Sarah Loertscher / Tessa Blazey / Theresa Mink
Aptly, these scratched-surface rings merely scratch the surface of Sarah Loertscher's portfolio (some of which I've shown, above left). The Seattle artist, also known as lucymachine, draws inspiration from crystalline structures when working on her steel, silver and gold pieces.
Above: for more crystalline structures, check out these "mineral specimen" rings in pyrite by Australia's Tessa Blazey.
Even more jewellery: