CollectionsApr 16, 2024
Akaila Reid Launches ‘Eat Cake’ CollectionIt’s ultra-feminine and filled with gold, pearls, and soft pastels.
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
MajorsApr 16, 2024
Loudr Adds 2 DirectorsEmily Highet Morgan and Emily Bennett have joined the agency’s team.
MajorsApr 16, 2024
Stuller Releases First Lab-Grown Diamond Jewelry CatalogIts updated book for mountings is also now available.
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.
SourcingApr 16, 2024
Karen Rentmeesters Takes Over as Interim CEO of AWDCShe has been with the organization since 2010, most recently serving as its chief officer of PR and industry relations.
Weekly QuizApr 11, 2024
This Week’s QuizTest your jewelry news knowledge with this seven-question quiz.
TechnologyApr 15, 2024
Judge Rules Jeweler’s Lawsuit Against PNC Bank Can Move ForwardJoyce’s Jewelry sued the bank after cybercriminals drained its accounts of nearly $1.6 million through a series of wire transfers.
IndependentsApr 15, 2024
Alfred W. DeScenza of DeScenza Diamonds Dies at 95He is remembered by loved ones for his loyalty, integrity, and kindness.
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.
AuctionsApr 15, 2024
Madeleine K. Albright Jewelry, Pins Coming to AuctionHosted by Freeman’s | Hindman, the sale will take place May 7-8.
AuctionsApr 15, 2024
All of Sotheby’s ‘Rough Diamonds’ Sold in Less Than an HourThe auction house said all 24 timepieces offered in its underground sale of rare and avant-garde watches quickly found buyers.
Events & AwardsApr 15, 2024
10 Can’t-Miss Sessions at AGS Conclave 2024From lab-grown diamonds and AI to the inevitable Taylor Swift mention, here are some of Conclave’s most intriguing educational offerings.
Recorded WebinarsApr 12, 2024
Watch: What Jewelers Need to Know About InsuranceFrom cybersecurity liability to trade show coverage, insurance experts share tips on how to build the right policy.
CollectionsApr 12, 2024
Piece of the Week: Lionheart’s Evil Eye Gemstone CharmThe charm is a modern rendition of the evil eye amulet that has been worn for thousands of years.
Events & AwardsApr 12, 2024
The Jewelry Symposium Announces 4 Scholarship WinnersAhead of its trade show next month, TJS awarded free registration and accommodations to one jewelry professional and three students.
Policies & IssuesApr 11, 2024
SRK Exports’ Journey Toward Net Zero Impact By the end of this year, SRK’s diamond manufacturing complexes will achieve net zero emissions, one of an impressive array of achievements.
Lab-GrownApr 11, 2024
AGTA Bans Lab-Grown Diamonds, Gemstones at GemFairMembers can still sell lab-grown stones, it said, but only natural gems are allowed on the show floor.
IndependentsApr 11, 2024
Steven Rosdal, Co-Founder of Hyde Park Jewelers, Dies at 77He is remembered for his charisma, passion, integrity, kindness, and wit.
MajorsApr 11, 2024
Macy’s Opens Books for Possible BuyoutThe retailer also appointed two new board members, avoiding a proxy fight from a potential buyer.
CollectionsApr 10, 2024
Sylvie Launches New Nature-Inspired Collection, ‘Tulira’The bridal collection consists of 35 engagement rings and seven wedding bands.
WatchesApr 10, 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.
IndependentsApr 10, 2024
Levy's Fine Jewelry Explores Diamond History The family-owned jeweler has a new education section on its website dedicated to the history of diamond cutting.
CollectionsApr 10, 2024
With Clarity Partners With NFL on Wedding Bands The limited-edition men’s rings can be customized with one of 12 team logos.
SourcingApr 10, 2024
Compliance, Caution, and Concern: The Current Outlook of Indian Diamantaires There is a willingness to comply with new government-mandated regulations, with an insistence that they should be practical and realistic.
WatchesApr 09, 2024
Chrono24 Debuts Pre-Owned Watch Authentication ProgramThe program, now live in Europe, will roll out to the U.S. this summer.
AuctionsApr 09, 2024
Phillips to Offer 6.21-Carat Vivid Pink DiamondColored gemstones and signed jewels are the focus of its upcoming Geneva sale.
SourcingApr 09, 2024
Former De Beers Exec Appointed to Lucapa Board Stuart Brown, who was De Beers’ CFO and interim CEO, is now Lucapa’s independent non-executive chairman.
MajorsApr 09, 2024
Jewel360 Announces New POS Integration, JFC PartnershipThe point-of-sale software can now prompt customers to round up their credit card purchases as a donation to Jewelers for Children.
