Who is WP Diamonds?

WP Diamonds is a leading global buyer of diamonds, jewelry and luxury watches. With offices in Tokyo, New York, London, Hong Kong, we work with hundreds of customers on a daily basis from around the world. We believe that selling your luxury goods should be fast, easy and secure. Our service is designer to deliver just that: a streamlined, reputable and high-end service.

What do you buy?

We buy natural diamonds of 0.25ct and larger, designer jewelry from brands such as Tiffany and Cartier, as well as luxury watches from brands such as Rolex and Breitling. Any questions? Simply contact our team in Tokyo by emailing

What is my diamond ring worth?

The value of your diamond ring will be based on the following criteria:

  • CARAT GRADE: The carat weight of the diamond
  • COLOR GRADE: Ranging from D (best) to Z (worst)
  • CLARITY GRADE: If there are any blemishes in the stone and the severity of them
  • CUT GRADE: How well cut the diamond is
  • SHAPE: Round diamonds are the most popular and worth more money than fancy shapes such as radiants or ovals.

To get an accurate price quote for your diamond ring, complete our online form and our diamond experts will be in touch.

Do you buy the precious metal my diamond is set in?

Yes. We will pay competitive prices for the gold or platinum your jewelry is set in.

Will you take the diamond out of my ring?

We rarely do and always ask the permission from our clients in these scenarios. All diamonds are returned to their settings by expert jewelers if we need to return your ring.

What if I don't know what kind of diamond I have?

The first step is to look for any diamond paperwork you may have: a diamond grading certificate or appraisal will contain some relevant information. Alternatively, schedule your appointment with WP Diamonds’ gemologists in Tokyo, Hong Kong, NYC or the UK.

Do you buy non-diamond jewelry?

Yes. We buy non-diamond designer jewelry from brands such as Tiffany, Cartier, Harry Winston, Van Cleef & Arpels and many more.

Contact Our Experts in Tokyo

Have any questions? Please feel free to contact us with any further questions or concerns. Call us on 03-6689-3653 or email Our offices are open Monday-Friday.

CALL 646-758-0270

Our service is free of charge, with no hidden costs or commissions deducted from your final price.