We often hear things like "Hetian jade", "Taiwan jade" and "Canadian jade". Well, names like suet white jade, jasper, emerald and jet all belong to the so-called collection of mineralogical nephrite. In China, the ancient book Jade has never been seen, and it belongs to the Department of Modern Mineralogy. Nephrite is a special amphibole mineral aggregate. Nephrite can be divided into white jade, sapphire, jasper, jet, topaz and jadeite according to its color. Different places, the difference of nephrite:.

1 Whether the color of nephrite is uniform, white, dark green, dark green, etc. , no bright green.

2。 Tian Yu is oily and shiny, and there is no emerald. Nephrite (3.00)

3。 The proportion is slightly lower than that of jadeite.

4. The refractive index of Tianyu (1.62) is slightly lower than that of jadeite.

(2) The difference between "Ma Laiyu" and jade.

In the past 80 years, a kind of jade with bright color and even green color has appeared in the jade market, and many people have been fooled into thinking that it is a "rare high-grade jade". What kind of jade is this? What is this? This is called Malaysian Jade Jade (also referred to as "Ma Laiyu"), which is its only name. Malaysian jade is not produced in Malaysia. This is a group of Indian and Pakistani businessmen selling fake jade in the name of Chinese mainland on the Yunnan border. Malay dyed green jadeite is actually a very fine quartzite, but it is obviously different from jadeite.

1 To the naked eye, Malaysian jade is too bright and unnatural.

2。 2.65 The proportion of Malaysian jadeite is much smaller than that of 3.243.43.

3。 1.55 The average refractive index of Malaysian jadeite is lower than that of jadeite.

4。 According to the Charles filter, the color of red will not change, but tiny stains can be observed at 10, that is, the color floats and there are stains.

(3) The difference between Australian jade (chrysotile) and jadeite.

Macau jade, also known as Nanyang jade, is named after its abundance in Australia. Because the color is green, it attracts people's love. It has certain transparency, fine particles and low price, which confuses some people. In fact, it is an aphanitic silica, or a stone in the bone marrow of mineralogical chalcedony. Australia is not. Strictly speaking, Yu Yu should be chrysotile. It looks like jade and emerald, but there are some differences.

Australian jadeite is uniform in color, raw apple green, rarely dark green, much like plastic.

2。 Looking at it with a magnifying glass, Australian jadeite has lost its sex.

3。 The specific proportion of 2.60 is much lighter than that of Aoyu (3.243.43).

4。 1.55 The refractive index of Australian jade is lower than that of jadeite.

(4) The difference between Dongling jade and jadeite.

* * * In the same market, a pearl with medium green (different shades) and translucent beads (occasionally carved) is favored by many ladies because of its certain green color and low price. What are the beads like? Asked the seller, he replied, "This is Dongling jade made in India." Dongling jade, also known as Dongling stone, was first born in India, also known as "Indian jade". China and Henan also exported it, which is called "Miyu", but the correct name should be Shiyaoying. The differences between Dongling jade and jadeite are as follows:

From the point of view of10 light, the green chrome mica flakes in Dongling jade are arranged in parallel. The middle and sides often form a "green line". Look at the Charles filter. It's green chrome mica red.

2。 2.65 The proportion of Dongling jade is much lower than that of jadeite. You can measure his confidence. 1.55 3 The average refractive index of Dongling jade is lower than that of jadeite.

(5) The difference between grindstone (albite jade) and jadeite.

In recent years, transparent or translucent "ice seed" jade has appeared in some big cities in Kunming, Ruili and Tengchong, Yunnan, as well as in the jewelry market and wellhead in the mainland. The overall color is white or off-white, with few white and colored stripes. The distribution of jade in Yunnan is uneven, which is called "water drop" locally and is called "blue flower ribbon". It is often processed into bracelets, pendants and sculptures for sale in the market of Taiwan Province Province. In fact, the main mineral composition of albite is "Moer", followed by a small amount of mineral pyroxene and amphibole. Easy identification can be used in the following aspects:

Enlarged observation 1: the son mill is mainly albite, with no obvious emerald, mostly white stone brain or cotton.

2 Hand-weighing method: the specific gravity of water mill (2.572.64) is much smaller than that of jade, and the empty inspiration of hand-weighing jade is obvious.

Refractive index measurement method: the refractive index of grinding (1.52 1.54) is smaller than that of jadeite.

In short, by understanding the characteristics of jadeite, jadeite can grasp the difference of similar stones.