You get the idea why this ring is called Throne, my lord/lady. Material: 925 sterling silverStones: Ruby (Lab-grown)Weight: 5.5 grams Ruby specifications:Carats: 0.06 "Lab-grown" refers to gemstones that are created in a controlled laboratory environment, replicating the natural processes that occur in the Earth's crust. These lab-grown stones have the same physical, chemical, and optical properties as their natural counterparts, offering a sustainable and ethical alternative to mined stones. PACKAGING Every order comes with a Kuurth's sphere and an owner's guide. SIZE GUIDE - The ring should fit you comfortably; it should be tight enough not to fall off but loose enough to slide over your knuckle. - Measure the circumference of the finger where you are going to put the ring with a sewing meter, if you do not have a sewing meter you can cut a strip of paper, surround the finger with the strip and make a mark. - Then measure that section of the paper with a ruler or tape measure, the measurement you get is the length. - Measure the finger a couple of times to avoid mistakes. OUR SIZE DIAMETER LENGTH XS 16 MM - 0.629 INCH 50 MM - 1.968 INCH S 17.3 MM - 0.681 INCH 54.34 MM - 2.139 INCH M 18.5 MM - 0.728 INCH 58 MM - 2.283 INCH L 19.7 MM - 0.775 INCH 61.8 MM - 2.433 INCH XL 21 MM - 0.826 INCH  66 MM - 2.598 INCH