Chamila Suranga, a gemmology researcher attached to Gemological Institute of Ratnapura inspects a 310 kilograms (683 pounds) heavy natural corundum blue sapphire at a residence where it is kept in Horana, about 41 kilometers (25 miles) south of Colombo, Sri Lanka, Sunday, Dec. 12, 2021. A gem company in Sri Lanka has unveiled the massive gemstone that is certified as a rare and one of the biggest corundums found in the country and plans to offer it to museums and gem collectors. (AP Photo/Eranga Jayawardena)
A gem company in Sri Lanka has unveiled a rare and massive gemstone weighing 683 pounds (310 kilograms) that has been certified as one of the biggest corundums ever found in the country.
Sri Lanka's National Gem and Jewelry Authority says it has done a series of gemological tests on five samples taken from the rock.
“To our knowledge this specimen is indeed a rare specimen and not recorded in the geological literature," read an authentication letter given by the authority to the owners who unveiled the stone on Sunday.
When the outer layer was removed for inspection, the interior showed a silky blue patchy appearance, the letter said, suggesting the stone is a blue sapphire.
Shanka Ruwanditha, a director of the company that currently owns the massive stone, the Gemological Institute of Ratnapura, told The Associated Press on Monday that the owners plan to obtain the services of a local or foreign gem valuer soon to determine the price of the rock.
Sri Lanka and especially its southwestern city of Ratnapura, or the Gem City in the local language, has been known for centuries for mining gems and precious stones.
Archer Aviation founder and CEO Adam Goldstein shares big news about the aerospace company's new partnership with NASA and why they want to make your trip to the airport just five minutes long.
iFit CEO Kevin Duffy shares how the company is bringing artificial intelligence-powered workouts to consumers, plus other fitness trends to be on the lookout for in 2024.
Macy’s is rejecting a $5.8 billion takeover offer from investment firms Arkhouse Management and Brigade Capital Management, saying they didn’t provide a viable financing plan. The firms offered $21 per share for the stock they don’t already own.
Sports Illustrated's employee union said in a statement that the layoffs would be a significant number and possibly all, of the NewsGuild workers represented.
CEO and founder of Pinstripes Dale Schwartz shares his thoughts on taking the company public, why they're set for growth this year, and why he's not concerned about inflation weighing on the restaurant sector.
With hype continuing to build for A.I. projects, expert insight on what companies seem poised to benefit, plus how it will impact the lives of everyday consumers.
