Japanese calls Ou Gyoku. Topaz is a gem that is rich in color variations like tourmaline and garnet. In Japan, it is named as “yellow jade” and is famous as “yellowish gem”, but there are other topaz such as red, pink, orange, blue and transparent. The hardness that indicates the hardness of a gem … Read More
A stone or stone that sits at the top of the center of a brick arch. Since wedge stone contains titanium (Ti), it is also called titanium stone. Japanese calls Kusabi-Ishi. > stones stock くさびいし キーストーン 漢字
Amber is a fossil of natural resin and a gem. Semi-fossil amber is called copal, and heat-compression-molded recycled amber is called ambroid. It has been prized as a jewelery item in both the West and the East. It has a hardness comparable to that of minerals, and its color is amber, yellowish brown or … Read More
Amber is a fossil of natural resin and a gem. Semi-fossil amber is called copal, and heat-compression-molded recycled amber is called ambroid. It has a hardness comparable to that of minerals, and its color is amber, yellowish brown or close to golden. Japanese calls Ko-Haku. [Kanji] amber T-Shirts