When it comes to the name “vermiculite”, what kind of impression do you have to it?






Diamond substitute in the jewelry,

Artificial, deceiving

… “

Hello! The “vermiculite” you said is actually “synthetic cubic oxidation”, not the real natural vermiculite!

Synthetic cubic oxidation 方


“Natural vermiculite” has been “back to the pot” for the abbreviation of “Synthetic Cube Oxidation” for abbreviations for many years. The world often confuses the two. But in fact, natural vermiculite has good gemstone characteristics, and is a highly “cost -effective” mid -range natural gemstone.

What kind of story does “natural vermiculite” delayed by the name?

Let’s take a look at this mysterious “back pot beauty” ~

Natural vermiculite, source: GIA

This “vermiculite” is not the other “vermiculite”


[“Li Zhi”: Natural vermiculite]

Zircon is the birthstone of December, also known as 锆 锆.

The vermiculite is one of the oldest minerals on the earth. The oldest vermiculite was formed 4.3 billion years ago.


Strong luster, high color scattered, rich colors,

It is loved by the jewelry industry.

Natural vermiculite scattered value is 0.038

(Diamond color dispersing rate is 0.044). The fine -cut vermiculite usually looks full of fire, and the light is shining very much like diamonds.

Left: vermiculite, right: diamond


Natural vermiculite has been used as a long history of decoration. It was used as early as the ancient Greek period. The use of vermiculite in Greece and Italy can be traced back to the 6th century AD.

In the Middle Ages, the gems of vermiculite were considered to induce good sleep, drive away evil spirits, promote wealth, honor and wisdom.

The colorful natural vermiculite, the source of the picture


Until the beginning of the 20th century, when various imitation diamond materials were not born, colorless vermiculite was still the “excellent replacement” of diamonds.

The most common vermiculite for modern jewelry is colorless, yellow and light blue vermiculite.

Wantan ring, source: GIA

There are very few vermiculite effects or discoloration effects.

Vermiculite Cat Eye | Picture Source: GIA

Discolory vermiculite | Picture source: GIA

[“Li Gui”: synthetic cubic oxidation 锆]

Many people think that natural vermiculite is low -cost, which is misleading by the abbreviation of “synthetic cubic oxidation”.


This kind of synthetic gemstone that has been used as diamond substitutes since 1976, referred to as CZ (full name Cubic Zirconia). The cost is low, and it is very close to the diamond in optics. It has high refractive index (2.15), high -color dispersion (0.060, diamonds 0.044) and high density.


Because the Chinese name of the synthetic cube oxidation is relatively mouth, most merchants simplify its name and call it “vermiculite”, but in fact this title is irregular.

Synthetic cubic oxidation is not only used to imitate white diamonds, but also can make various colors. Advanced CZ also often uses CVD diamond plastic to increase luster.


The color of natural vermiculite

Do you think natural vermiculite is only colorless? People are actually “colorful”!

Because of the rich colors, the source of the word Zircon, the English name of vermiculite, has always been controversial. Some scholars think it comes from Zarkun, Arabic, which means “cinnabar”. Others believe that its source is the Persian Zargun, which means “golden”.

Picture source: System Gemology

The rare color in vermiculite is red, followed by pure blue and sky blue, and again colorless, orange, brown and yellow. From the perspective of market response, the most popular consumer is blue. For gem collectors, red and green stones are very attractive varieties.

Source network

【Colorless vermiculite】

Colorless vermiculite is a common variety in vermiculite, and it is also the most well -known variety. Sometimes some gray tones are mainly produced in Thailand, Vietnam and Sri Lanka.

The colorless vermiculite has naturally produced and changed from the heat treatment of reddish -brown vermiculite. It was once used as a natural imitation product for diamonds.


Colorless vermiculite, source: GIA

【Blue vermiculite】

Blue vermiculite is a popular variety in the market, and the price is higher than other colors. There are pure blue, iron blue, sky blue, light blue, slightly green light blue. It is best to use iron and blue, but not common.

Picture source: GIA


People in the Victorian era had a soft spot for the love of Lan Yanshi.


By the 1920s, due to the enthusiasm of blue gems in the market, a large amount of light brown vermiculite became glorious blue vermiculite through heat treatment. The main raw materials of thermal treatment were from the junction of Cambodia and Vietnam.

The blue vermiculite after thermal treatment, the source: GIA

【Red vermiculite】


Red vermiculite is also known as “Costume Zi Shi”.


In the 19th century Europe, red -brown vermiculite was very popular. In Europe’s “Costume” and “Yinxinzi Stone” refers to red -brown and orange -red stones. After that, these terms are applied to the names of vermiculite and other minerals with similar colors.


The red vermiculite is red, orange -red, brown red and other different tones, including pure red as the best.


It is mainly produced in Sri Lanka, Thailand, Cambodia, France, etc., and Wenchang, Hainan, China, is also produced in red.

Hyacroxinzi, picture source GIA

【Yellow vermiculite】

Yellow is the most common color in vermiculite, with light yellow and green yellow. Some golden vermiculite can be generated by heat treatment.

Natural yellow vermiculite, source: jewelry craftsman real shot

Yellow vermiculite, source: GIA

【Green vermiculite】

The green system in vermiculite is generally darker and green, and the pure and bright green vermiculite is rare.

If the stone is delayed because the name is similar to the “synthetic cube oxidation”, then the green vermiculite is even worse. In the delayed family, it is delayed again because of the color snow.

Natural green vermiculite, source: Jewelry craftsman real shot


Add a small knowledge here:

There are three types of vermiculite, which are divided into high, medium and low type according to the degree of crystallization

Essence Gem -class vermiculite is basically high -type vermiculite. Low -type vermiculite is approximately amylum. Even when it is gemyt, it is usually turbid and there are a lot of cloud -like buns.


Low -type vermiculite, map source network

Most of the low -type vermiculite is dark green, so people think that the green vermiculite thinks it is a low -type vermiculite, and it has entered a misunderstanding.

In fact, the green vermiculite is not all low -type vermiculite. The pure and bright, high -net green high -type vermiculite is a unique color in the vermiculite family, and it is also the heart of the gem collection clip.

Green vermiculite, map source network

Left: Tourmaline, right: Green vermiculite


Radiovisal radiation

Many people have heard of rumors of radiation in vermiculite, but in fact

Each of us lives in radiation.


According to the effect, radiation can be divided into two types: ionizing radiation and non -electrical ionization radiation. The radiation of people’s discussions, in fact, it should be said that it should be

ionizing radiation

And the radiation generated by common mobile phones, microwave ovens, and infrared rays in our lives, and the radiation of common gems that everyone worry about, belongs to low -energy electromagnetic radiation, and have strong ultraviolet radiation when you are in the sun.


(Related Reading:

Is gem radiation? Is it true or false?


Natural vermiculite contains radioactive elements: uranium (U) and 钍 (TH), which will produce very, very slight ionizing radiation, but will not pose a threat to health.

Depending on the degree of destruction of radioactive elements to internal structure, vermiculite can be divided into high -type vermiculite, medium vermiculite and low -type vermiculite. The use of jewelry is generally radioactive.

Natural vermiculite ring, source: GIA

Moreover, before the listing, it will be tested to ensure that the radioactive activity is lower than the residual radioactives in the national radiation protection regulations to be sold in order to be sold.

Wearing a pigeon egg size, the radioactive activity is lower than the exemption value stipulated by the state, and the radiation dose cumulative for one year is equivalent to the effective dose of your 10 -hour aircraft finger.

12.84 carat triangular cutting vermiculite; source: GIA

Wearing and maintenance of natural vermiculite jewelry


Although the vermiculite is strong, high -colored, rich in color, and good hardness, there is a fatal weakness -crispy.

The vermiculite is very crispy, and a slightly knocking out will drop a corner or even the overall division. In addition, the face edge of vermiculite is easily damaged, and it will even be damaged due to the friction with the wrapped paper. This phenomenon is often called “paper erosion effect”.

Therefore, it is necessary to wrap the floppy paper when packaging is packaged; the vermiculite jewelry must avoid bumps and impacts in daily wear, and place it alone when not worn. Do not throw a bunch of other jewelry.

Natural vermiculite, source: jewelry craftsman real shot

Mr. J said:

The rich color, dazzling, pure and translucent natural vermiculite is a beautiful colorful gemstone that is “misunderstood” due to the name. Compared with the horizontal direction of gems similar to physical properties, its price is also very reasonable. For gem collection enthusiasts, gathering different colors is a pleasant process.

Which of the various colors of natural vermiculite do you prefer? Come and leave us a message ~


*Zhang Beili “System Gemology”

*[Mei] George .e. Harlo “Gem and Crystal”

*GIA Information

(Note: This article is distributed from the network. If there is any infringement, please contact the editor’s remarks or delete ~)




Synthetic cubic oxidation 方

Synthetic cubic oxidation 方


Natural vermiculite, source: GIA


Natural vermiculite, source: GIA


Source network

Source network

Picture source: GIA


Picture source: GIA