Office Relocation Notice

  1. 合成ダイヤモンドやCBN(立方晶窒化ホウ素)輸入・販売のグローバルダイヤモンド
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  4. Office Relocation Notice
 Dear Customers,
 Global Diamond Co., Ltd. is pleased to announce the relocation of
its head office on  May 11, 2015 to follows;
 Kojimachi Square Plaza 5FL, 2-4-11 Kojimachi Chiyoda-ku, Tokyo,
 102-0083, JAPAN
office map
Tokyo Metro, Yurakucho-line (Line Y), ”KOJIMACHI” (Y15) stn. Exit1
               Tokyo Metro, Hanzomon-line (Line Z), "HANZOMON"(Z05) stn. Exit3a

  Please note that our phone and fax numbers have also changed as of May 11, 2015.
  TEL (+81)3-62568833
  FAX (+81)3-62568831
 If you have any questions regarding the relocation of our offices,
please contact; 
 Sincerely yours, 
 Go Kosugi
 Managing Director
  • GLOBAL DIAMOND   Please contact us by Telephone or Inquiry Form(Website).
  • Telephone Inquiry
  • tel(+81) 3 6256 8833
  • Website Inquiry
  • contactl