Grape Agate

7/28/2015 20:25 Read 55,869 views

Discovered in 1995, grape agates are the product of volcanic eruptions under the sea 200 million years ago and are colorful in rusty red, purple and transparent.

Grape agate Characteristics: resembles bunches of grapes Color: rusty red, purple and transparent.Hardness: 6.5-7 Transparency: translucent Origin: north of Alashan Su Servo.

1,What is grape agate?

What is grape agate

Grapevine agates are the product of volcanic eruptions under the sea 200 million years ago, and they are colorful, rusty red, purple and transparent.

These natural agate spheres pile up on each other like bunches of grapes, thus giving this desert stone its reputation as grape agate. What is even more rare is that some of the grape agates also have a few agate beads that look like fish eyes. Since people discovered grape agate stone in 1995, this peculiar stone has quickly become popular in the collecting and stone appreciation circles.

Grape agate stone, produced in the area of Su Servo, Alashan League, Inner Mongolia. The stone is as hard as jade, with a Mohs hardness of 6.5 to 7 degrees, crystal clear, colorful, light red to dark purple, translucent, and peculiarly shaped. The stone is covered with colorful, different sizes, natural bead-like agate spheres, piled up on each other, flowing beads hanging jade, as if bunches of grapes, so the name. Some stones occasionally have agate beads like fish eyes.

Grape agate stone mostly exists in the volcanic eruption rock piles, and the grape agate stone beads picked up from the beach are large and pure, jade transparent and warm; those extracted from the rocks are not sharpened by wind and sand, so the stone skin is not smooth and needs to be dipped in oil to show the beautiful skin. Grape agate stone is a new stone species found in the 1980s in Alashan, due to excessive mining, it is now difficult to find.  

The composition of grape agate stone is mainly silica, formed in a large cavity near the crater, silica gel hydrothermal fluid can not fill the whole space, that is, a quality point such as sand, mud, water droplets coalesced into beads spherical or droplet-shaped, the later attached to the beads formed in the first, or hanging on the top of the cave, or long in the bottom of the cave, or hanging on the cave wall, the longer the larger, constitute a string of grapes. In the long years since then, the cave was filled with clay, so the grape agate is mostly buried in the mud, which also plays a very good protective role. Grape agate is a unique stone in Inner Mongolia and is very rare due to the harsh conditions of its formation.

Grapevine agate, together with wind lingstone and desert lacquer, is called "the three best of the desert" and has high collection value and appreciation, which is loved by people.

2,Price of grape agate

Grape agate is a special kind of agate, a new stone species discovered in the 1990s, unique to China, and has not been found in other countries and regions in the world.

Because of its unique magic and beauty, it was favored by many stone lovers once it was unearthed and became a sensation in the stone world. Many collectors at home and abroad spared no expense and went to great lengths to collect it. But I Gonsu Servo's grape agate stone mining only 10 years of time, the resources have been facing depletion, mainly because of the limited resources and barbaric mining two reasons.

Because the limited resources are close to depletion, and the grape agate stone becomes rare and precious, the price of grape agate stone is naturally not low.

Price of grape agate

3,Grape agate origin

Grape agate stone is mostly produced near the crater 20 km north of Su Servo in Alxa, the north side of the volcano has agate, jasper and other high silica stones, the original grape agate veins near the crater are mostly deep in the basaltic voids wrapped by white powdery high territory, the shape, color and bead size of the produced stones are basically similar.

Grape agate stone mostly exists in volcanic eruption rock piles, and the grape agate stone picked up from the beach is large and pure in color, jade and warm; the one extracted from the rock is not sharpened by wind and sand, so the stone skin is not smooth and needs to be dipped in oil to show its brilliant skin. Grape agate stone is a new stone species found in the eighties of the twentieth century in Alashan, due to excessive mining, now harder to find.

Grape agate origin

4,Grape agate identification

Recently, the heat wave of grape agate collection is higher than one wave, and as the resources of grape agate become less and less, its price soars again and again, so a large number of fake grape agate is found in the market, these fake grape agate less than a thousand, more than tens of thousands or even hundreds of thousands of millions, many innocent stone friends because of the lack of grape agate knowledge and discriminatory ability, and a great deal of its bullying.

Several common methods of fake grape agate.

A1, splicing method splicing method is to use the material color equivalent material splicing from the grape agate.

(1) The original stone splicing method in the mining process, due to improper operation of the original stone broken into several pieces, glued together with the grape agate. Because of the rich color and luster of grape agate, the splicing interface is good with the original stone, and it is extremely difficult to find the splicing with this method.

(2) It is a grape agate made by stitching together stones of the same color and different species. The general practice is to use broken agate blocks and materials such as English stone and other stones of similar color to make a bonded surface glued together by means of grinding and repairing. The original stone splicing method splicing stone should still be grape agate, while it stone splicing method splicing stone is fake stone.

A2, repair method repair method is in the mining process due to improper operation of the original stone surface damage, the damaged residual beads and other materials collected with glue and into the stone. This method of repairing the stone in the origin of a certain proportion of the original stone repair, such stones are the most difficult to identify, but the value is higher than the splicing method of splicing the stone.

A3. Craft method is the grape agate processed with modern tools.

(1) Original stone craft method: using the local production of beadless agate, commonly known as "light plate agate", using tools through the polishing process and made of stone.

2) It is made from stones of the same color as grape agate, such as stones made of green English stone. This kind of stone has obvious manufacturing traces, because polishing out the original stone with small and large beads is difficult in processing, and large and even beads are the main way to judge. The grape agate made with it stone craft method has a single color and its hardness is lower than the real grape agate is also the main point of judgment. This kind of stone can only be regarded as craftsmanship with low value.

made from stones of the same color as grape agate

Casting method casting method is the use of the original grape agate stone through the sand to create a mold, resin, ore powder and other substances into the mold formed casting parts, its characteristics: one is extremely similar to the original grape agate stone appearance, the second is the same color and luster with the original stone, the third is the specific gravity, hardness and the original stone is similar. Therefore, it is very difficult to identify the real one from the above points alone, and the following two pictures are fake grape agate casted by casting method. The fake grape agate casted by casting method is difficult to recognize because of the characteristics of similar quality and color, and recently I have found a large number of fake grape agate casted by casting method in many stone markets and even some famous local stone museums, and the danger is expanding.


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