About About NJ Auction

Serious Jewelry Auction that only Net Japan can realize.
Held few times a month in Tokyo.

About Bidding

Japan's largest Loose Diamond and Jewelry Auction held multiple times a month in Ueno, Tokyo. We welcome customers with our high-quality and wide variety of product lineup that can only be made possible by Net Japan.These events are for diamond and jewelry traders only, and membership registration is required for participation.

Many Big Buyers in and out of Japan are participating

With Net Japan's unique network and more than 10 years of solid business record since its first event, many top-class buyers from Japan and overseas are participating.

Keen eyes and wide variety of product lineup

Net Japan will meet the various needs of our customers with high-quality and diverse product lineups that only Net Japan, the industry's largest, could realize.
In addition, our experienced staff will inspect each exhibit item and provide products that are ready for immediate business in Japan and overseas.

On-Line Auction with peace of mind

On the day of the auction, buying and selling may be done in real time through our on-line auction system.
The system will allow multiple people to login which will enable you to check the trading status with your colleague at the same time.

Schedule_Outline [Jewelry Auction]

* Information are subject to change.
Please make sure to check the details from this "Event Information".

  • Registration for
    Auction Participation

    From the 25th of the month to the 2nd of the following month.
    * Participation in the auction is accepted at any time.

  • Registration for
    Exhibit Items

    [Reservation for Boxes for the Exhibit Items]
    On or before the 2nd of the month.

  • Exhibit Items Pickup /
    Collection

    Must be received by the 7th of the month,12:00 noon.

    * For product registration by Net Japan, the items must be received by 3rd of the month, 12:00 noon.
    * We welcome early submission of the Exhibit Items.
    * Open Saturdays and Sundays.

  • Preview

    From the 13th to the 19th of the month, 9:00 to 18:00.
    * Closing at 17:00 for the 19th.
    * Closing in stages based on the number of Exhibit Boxes.

  • Bidding

    [Bidding Start] the 13th 10:00
    [Bidding Close] the 20th 15:00
    [Closing Extension] the 20th 15:00〜End

    * Please check the updated "Event Information" for details such as Bidding Close time.
    * Closing in stages based on the number of Exhibit Boxes.

Schedule_Outline [Diamond Auction]

* Information are subject to change.
Please make sure to check the details from this "Event Information".
* The event dates will change for February and December.

  • Registration for
    Auction Participation

    [1st Half Diamond Auction]
    from the 27th to the 3rd of the following month.

    [2nd Half Diamond Auction]
    from the 13th to the 21st.

    * Participation in the auction is accepted at any time.

  • Registration for
    Exhibit Items

    [Box Reservation]
    1st Half : by the 3rd　/　2nd Half : by the 21st
    *Product Registration will be done by Net Japan at free of charge.

  • Exhibit Items Pickup /
    Collection

    -- Exhibit Item submission deadline --
    [1st Half Diamond Auction]
    by the 4th, 12:00 noon

    [2nd Half Diamond Auction]
    by the 22nd, 12:00 noon

    * We welcome early submission.
    * Open Saturdays and Sundays.

  • Preview

    [1st Half Diamond Auction]
    From the 8th to the 10th, 9:00 - 18:00
    Closing at 17:00 on the 10th

    [2nd Half Diamond Auction]
    From the 26th to the 28th.
    Closing at 17:00 on the 28th

    * Closing in stages based on the number of Exhibit Boxes.

  • Bidding

    　　　　　　　　【 1st Half 】　　 【 2nd Half 】
    [Bidding Start] 　the 8th 10:00 / the 26th 10:00
    [Bidding Close]　the 11th 14:00 / the 29th 14:00
    [Extension] 　 　 the 11th 16:00〜End / the 29th 16:00〜End

    * Please check the updated "Event Information" for details such as Bidding Close time.

Membership Registration and Participation Fee

  • Annual Membership
    Fee

    JPY13,200

  • Participaion Fee

    Diamond Auction (1st Half and 2nd Half) : each JPY3,000 + tax
    Jewelry Auction : 　JPY4,000 + tax

  • Handling Fee

    Seller : No Charge　 / 　Buyer: 3.5% of the winning bid price + tax
  • We welcome quick tour of the Preview. Please contact us if you are interested.