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- Individual service is provided to customers making repeat visits to stores, including follow-up maintenance service.
- The utmost care is taken in providing a space for consultation where customers feel unhurried and at ease.
- In showing our appreciation, a diamond tiara is lent to customers purchasing products free of charge.

As a result of promoting the above measures, GINZA DIAMOND SHIRAISHI and EXELCO DIAMOND brands rank among the top position according to a customer purchase survey conducted by XY magazine (a major bridal magazine in Japan).
Ranking Name of Brand or Company
1st GINZA DIAMOND SHIRAISHI
2nd TIFFANY
3rd JEWELRY GALA
4th EXELCO DIAMOND
5th AI PRIMO
Survey conducted by XY magazine in 2003