Christmas Tree Pin Brooch 925 Sterling Silver English Hallmarks Set With Green and Brown Crushed Opal Resin And Crystals. A unique festive brooch to adorn your coat or bag, or to add to any brooch collection, our brooches are handmade in Britain by top Silversmiths using hallmarked sterling silver. Designed in London, our sterling silver Christmas tree brooch is lovingly set with green and brown crushed opal resin and finished with sparkling crystals. A Limited Edition piece with only 3 pieces available. 925 sterling silver Christmas tree pin brooch. Set with green and brown crushed opal resin. Limited Edition of 3 pieces. Supplied in a Gift Box with a Certificate of Authenticity. Comes complete with a silver care kit. Dimensions: 37mm x 20mm.