The origins of Blue Rough Diamond
Blue Rough Diamond represents the earth.
It takes a myriad of miracles for the earth to produce a diamond in the rough.
Our work aims to express these rare qualities.

The origins of Ti-qinq
The Y from the designer's name, Yukio, is the 25th letter of the alphabet.
In Latin, 25 is viginti quinque. Shortened, this makes the new name Ti-qinq.

Designer's Profile
2008 February: Exhibited at the D and A Exhibition in New York
March: Exhibited at the PLUG IN Access exhibition, a joint fashion
accessory exhibition
2007 March: Collaboration with mastermind, the Japanese fashion brand
　　　　　　　 Held an exhibition in Paris
May: Featured in Sense, the Japanese fashion magazine published by Roundhouse
September: Original Jewelry Accessory
Inauguration of Blue Rough Diamond / Ti-qinq
October: Exhibited at the PLUG IN Access exhibition in Tokyo
2006 June: Collaboration with the Japanese fashion brand mastermind
　　　　　　 Held an exhibition in Paris
June: Inauguration of the Ginza branch of Barneys New York in Tokyo
　　 December: Collaboration with the Japanese fashion brand mastermind
　　　　　　　 Held an exhibition in Paris
June: Inauguration of the Shinjuku branch of Barneys New York in Tokyo
September: Inauguration of
Start of edit.for. LuLu by BAYCREW*S Co., Ltd.
　　 October: Start of Original Equipment Manufacturer (OEM) contract
2004 February: rooms.08 , a joint fashion exhibition, held early in the season in
Tokyo. The exhibition has been held twice a year since 2000 with
the aim of showcasing developments in Japanese fashion and
design to the world. Many brands from Japan and overseas participate
at each event. Exhibitors participate on the basis of their
creativity and originality.
May: Featured in the spring edition of JUCCA published by Bunkasha of
JapanJune Exhibited at the Daikanyama Collection joint fashion
exhibition in TokyoAugust Exhibited in the September edition of
Japanese fashion magazine Vingtaine
September: Exhibited at the rooms.09 exhibition
November: Featured in the January edition of fashion magazine InRed
published by Takarajima of Japan
2003 March: Inauguration of Original Jewelry and Accessory: Ti-qinq
November: Start of an exhibition planned by the Shinjuku branch of
Barneys New York in Tokyo (Announcement of a new line)
November: SPIRALMARKET (Original exhibition was held from November 19
through December 29)
November: Accessory shop rooms 3d (Original exhibition was held from
December 1 through January 31, 2004)

After high school, I studied architectural design at the Tokyo Design Academy.I gained design
experience by creating exhibition venues for clients like the Yamaha Motor Show, Yumi Katsura
Bridal, TOC, as well as interior design for stores and company logos. I also gained broad experience
in the planning and design of consumer hair care products and advertising, using various media like
pamphlets, magazine advertisements, jingles for radio programs, and television commercials.

After learning the techniques of jewelry making at Hiko Mizuno College of Jewelry, I produced
antique-style jewelry at an atelier in Tokyo. After meeting an antique restorer from Italy, I studied
the art of restoration and studied jewelry polishing at the Akasaka Jewelry Design School in Tokyo.