The Highs and Lows of 2024The National Jeweler editors recap the top news, the best jewels, and their favorite stories of the year.
AuctionsDec 12, 2024
Tom Brady’s Watches Top $4M at Sotheby’s AuctionThe highest-grossing lot of the sale was the retired QB’s Rolex Paul Newman Daytona “John Player Special.”
SourcingDec 12, 2024
Grizzly Emerald Auction Garners $22.4MRecent expansion initiatives at the Zambian emerald mine have shown strong production numbers, said Grizzly founder Abdoulaye Ndiaye.
MajorsDec 12, 2024
Mark Henry Appoints New Director of SalesCarrie Forman joins the brand to guide it into the next phase of growth with major and independent retailers in the U.S. and abroad.
