Editor’s Note
**Editor’s Note**
Two rare Tiffany & Co. diamond rings, valued at ¥181 million combined, are now on display at Yohkichi Ginza Central Street Store. Featuring diamonds over 5 carats—a rarity in Japan—the collection underscores the growing secondary market for luxury jewelry. Yohkichi Group guarantees authenticity and offers free expert appraisals, reinforcing its commitment to quality and transparency.
Two large diamond rings from Tiffany & Co. have arrived at the newly opened “Yohkichi Ginza Central Street Store” operated by Yohkichi Group Co., Ltd. These rings have a combined value of approximately 181 million yen, with diamonds exceeding 5 carats being extremely rare even in the domestic market. The collection includes a 6.12-carat cushion-cut diamond and a 5.75-carat emerald-cut diamond, both of which are authentic and come with a guarantee of genuineness. As the secondary market for high-end jewelry expands, the opportunity to examine these pieces in person is invaluable, and the Yohkichi Group ensures their quality. Additionally, the store is strengthening its purchase service for luxury brand jewelry, offering free appraisals by expert gemologists.
The two large diamond rings now in stock have a combined list price of approximately 181 million yen, broken down as follows:
– **Brand:** Tiffany & Co.
– **Item:** Diamond Ring
– **Cut:** Cushion Cut
– **Carat:** 6.12 ct
– **Reference List Price:** Approximately 95 million yen
– **Selling Price:** ASK (Please inquire)
The cushion cut is characterized by its rounded square shape and soft brilliance, and a size exceeding 6 carats is an exceptionally rare piece even within Tiffany & Co.
– **Brand:** Tiffany & Co.
– **Item:** Diamond Ring
– **Cut:** Emerald Cut
– **Carat:** 5.75 ct
– **Reference List Price:** Approximately 86 million yen
– **Selling Price:** ASK (Please inquire)
The emerald cut is admired for its serene, transparent brilliance created by step-cut facets. This large size also attracts significant attention from an asset value perspective.
In recent years, the secondary market for high-end jewelry, in addition to luxury watches, has been expanding rapidly. Demand for large diamonds as “real assets” that hold their value globally is increasing. Since purchasing from authorized retailers often requires long waiting periods or purchase history, the opportunity to see and consider these items in person at a store is extremely valuable.
The Yohkichi Group has achieved cumulative sales of 235.6 billion yen over three fiscal periods in the luxury watch reuse business, and it is applying its expertise in appraisal and authentication to the jewelry field. At the “Yohkichi Ginza Central Street Store,” which opened on June 16, 2026, the group offers authentic pieces from five maisons—Harry Winston, Graff, Tiffany & Co., Bvlgari, and Cartier—all with a guarantee of genuineness. These two large diamond rings are positioned as flagship items.
Furthermore, the Yohkichi Ginza Central Street Store is strengthening its purchase service for high-end jewelry, offering free in-store appraisals by expert gemologists. Large diamonds and rare stones are also eligible for high-value purchases, making it convenient for those who wish to assess the asset value of jewelry they own.
The arrival of Tiffany & Co.’s large diamond rings at the Yohkichi Ginza Central Street Store is a significant event for jewelry enthusiasts and investors. The secondary market for high-end jewelry is expected to continue expanding, providing more people with opportunities to appreciate its allure. The world of high-end jewelry constantly offers new discoveries and value, raising expectations for the future.