Adamant Co., Ltd. is a component manufacturing company based in Tokyo, Japan. Its name is from the wordadamant, which was derived from the Greek word adamas meaning "diamond". At of its founding, Adamant's main products were watch jewels that were made of a hard material. In 1957, Adamant separated from Namiki Precision Jewel Co., Ltd. It started sales of jewel bearings for watches and clocks and began to manufacture cap jewel, hole jewel, impulse jewel and pallet stone. In 1980, it started manufacturing ferrules for the optical communication industry utilizing injection molding engineering and polishing techniques. Adamant merged with its parent company, Namiki Precision Jewel Co., Ltd., to establish Adamant Namiki Precision Jewel Co., Ltd. on January 1, 2018.
History
1957 - Adamant Shoji Co., Ltd. was established.
1959 - The Company Changed name to Adamant Kogyo Co., Ltd.
1960 - Began to manufacture jewelled bearings for watches.
1967 - Akita Factory was set up at Yuzawa City, Akita.
1969 - Started manufacturing and sales of component parts for medical equipment.
1971 - Started manufacturing and sales of component parts
1976 - Started manufacturing and sales of phonograph parts
1978 - Started manufacturing and sales of optical equipment parts
1979 - Started manufacturing and sales of ruby capillaries
1992 - Started manufacturing and sales of touch panels
1993 - Akita Adamant Co., Ltd. was moved to Yokote City, Akita
1996 - Akita Adamant Co., Ltd., obtained ISO 9001 certification
1998 - Adamant America, Inc., a subsidiary of Adamant Co., Ltd.
2003 - In alliance with Micralyne to provide MEMS products.
2009 - Adamant Europe GmbH, a subsidiary of Adamant Co., Ltd., was established in Germany.
2013 - Adamant Headquarters, Akita Adamant obtained ISO 13485 certification
2014 - The Company Changed name to Adamant Co., Ltd.
2018 - Adamant merged with its parent company, Namiki Precision Jewel Co., Ltd., to establish Adamant Namiki Precision Jewel Co., Ltd.
Products
Photonics
Zirconia ferrule, sleeve, receptacle and connector incorporating Injection molding techniques. Lensed fiber, lens is formed on top of optical fiber which is equivalent with human hair.
MEMS (Micro Electro Mechanical System)
Started full foundry service covering development →test production →and OEM Manufacturing of MEMS in tie-ups with Micralyne Inc. in Canada. Pursuant to joint development with Micralyne Inc. for optical sensor device incorporating MEMS.VOA（Variable Optical Attenuator）and optical switch with hermetically sealed in metal package
Fine industrial jewel
Capillaries for bonding tool, wedge, also, ruby knife, pellet, dental block for medical device, physics and chemistry.
Advanced material
Variety of color Ceramics available such as White, Black, Blue and Brown. Featuring glossy by polishing finish and a high-class touch. LTCC（Low Temperature Co-fired Ceramics） are co-fired at low temp. in process which makes silver material possible in order to use as a conductor. Suited for RF products due to low loss. Also, multi-layered and flat substrate can be made easily. Highly accurate, high-density mounting are realized.
