
End-member of garnet solid solution. It is one of the most beautiful members of the garnet family. This is because it has greater light dispersibility than diamond. They come in a variety of colors, but the most beautiful ones are yellow, yellow-green, and emerald. It is common in skarn and limestone Hornfels. A stone … Read More

IT terms have been converted into kanji. The act of saving copies of computer data and programs on another hard disk or other storage device in preparation for unforeseen circumstances such as damage, theft, or loss. It can also refer to the copied data or programs themselves. There is no kanji representation for “backup” … Read More

Explanation of Chalcedony A mineral made of extremely fine granular or fibrous quartz. It may also contain a mineral called moganite, which is polymorphic to quartz. There are various colors such as colorless, red, orange (daidai), green, yellow, and black, and there are various variant names. Some are used as decorative stones such as … Read More

Topaz, the birthstone for the month of November, is a beautiful transparent orange-yellow, and its color has been compared to sherry. It is a typical yellow gemstone, and perhaps because of this, jewelry with a yellow color is often given the pseudonym “topaz”. In fact, topaz is a gemstone with a great variety of … Read More

Description for Amber Fossilized resin from pine trees. Amorphous, resinous luster, transparent to translucent, yellow or reddish-brown. Specific gravity 1.04–1.10, hardness 2–3. Softens at approximately 150°C and melts at 250–300°C. Becomes electrically charged when rubbed, attracting fine dust. Used as an ornamental stone since ancient times. Pieces with high transparency, especially those containing fossilized … Read More











