[6] Stefan Hemmerle in 1995 designed a ring for the wife of a Munich art collector, in response to her practice of wearing Berlin iron jewellery (which Germans received in exchange for donating their gold and silver jewels toward funding the War of Liberation).
[9] Hemmerle jewellers use gemstones including orange-pink sapphires, green diamonds or conch pearls,[10] often set in unorthodox materials such as copper, steel or wood.
Hemmerle's styles include the tassel earring, created using a traditional Austrian technique of knitting together cut stones often in bright colours into invisibly stitched strands.
[14] Hemmerle's Harmony bangle was included in the permanent collection of the William and Judith Bollinger Jewellery Gallery at London's Victoria and Albert Museum in October 2010.
[16] Hemmerle's Harmony bangle, Egyptian Story, 2012, became part of the permanent collection of the Cooper Hewitt, Smithsonian Design Museum in New York City in January 2013.
[17] In 2014 the company designed a jewellery collection titled Nature's Jewels consisting of twelve brooches, two pairs of earrings, a necklace and a ring, with themes of fruits, seeds, leaves and trees.