A new exhibit has been unveiled at the Smithsonian's National Museum of Natural History. "Great American Diamonds," featuring four of the most significant diamonds found in the United States.
On June 13 the International Gemological Institute, Italy and Gem-Tech presented a workshop entitled "Sales Support Tools: Magazines and Certificates." The well-attended session took place at Officina Vanvitelli, in the Monumental Complex of the Belvedere di San Leucio, Caserta, Italy.
The gavel fell at $12.9 million for the 101.41 carat 'Juno' diamond and $0.7 million for the 111.59 carat 'Earth Star' at Sotheby's New York last week, pushing the total sum for this distinctive pair of pear shaped diamonds over the $13 million mark.
Demonstrations of IGI's new interactive eLearning Courses were provided to attendees of the recent JCK Las Vegas show. The on-demand, fully responsive courses provide fundamental gemological education while emphasizing information buyers are most interested in.
IGI has analyzed and graded a 30.18 carat emerald cut laboratory grown diamond, the world’s largest to date. Produced by Ethereal Green Diamond, LLP the 30.18 ct “Pride of India” is the first polished lab grown diamond to exceed 30 cts.
IGI Education Director John Pollard will join Rob Bates, Tanya Nisguretsky and Marty Hurwitz to present "The State of Lab Grown Diamond Industry" this Thursday. Rather than the usual "pro/con" arguments, the panel will address evolving new topics including melee, the implications of patent expirations and paradigm shifts in planning and cutting.
IGI recently graded 27.27 carat, 20.24 carat and 15.16 carat lab grown diamonds produced by Greenlab Diamonds LLP as part of their "sustainable and affordable luxury" project. The 27.27 and 20.24 carat gemstones are the largest polished lab grown diamonds ever produced.
Handheld gemstone testers are commonly used to differentiate between diamond and diamond-simulants like CZ and moissanite. However, as diamond growing technology advances the technology used in those devices becomes more limited.
After a heated 11 minutes of bidding, the 205 carat Red Cross Diamond "rocked" Christie's Geneva by selling for $14 million dollars, a whopping 40% over its high pre-sale estimate. The famous Fancy Intense Yellow diamond, originally unearthed in 1901, was fashioned with a pavilion distinctively crafted in the shape of a Maltese cross.
In the normal diamond color range 'Z' is classified as most tinted while 'D' is classified as most colorless. So what happened to A, B and C? Are they reserved for new diamond discoveries? Extraterrestrial diamonds? What could possibly be more colorless than most colorless? If there are 23 classifications why not start with 'A' and end with 'W?'
In 2020 Synova, introduced the "Da Vinci Diamond Factory," an automated system capable of transforming rough diamonds into fully polished round brilliants. Synova has continued to increase its range and recently made it possible for rough diamond scans, used by many entities, to be incorporated into its planning and execution.
Petra Diamonds, owner of the legendary Cullinan diamond mine, is looking to sell their Koffiefontein mine, a sister operation acquired from DeBeers' in 2007. Established in 1870, Koffiefontein is one of South Africa's oldest diamond mines, located just 50 miles south of Kimberley.
An eight minute bidding war resulted in one of the highest prices ever paid for a diamond on Wednesday, when the 15.10 carat "DeBeers' Cullinan Blue" diamond sold in Hong Kong. Four participants kept raising the stakes until the gavel finally fell at $57.5 million, smashing the pre-sale estimate of $48 million.
Round brilliant, cushion, and other shapes with depth are historically most popular because they're both aesthetically pleasing and economically practical. Flat shapes are not as common, which is why we wanted to spotlight these creative, rarely seen shapes.
The Red Cross invests 93.5% of dollars they spend on people in need and, according to Christie's, a “significant” cut of the $11 million dollars this diamond is expected to bring in on May 11 will, again, be donated to its namesake organization.
A team of international researchers have discovered a fast-moving exoplanet, nearly 13 times larger than Earth, with vast clouds of liquid metal and corundum - the mineral which forms rubies and sapphires - blowing across the planet.
A phenomenal 50 carat diamond is available for viewing by appointment in Palm Beach. The centerpiece of a high jewelry collection titled "Graffabulous," the new owner of this historic D Flawless oval cut will have the opportunity to name the diamond before Graff adds it to their timeline of famous gemstones.
Fancy colored diamonds are very rare to find in nature. They represent less than 0.01% of diamonds mined in the world - or, about 1 in 10,000. Furthermore, nature produces some colors with far more frequency than others, so a diamond transmitting your favorite color might be, literally, 1 in a million.