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Deborah Mazza

Auctioneer Gemstones

It’s fantastic how gems are associated with so many aspects of our culture.

Deborah Mazza

Deborah Mazza has always been interested in gems, but she only thought of making a career of it when a local professor gave a seminar on evaluating gemstones. Pretending to be 16 to get in, Deborah decided that this is what she wanted to do. Without hesitation, she chose to study gemmology in Germany and took further courses to continue her education. Deborah has worked with gems her whole life, as an appraiser, and also as a sales manager for large international companies such as Idar-Oberstein in Germany, one of the major centres for gemstone trading in the world. She knows the world of gemstones and jewellery through and through.

Over her lifetime Deborah has assessed thousands of gems and pieces of jewellery. Thanks to this experience she is able to assess these same items for Catawiki based on photographs. If there is any doubt, she consults her colleagues and always requests a certificate of authenticity. Deborah believes that one of her main responsibilities is ensuring that her auctions are put together well and are correct down to the last detail. In fact, she herself is a real gem as Catawiki continues to expand internationally.

  • 30 years' experience in gemmology
  • Studied gemmology with several follow-up studies
  • Had her own appraisal business
  • Worked as a teacher, an appraiser and in the international jewellery trade

Closing today

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How to sell through Catawiki

  1. 1. Seller registration

    Register for seller privileges free of charge. You can offer up as many objects as you wish with a minimum estimated value of 75 euro.

  2. 2. Submit items

    Once your items and descriptions have been approved by our auctioneers, they are scheduled for auction.

  3. 3. The thrill of auction

    Experience the excitement as bidders from all over the world place their bids on your submitted items!

  4. 4. Make money safely

    You won’t be asked to ship your items until the buyer has transferred payment. Catawiki manages payments between buyers and sellers.

The advantages of Catawiki’s auctions

  • High revenues

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  • Secure payment format

  • International bidding audience

  • Auctioneer supervision

  • Optional reserve price for expensive items

  • Professional customer service

  • User friendly

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