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kashikey

Kashikey Co., Ltd. 2-19-3 Shinbashi Minato-kuTokyo 105-0004 JAPAN

Customer Service
TEL:0120-106-503
M–F 9:30–18:00 (JST)
Closed on Saturday, Sunday, and National Holidays



Kashikey Co., Ltd. was founded in 1928.
It is a company offering both loose diamonds and jewelry.
We purchase high quality loose diamonds through our network of world-class suppliers,
and supply them to major Japanese manufacturers.
Kashikey has built a reputation as a leading diamond dealer in Japan.

Over the years, Kashikey has dedicated itself to promoting diamonds,
and has received many commendations and awards in Japan
and overseas for its achievements and contributions.
Its strict and thorough quality control made possible by in-house expert staff,
and extensive collection of gemstones, are products of in-depth know-how
and experience acquired over its heritage of more than 90 years.