Chalcedony classification

A [2], or cryptocrystalline quartz, is a fascinating history of unusualminerals. Many variants of a riot of colours by the favor, they are used as ornaments and practical crafts. Nowadays, although the world of chalcedony with production and regarded as one of the most expensive gem material, but it is still more popular than the past. From the appearance, color variety of all kinds ofchalcedony, change color diversity, providing endless desire and the challenge to the amateur and rock collectors.

Agate

Agate [3] is one of the people familiar with the first batch of gem materials.

usui

Chrysoprase is a word derived from the Greek word, meaning "green and gold".

Guang Yusui

Originally known as Cornelia, has no, Cornelia from the ancient Latin word "cornum" evolved, means "horned berry" or "hornedcherry". Recent spelling Shengxing in fifteenth Century,mistakenly believe that it is the Latin word "Carneolus", according to "Carnem", meaning "flash". Legend, the red to reddish brown to orange red varieties, can dispel evil for good luck. Imagine it isweak and timid voice for courage, and large. It can prevent thesuspicion, ensure the wish come true. In this mo de, generally have red agate, probably because this mo de himself wearing atoken ring.

Carnelian

Similar to carnelian, but more and more dark brown color.Sardonyx, is SARD band and black and white layer and whiteagate, is August birthday when.

Bloodstone

(Bloodstone or heliotrope), dark - green chalcedony with red spots, is the birthstone of March, Heliotrope said the Greek word for "sun" and "direction". Bloodstone as a talisman, people think it can prevent bleeding.

On the basis of chalcedony color, pattern and internal inclusions,which can be divided into ordinary chalcedony, agate, Jasperthree. Various and multiple varieties.

(1) common chalcedony: refers to the color uniform, no patternwith chalcedony, bright colors, is also very beautiful. Much as translucent, highly textured, arts and crafts and jewelry which ispopular. Its color is white, red, yellow, brown, green and other colors. The varieties with color division of SARD, carnelian,  usui, Mo Yusui, jade pulp prase, etc.. In England and Australia,carnelian and ruby was set for July birthstone, symbolizes passion, love and dignity; jade and emerald, is scheduled for May birthday stone, a symbol of luck and happiness. Known as the"Australian jade" or "Chrysoprase" jade is Australia producedChrysoprase, the green the grass is green and luxuriant.,appearance gratifying, and emerald comparable to, the price is cheaper than.

(2) Bi Shi: refers to contain clay minerals and iron oxide minerals such as impurities in the spinal cord, also known as liver stone.The impurity content is often more than 15%. Because the impure,usually opaque or transparent, and the sheen is slightly darker than the common chalcedony. Jasper color is also very rich. The breed with color, Red Jasper, green jasper, Bai Bishi, Huang Bishietc.. In fact, blue stone often is not uniform, the color is more variable, except for a single color, often variegated varieties. Adark green to green ground color with red, red brown spotsJasper called "Bloodstone" or "Bloodstone", "blood star stone","blood", because the color contrast, visual effect is strong, very beautiful. In many countries the custom jewelry, it and aquamarinetogether was set at the March birthday stone, a symbol of calm,brave and clever. When there are more than two kinds of colorJasper form various banded or picture like pattern, are collectively referred to as the "Picture Jasper", also can be specifically divided into strip Jasper, scenic Jasper, the Bi Shi directly used asornamental stone.

(3) the agate: is concentric lamellar grain belt, parallel lines with orvarious patterns of chalcedony, usually does not contain or contain very few clay impurities. Agate tread patterns.