Prehistoric rocks symbolizing hope and love.

Prehnite is mostly green, with raised color blocks on the stone surface, which looks like grapes, hence the name prehnite. Prehnite is round and smooth, glittering and translucent and lovely, especially the contrast between particles and background color is obvious, the particles are large and round, and the relief shape can also form graphics. Because of its spirituality of protecting body, beautifying face and gathering wealth, it is called "stone of hope".

Their shapes are plate-shaped, sheet-shaped, grape-shaped, kidney-shaped, radial or block-shaped aggregates. Prehnite with good quality can be used as a gem, which is called the emerald of the Cape of Good Hope. Common colors: white, light yellow, meat red and green, and light green and golden yellow are often the most precious. Transparency: transparent to translucent. Gloss: glass luster. Optical characteristics: anisotropic body, biaxial crystal, positive light, often heterogeneous aggregate. Refractive index:1.616 ~1.649 (+0.016, -0.03 1), and the measuring point is often 1.63. Birefringence: 0.020 ~ 0.035, and the aggregate is unpredictable. Polychromaticity: None. Ultraviolet fluorescence: None. Absorption spectrum: 438nm weak absorption band. Special optical effect: cat's eye effect (rare). Chemical composition: Ca2Al(AlSi3O 10)(OH)2, which may contain elements such as iron, magnesium, manganese, sodium and potassium. Chemical classification: silicate. Crystal system: orthogonal crystal system. Crystallization state: Crystalline aggregates, often in the form of plate, sheet, grape, kidney, radial or block aggregates. Cleavage: a set of complete to medium cleavage: perfect cleavage; Moderate cleavage,

Collections are usually invisible. Fracture: serrated fracture. Mohs hardness: 6 ~ 6.5. Density: 2.80g/cm3 ~ 2.95g/cm3. Others: crisp. It has the same texture as Jinshui Bodhi, but its hardness and optical effect are not as good as the former.

Prehnite is a silicate mineral with yellow-green as the highest grade, and white and colorless minerals are also very popular. Due to the low output, the price is generally more expensive.

Prehnite was originally an overseas gem with the English name of prehanite. It was named after the discovery by Colonel von Pulen during the Dutch colonial period, and it was named in memory of Mr. Wang who brought this mineral from the Cape of Good Hope in Africa to the United States. The market is also called "green durian".

It is a symbol of unconditional love, which can improve people's visualization and promote deep meditation connected with the true self.

When you become negative because of setbacks, wearing prehnite can enhance your perseverance, improve your patience and guide you to achieve your goals. Therefore, it is also called the stone of hope. Legend has it that Gypsies are an ancient wandering people full of mystery, proficient in divination and witchcraft. Usually, before divination, they will wear prehistoric rocks to improve their perception of the unknown world. In other western countries, prehnite is called the jewel of prediction, which can enhance the sixth sense, help to communicate with the outside world and enhance the ability to predict the future. This cast a mysterious veil over prehistoric rocks.

High-quality prehnite will produce "fluorescence" similar to glass jadeite, which is very beautiful. Its price evaluation criteria are clean inside, pleasing to the eye in color and large and round particles. In recent years, prehnite has been deeply loved by designers all over the world, mainly because prehnite has the most advantages among many natural gems with similar jadeite appearance. The texture is transparent and delicate, elegant and light green, crystal clear, all like the appearance of top-grade ice jadeite, and the price is economical and affordable.