We make jewelry so comfortable and sturdy that you’ll never want to take it off. All Nyssa pieces are expertly handcrafted using only the finest ethically-sourced materials. We’re serious about sustainability, so we only use real solid gold and sterling silver that is recycled or responsibly-sourced following Fairtrade standards.
The pureness of gold is measured in karats (different from ‘carats’ with a ‘c’) in parts of 24. Gold is naturally very soft and fragile, so alloys are added to increase its durability and hardness. 9-Karat solid gold contains 9 parts of gold and 15 parts of alloys. Extremely durable and accessible, our 9-karat gold pieces are perfect for those looking for affordable jewelry to wear every day without worrying about scuffing and scratching.
18-Karat solid gold is made of 18 parts of gold and 6 parts of alloys, making it very high in its purity. 18K is the closest you can get to pure gold without sacrificing durability and strength. With a rich yellow color, stunning shine, and a high percentage of pure gold, our 18K gold jewelry strikes the perfect balance between luxury and longevity.
Vermeil (pronounced “ver-may”) jewelry is made of solid 925 sterling silver and plated with a layer of gold. To be considered vermeil, this coating needs to have a thickness of at least 1.5 microns, and the gold used must be at least 10-karats in purity. We go the extra mile, and gild all our vermeil jewelry using 2.5 microns of 18-karat solid gold, a coating that is 50% thicker than traditionally gold-plated pieces. With a perfect balance between quality and value, our vermeil pieces make a great addition to your jewelry essentials.
While beautiful in color, pure silver is too soft to be made into jewelry. That’s why most silver jewelry is made of 925 sterling silver: a mix of 92.5% pure silver and 7.5% of other metals, like copper. While sturdier than pure silver, sterling silver jewelry without plating is still prone to tarnishing. We plate all our solid silver pieces with a layer of rhodium to keep it looking bright, smooth, and scratch-less for years to come.
All of our gemstones are genuine mineral stones. No two gems are the same, so our stones may vary in color, shape, and size and may include natural inclusions, all characteristics of working with natural materials. Each of our individual product pages for gemstone jewelry pieces will list the name, origin, and other details about the gem's properties.
Our Moyo Collection features 100% transparently-sourced gemstones that support education in Tanzania and Kenya, in collaboration with our ethical gemstone program partners, Moyo Gemstones and Anza Gems. Visit our sourcing page to learn more about Moyo Gemstones.
Nyssa only works with Akoya pearls of the highest quality. Our pearls are sustainably cultured in the Japanese Akoya oyster, a process that takes up to two years. Famed for its unparalleled luster, rich color, and perfectly round shape, the Akoya pearl is of much higher quality than other cultured pearls, like the freshwater pearl.
While there’s more to a diamond than the 4C’s, we handpick all of our conflict-free diamonds to meet or exceed industry standards. All diamonds used by Nyssa are D-I color and SI+ quality on the GIA Diamond Grading Chart, which means they’re colorless and eye-clean.
More than just the shape of your diamond, the cut is what determines exactly how your diamond sparkles. A correctly proportioned cut will return light from the top of the diamond, making it twinkle irresistibly. All of our diamond cuts are graded ‘very good’ or ‘better’ on the standardized scale.
The perfect diamond is completely colorless and graded a ‘D’ on a scale that runs through Z (light color). We only use diamonds graded Colorless (D to F) or Near Colorless (G to J).
This describes any imperfections or ‘inclusions’ in your diamond (the clearer, the better). We’ll only use diamonds graded S1 or higher, called ‘Eye-Clean’, where any inclusions are invisible to the naked eye.
Commonly thought to describe the size of your diamond, ‘carat’ actually refers to its weight. A bigger diamond isn’t always better, though. Diamonds that aren’t as colorless or well-cut can actually look smaller than what you would expect based on their carat weight
We believe fine jewelry should be worn and enjoyed every single day. The jewelry we sell requires very little care, as it’s crafted out of only the highest quality materials. Here are some tips to keep your jewelry pieces shiny for decades to come: