Dec 2019
Ownership Change for Diamond in United States
Scio Diamond was sold to Adamas One Corp in 2019, transferring ownership of U.S. synthetic diamond production.
United States production
Produced Diamond
Market intelligence
Relevant Events
2016
Processing Shutdown for Diamond in United States
Scio Diamond shut down its synthetic diamond production facility in 2016, curtailing U.S. synthetic diamond supply.
1 Jan 2013
Processing Expansion for Diamond in United States
Scio Diamond Technology Corp. expanded synthetic diamond production, raising U.S. output.
2011
Ownership Change for Diamond in United States
Scio Diamond acquired Apollo Diamond’s diamond‑growing patents in 2011, consolidating U.S. synthetic diamond technology.
1 Jul 2006
Mine Opening for Diamond in United States
Jericho Diamond Mine in Nunavut declared commercial rough diamond production on July 1, 2006, marking the first U.S. mine to reach commercial status since 2002.
31 Dec 2002
Tariff Change for Diamond in United States
10.5% ad val tariff imposed on simply sawn precious stones as of 12/31/2002, affecting trade.
31 Dec 2002
Tariff Change for Diamond in United States
10.5% ad val tariff imposed on other precious stones as of 12/31/2002.
31 Dec 2002
Tariff Change for Diamond in United States
4.0% ad val tariff imposed on imitation pearls as of 12/31/2002.
30 Apr 2002
Mine Closure for Diamond in United States
Kelsey Lake diamond mine ceased commercial operations and was fully reclaimed after April 2002.
1 Apr 2002
Mine Closure for Diamond in United States
Kelsey Lake diamond mine ceased commercial operations in April 2002, ending U.S. diamond mining activity at that site.
1 Jan 2002
Other for Diamond in United States
The U.S. Department of Defense began selling near-gem quality diamond stockpile materials, potentially affecting gemstone supply.
1 Jan 2002
Regulatory Change for Diamond in United States
The Kimberley process was fully implemented in 2002, enabling legitimate diamond trade following the end of conflicts in Angola, Congo (Kinshasa), and Sierra Leone.
31 Dec 2000
Processing Startup for Diamond in United States
Gemesis Corp. began commercial synthetic diamond production in 2000, adding new supply to the diamond market.
Sep 2000
Mine Restart for Diamond in United States
The Kelsey Lake Diamond Mine resumed production in September 2000 after a closure, boosting U.S. diamond output.
Sep 2000
Processing Expansion for Diamond in United States
New equipment was installed in Kelsey Lake’s main processing plant in September 2000, expanding recovery capacity.
Apr 2000
Ownership Change for Diamond in United States
Great Western Diamond Company acquired the Kelsey Lake Diamond Mine property from Redaurum Limited in April 2000, transferring ownership.
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