Removable Rose Amethyst Pendant Set in Sterling Silver. Fantastic Modern Bicycle Chain in Sterling silver. Dated 1997. 17in. long chain. Pendant is 1.25 in. x 2 in top to bottom of pendant. Heavy substantial Necklace #New-2115 New Old Stock Stephen Dweck. Stephen Dweck has long drawn his inspiration from the wealth of materials found in nature. He collects stones from all over the world tourmaline’s 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.