Editor’s Note
This data snapshot provides key metrics from the Nerima Gokai Market’s September 2025 jewelry and watch auction, including the event date, lot count, and relevant financial benchmarks. It serves as a concise reference for market participants and analysts tracking auction trends and pricing.

Bidding Data
Nerima Gokai Market Bidding Data September 2025
Market Trends / Administration / Organizations
Jewelry & Watch Auction
Event Date: September 28th / Number of Lots: 3,467
Exchange Rate: ¥149.86 per USD / K18 Gold Price: ¥14,614 / Pt900 Price: ¥7,160 per gram
September Auction Overview
“Precious Metals: Loose diamonds were traded at stable prices, depending on factors like clarity, color, and grade. Demand for melee diamonds remained high and popular this month as well. Colored Stones: Colored stones with good hues were highly popular, attracting numerous bids and active trading. Stones with superior color commanded higher prices. Due to rising gold and platinum prices, all precious metals traded at high values, but future trends are unpredictable.”
“Watches & Brand Jewelry: Trading for wristwatches in general remained at high price levels this month. Regarding Rolex, prices showed stability. Products suitable for retail were stable. Watches in the affordable price range were also stable. Brand jewelry traded at high prices with significant discounts from the retail price.”
It seems price increases are likely to continue towards the year-end.