Material Guide
Materials & Care Guide
At Kosiner Jewelry, we prioritize your comfort and safety. All our jewelry is 100% free from nickel, lead, and cadmium, ensuring a refined and hypoallergenic experience through sustainable craftsmanship.
Titanium
Crafted from medical-grade titanium, these pieces are specifically tailored for sensitive skin. Our flat-back earrings offer lightweight strength and corrosion-resistant comfort, making them ideal for long-term, effortless wear.
18K Gold & Rose Gold Plated
Featuring a 925 Sterling Silver base, our plated jewelry is enhanced with an e-coating for lasting brilliance and hypoallergenic comfort, delivering affordable elegance for any occasion.
925 Sterling Silver
Composed of 92.5% pure silver and a 7.5% copper alloy, our silver is made from 95% recycled materials. Each piece is stamped with "925" to guarantee authenticity and a brilliant, durable shine.
14K Gold
Our 14K gold offers a warm, durable hue designed for daily luxury. We use a blend of 90% recycled and 10% responsibly sourced gold to ensure beauty with a conscience.
Vermeil
Gold Vermeil features a thick 2.5-micron layer of 18K gold over a sterling silver base. Made with 95% recycled materials, it perfectly mirrors the warm tones and longevity of solid 18K gold.
Lab-Grown Diamonds
Created via CVD technology, our diamonds feature VS clarity and F–G color. They match the physical brilliance of natural diamonds while significantly reducing environmental impact.