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The name of hypersthene comes from the Greek words Huper (super) and Sthenos (strength), meaning that the hardness is greater than that of ordinary hornblende once mixed with it. Because of its polychrome, it is very similar to the leaf color of the plant perilla: the...

Hemimorphite is a rare gemstone, mainly produced in the oxidation zone of lead-zinc deposits. They are secondary oxidation minerals, most of which occur as veins. It usually produces in limestone and coexists with sphalerite, smithsonite, galena, limonite, etc. The...

In the early years, mineralogists called it "BlueCordierite". Later, gemologists called this mineral as Iolite. This purple crystal is transparent to opaque. It has extremely strong dichroism, also known as "dichroic stone". It has strong polychrome. It is blue purple...

Chrysocolla is the alteration product of copper mineral and is a kind of hydrous copper silicate mineral. The monoclinic system has very few crystals, which are usually amorphous colloids, and are produced in the form of stalactites, earth or dyes in quartz, often...

Moonstone is a variety of orthoclase, mainly composed of orthoclase and albite, which are layered and interactive gem minerals, usually colorless to milky white. Most of them are translucent and glassy. On the gem's surface, you can see the floating flash of milky...

The name of Kunzite comes from the American gemologist G.F. Kunz, who first mentioned this gem in 1902. Kunzite has strong pleochroic and can observe different colors at different angles. The color of Kunzite is light, and the chromogenic element is "manganese". Its...

Chiastolite is a variety of andalusite. Let's first look at what is andalusite? The chemical formula of andalusite is Al2 [SiO4] O. AI in the composition can be partially replaced by Fe and Mn, and Ti can slightly replace Si. When the content of Mn2O3 is high (about...

To understand the Angelite stone, let's first understand what anhydrite is. What is anhydrite? Although gypsum and anhydrite are different minerals, they can be mistaken for the same kind by name.  Because they are one of the main minerals constituting the...