Natural coral faceted, using high-tech laser technology, which it has such a very precise cut. Length: 45 cm to 49 cm / Width: 8,0 mm Weight: 32,2 grams It is believed that certain gemstones and minerals have beneficial health and spiritual properties. Catawiki cannot guarantee or be held liable for these suggested attributes which have no scientific evidence and cannot be considered a substitute for traditional medical treatment. Natural gem corals are found in the Mediterranean Sea, Persian Gulf, Australia, Japan, Malaysia, Korea, Hawaii, China, and Ireland. Gem coral ranges from semi translucent to opaque and occurs in white, pink, orange, red, blue, violet, golden, and black. A pale, rose-colored coral from Japan is called "boke."The most valued type of coral is the noble red coral (Corallicum rubrum). The color is uniform throughout the branch, from soft pink to dark red, sometimes white or pink spotted. The red color is caused by iron oxide or may be organic partly or both. "Arciscuro" or "Carbonetto" is an Italian color grade classification for very dark red coral. "Blood coral" is a term used for intense precious red coral. Other red classifications include "Pelle d'angelo" which is rose-red, "Rose pallido" a pale rose color coral, "Rosa vivo" a bright rose, "Secondo coloro," which is salmon rose, and "Rosso scuro," a dark red.This coral you buy is "Secondo coloro," which is salmon rose, so is (Corallicum rubrum) but I really don't know what sea it's from. The beads are very highly polished and have a very nice shine and a vitreous luster, so it is hard and Bamboo coral is very soft.In the unworked state, coral is dull or has a waxy luster, but when polished has a vitreous luster. It is usually found on the coasts of the Mediterranean, Bay of Biscay, Canary islands, Midway Islands (Japan). Bamboo coral, a commercial term for coral suitable for jewelry, is fished from the waters of Tasmania, Australia and has a structure similar to bamboo. Shipping registered.