This is a Hidaka Jade bracelet, a combination of genuine (10mm) and B-grade (8mm) beads. It includes beads with chromium and high-quality, translucent beads, and has a beautiful luster and smoothness. Hidaka Jade is a green gemstone from Hidaka Town, Hokkaido. It is a type of chrome diopside (chrome diopside), but has a structure similar to jade, and its green beauty, luster, and transparency are as good as jade, so it is called the "third jade". Jade is divided into two types: hard jade (jadeite) made of jadeite and soft jade (nephrite) made of amphibole, but Hidaka Jade is a new type of jade that is neither of these. The base green color of Hidaka Jade is due to chromium, but it also contains minerals such as uvarovite (dark green), chrome spinel (black), and pectolite (white). It has a swirling marble pattern, a dotted pattern like finely scattered paint, and these unique patterns are also one of the attractions of Hidaka Jade. The existence of Hidaka Jade became known in the late Showa era, but it was actively mined for use in jewelry, and was almost completely exhausted in just five years. Therefore, it is now highly valued as a "phantom jade". The beads are purchased and assembled from a reliable shop in Hokkaido that polishes and processes them in-house. Genuine beads 10mm B-grade 8mm Inner diameter 16cm #HidakaJade #HokkaidoStone #DomesticStone #Jade Material: Natural Stone