Material: Gold, K10 Size: 13.5 This is a K10 dumortierite in quartz ring. I ordered this ring from filmingon, who is popular on Instagram. The stone setting has a lace-like design. There was originally a small crack or scratch, but it's been cleverly covered by the setting, and it looks wonderful. The size is 13.5. The carat weight is approximately 4ct. Measured with a general scale, the center stone is about 14 x 11 (mm). The dumortierite was purchased from 夕星庵-Venus Crystals, which is famous on Instagram. It's difficult to see in the photos, but there's a lot of dumortierite inside, and it looks like the deep sea, very beautiful. The inclusions in the actual stone are a slightly brighter blue than in the photos. I've used it a few times and really loved this ring, but I don't think I'll wear it anymore due to my age, so I'd like to pass it on to someone who will appreciate it. Please feel free to ask any questions in the comments (^^) For those who like stones like tatsuo nagahata, Bizoux, Harikah, irodoristone, Gstv, Star Jewelry, MARIHA, etc. Those who prefer K18 or platinum are also welcome to consider it. #dumortieriteinquartz #filmingon #firuminyon tatsuonagahata agete ahkah Star Jewelry ete hum monaka jewelry mariha Marie Helene de Taillac マリエレーヌ (Marie Helene) ARTIDA OUD アッシュペー (H.P. France) Natural stone Antique jewelry Ring Earrings For those who like these items.