platinum Spectacle diamond necklace from Pragnell Vintage featuring platinum, bezel setting, brilliant cut diamonds, cable-link chain, clasp fastening and polished finish. Purchasing this item continues its narrative and reduces the environmental impact by avoiding the use of new resources needed to make the product from scratch, such as water, materials and electricity, and avoiding additional manufacturing impact.. Normal everyday use and external agents may reduce the lustre of gemstones and gold surfaces. To maintain, use specific, non-abrasive products specially meant for cleaning jewellery..