Massive Dweck Ring. Gold Vermeil over Sterling silver, Parrot Jasper stone. Dated 1992 in the Shank, Hallmarked Sterling, Signed Stephen Dweck. Measuring a whopping 1.25in. top to bottom x 1in. wide x .50 high. Stephen Dweck has long drawn his inspiration from the wealth of materials found in nature. He collects stones from all over the world tourmalines from Brazil, boulder opals from Australia, ammonites from Morocco, and pearls from the South Sea. In the past 24 years, he has created an extensive gallery of stones and minerals.