Semi-precious stones and freshwater pearls are crocheted with precious metal wire creating wearable art necklaces. If you prefer another choice of stones, you may specify that as well. Most of my designs are available in argentium sterling silver and 14 kt. gold-filled.
The argentium sterling silver is highly tarnish-resistant. Made with a touch of germanium, it has the look of white gold without the price. The 14kt. gold-filled that I use is called 14/20. A thin layer of solid 14kt. gold is heat and pressure bonded to an inner core of brass. Everything you touch is solid gold and therefore will not tarnish. Once again, the look of solid gold at a fraction of the cost.