These handmade recycled copper rabbit head studs would make the perfect gift for a 7th Wedding anniversary, or for anyone who loves all things wildlife, for any occasion and celebration. They will come in a gift box. Recycled Copper Clay is a clay-like material which turns into pure, solid copper when fired in the kiln. It is a mixture of micron sized copper powder, water, and organic binder. Rose gold filled ear post with notch. "1/20 14K" stamped on side. Size: 9.5mm x 0.66mm. Rose gold filled ear scroll butterfly. "1/20 14K" stamped on back of scroll. Size: 5mm x 4mm Rose gold filled is a solid layer of gold (14k) permanently bonded to a base metal, such as brass. The rose colour is obtained by alloying gold with copper. The minimum layer of gold must equal at least 1/20th the weight of the total item. It is very hard wearing and under normal wear the gold will not peel or flake, unlike gold plate. I soldered the bunny studs to the stems with sterling silver. Bunny stud measurement: Appro. x 7mm by 5mm. Earring pair Weight: 0.68g Green patina used, with a little matte medium to keep the colour lasting longer. Copper will leave a green tint on the skin after an extended time of use. Caring for your earrings: Avoid harsh chemicals. Please avoid any hard blows or rough wear. Cleanse with warm soapy water and a soft brush then towel dry. Best kept in a padded jewellery box or bag in a cool, dry place to keep them safe.