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Tag: Von Pettenkofen

  • Auction Preview

    New York City Estate Auction

    Dating back to Ancient Greece, agate is made of silica, quartz, and chalcedony. Typically formed within volcanic and metamorphic rocks, agates are found in a variety of colors and grains. The upcoming New York City Estate auction, presented by Showplace Antique + Design Center, will feature a pair of Willy…

    Boris LeBeau Platinum & 18K Diamond & Ruby Ring