About Us: Our SISGEM Jewellery is birth for fine & high jewellery, collect best materials and best stones from worldwide, handmade by senior craftsmans, provide the beautiful jewellery to worldwide people. High-Grade Gemstone & Material: We have firm cooperation with high-level gemstone of origin and all our designs will use them. When we put the designs coming true, we will use the S925 sterling silver or solid gold completely, no stainless steel, no poor-quality plated, no hollow gold, or no filled gold. We Wish: Our jewellery can join in your daily life, attend each important moment in your life, become a part of your memory. One Engagement Ring Is One Lifetime Promise of Two People. When you choose the rings style, you can choose those meaningful shapes, such as infinity pave, split shank, etc. Our Diamonds Colour: The D colour is the highest level in this standard - most of our diamond rings are used F/G colour diamonds to make sure the rings have well value.Clarity: We use at lease SI level clarity diamonds - fewer inclusions mean better clarity and better brilliance.Cut: Our diamonds always keep the perfect balance of crown and pavilion - good cutting is the basic of beautiful fire. Size Chart How to measure your ring size a) String/Paper: 1. Using the string/paper twine the ring finger; 2. Make a mark in the circle end; 3. Measure the string/paper by ruler and refer the 'Circumference'. b) Other Rings: 1. If you have other rings, just measure their inside diameter of hollow from edge to edge. 2. And then, please refer the 'Diameter'. Note: To save time, we strongly recommend that please make sure your ring size first, then, place the order from us. Maintenance Guidelines Avoid perfume, lotion, sunscreen;Away from collide, grind or fire;Don't clean the jewellery with chemicals;Use the soft cloth to clean.