Identification of true and false tortoise shells

In the classification of gems, tortoise shells are classified as organic gems. It has a wide range of uses and has long been loved by people. How to tell the truth from the false,

1. strong light irradiation method: when the tortoise shell is projected under strong light or flashlight light, the genuine product can see transparent beautiful patterns, and transparent bloodshot penetrates into the deck, and its spots are in the form of countless dots, such as millet dots gathering together to form an irregular shape with uneven boundaries. The bloodshot surface of the imitation is flaky, and the markings are dim or blocky.

2. Polishing method: The tortoise shell shows unique luster and charm after polishing. Imitation does not have this feature.

3. Burning method: ignite the shaving powder or touch it with a hot needle, and the genuine product will have the smell of burning hair. Imitation is peculiar smell, bakelite emits sour smell; Celluloid smells of camphor; Safety celluloid and casein plastic are vinegar-flavored.

4. Hand weighing method: the density of tortoise shell is 1.29g/cm3. Plastic imitation1.05-1.10g/cm3, easy to separate.

5. Slice observation method: After the tortoise shell is soaked in warm water and softened, observe the slice with a magnifying glass or microscope, and the reddish-brown spherical particles can be seen, and the spots are round pigment spots with clear structure. Plastic products are strip-shaped and clearly visible ribbons.

6. The difference between natural hawksbill and pressed hawksbill is that the imitation hawksbill is elongated due to its dark color and bubbles after heating. Natural hawksbill is the opposite.

7. Tortoise shell looks very thick when assembled, but from the side, it can be seen that there are color differences between different pieces; Looking at it with a magnifying glass, there are traces of glue and air bubbles.

8. In the market, horns are often passed off as hawksbill to deceive consumers, but the colors of horns are far less bright than hawksbill, and there are no hawksbill spots (i.e. red, black, transparent and yellow mottled spots). The real hawksbill spots are shiny and the patterns are transparent and beautiful; The horn is easy to crack in the process of use and split into layers.

9. When the hawksbill is fished out of the water, the water will spread around, so the hawksbill can avoid fog and wind.

10. Tortoise shell craft never fades and can be passed down from generation to generation.

Tortoise shell is horny and has the reputation of "sea gold". Since ancient times, it has been regarded as auspicious and happy, representing nobility and sacredness. It is your ideal value-for-money collection and a symbol of your value.

How to distinguish hawksbill?

Identification method of true and false tortoise shells;

1, strong light irradiation method

When the tortoise shell is projected under strong light or flashlight light, genuine products can see transparent beautiful patterns, and transparent bloodshot penetrates into the deck, and its spots are in the form of countless dots, such as millet dots, forming irregular shapes and uneven boundaries. The bloodshot surface of the imitation is flaky, and the markings are dim or blocky.

2. Polishing method

The polished tortoise shell presents a unique luster and charm, while the imitation does not have this feature.

3. Combustion method

If you light it at the end of shaving or touch it with a hot needle, the real thing will smell like burning hair when it burns. Imitation is peculiar smell, bakelite emits sour smell; Celluloid smells of camphor; Safety celluloid and casein plastic are vinegar-flavored.

4, hand weigh in hand method

The density of tortoise shell is 1.29g/cm3, and that of plastic imitation is1.05-1.10g/cm3, which is easy to separate.

5. Slice observation method

After the tortoise shell is soaked in warm water and softened, the slices are observed with a magnifying glass or microscope, and red-brown spherical particles can be seen, and the spots are round pigment spots with clear stripe structure. Plastic products are strip-shaped and clearly visible ribbons.

6. The difference between natural hawksbill and pressed hawksbill is that the imitation hawksbill is elongated due to its dark color and bubbles after heating. Natural hawksbill is the opposite.

7. Tortoise shell looks very thick when assembled, but from the side, there is color difference between different pieces; Looking at it with a magnifying glass, there are traces of glue and air bubbles.

8. The difference between the hawksbill and the rhinoceros horn: generally, the rhinoceros horn has no hawksbill pattern (i.e. red, black, transparent and yellow variegated colors), the hawksbill spot is shiny, and the pattern is transparent and beautiful.

9. When the big tortoise shell slices are fished out of the water, the water will spread around, so the tortoise shell can avoid fog and wind.

10, boiling water heating method

After boiling water, the tortoise shell can bend at will without breaking, while the imitation tortoise shell is easy to bend and break after boiling water.

Identification method of true and false tortoise shells

The boss upstairs answered very well, that's all.

However, 10 is wrong. Tortoise shell as the raw material of jewelry is taken from the scales on its back, which is organic. The shell of adult hawksbill is bright yellow-brown. This kind of decoration is perishable, and tortoise shells made before the late Qing Dynasty are hard to see so far.

How to identify tortoise shells?

Tortoise shell, named tortoise shell and tortoise shell in ancient times, is a reptile that lives in the tropical deep sea floor. Because its life can be as long as 1500 years, it has thirteen shield-shaped scales on its back, which are arranged in three rows like tiles, so it is also called "thirteen scales" and "longevity turtle". The difference between hawksbill and sea turtle: hawksbill's mouth is as sharp as eagle's mouth, its back shell is not a whole shell, and its scales can be peeled separately, with thirteen scales; The turtle's head is round and its back shell is a whole shell. Tortoise shell scales are crystal clear, with clear and beautiful patterns and soft and bright colors. Craft ornaments made of them are dazzling, luxurious and elegant. In the eyes of orientals, tortoiseshell has been a symbol of good luck and longevity since ancient times, and it has won the love of royal nobles, rich families and even the general public. In the ancient "Long Poem Sage" and "Peacock Flying Southeast" based on the story of the Eastern Han Dynasty in China, there are poems of "stepping on silk with one foot and shining on the head"; Empress Wu Zetian of the Tang Dynasty once used tortoise-shell bracelets and earrings. In the Song Dynasty, people loved hawksbill more, and once imitated the patterns and colors of hawksbill shells to create exquisite and lifelike hawksbill black glazed porcelain. During the Ming and Qing Dynasties, the use of tortoise shell products seemed to be more common. From the jewelry worn by the concubines in the palace to the literary plays in the literati's study, such as small screens, vases, aromatherapy, pen holders, pen holders, Yin He, glasses cases, glasses frames, and even bracelets, fans and powder boxes used by geisha * *, there are useful tortoise shell craftsmen. The tortoise shell comb, fan handle and hairpin used by Empress Dowager Cixi in the Qing Dynasty, and the tortoise shell cover inlaid with precious stones worn by concubines in the palace can still be seen in museums. At the end of Ming Dynasty and the beginning of Qing Dynasty, the tortoise-shell peach blossom fan left by Dong Xiaowan, a geisha known as one of the "Eight Colors of Qinhuai", was exquisitely carved, rare and unique, and even more praised by people. From the collection point of view, tortoiseshell scale products are the best with beautiful patterns, soft and bright colors, novel shapes, excellent workmanship and good preservation, and also have the greatest appreciation potential. Nowadays, the so-called "tortoise shell products" seen in the antique market are mostly imitations made of other turtles, horns or plastics, and there are few genuine products. If collectors and buyers lack in-depth understanding of tortoise shells, they will "make holes" if they are not careful, thus handing over "tuition fees". In order to help Tibetan friends identify the true and false tortoise shells, here are some effective methods that Tibetan friends may wish to try. Look at the color: tortoise shell scales have black and yellow stripes, red and yellow stripes, amber stripes, light red stripes, deep red stripes and dark stripes. Under the illumination, there are red blood lines on the edge of the pattern, which is the characteristic of hawksbill scales; The imitation tortoise shell is made of celluloid, bakelite, resin and other chemicals. Compared with the real thing, its color lacks a clear and warm feeling and looks dry. The fake hawksbill spots with false corners are dark in color, far less bright and transparent than hawksbill spots with red blood, and are prone to layer-by-layer cracking during use. Look at the markings: the markings inside the hawksbill scales are cloud-like and multi-layered, which is related to the hierarchical growth process of the scales. It takes decades for scales to grow a layer, and the thickness of a layer is less than one millimeter. The superposition of patterns on each layer is like the superposition of clouds. Tortoise-like markings are often brownish red, and the boundary with translucent background color is blurred, which is not as clear as the original, and the markings are flat and rigid, with no change of shade and halo; The artificial tortoise shell with horns is vertical, because the horns are vertical and long.

How to tell the true and false tortoise shells?

I'm happy to answer your question:

The easiest way to identify tortoiseshell is to burn the inside of tortoiseshell with a red needle. The smell of burning hair is proved to be true, and the smell of burning plastic is false. Another less destructive experiment is to observe the floc inside the turtle shell with a high magnification magnifying glass. If there are many tiny dots under the high magnification magnifying glass, it proves to be true. If it's a piece,

I hope my answer is helpful to you.

How to identify the true and false hawksbill?

Say a few simple appraisals ~

1. The tortoise shell is projected under strong light, and the genuine tortoise shell can penetrate into the tortoise shell as transparent bloodshot.

Its spots are tiny dots, with different sizes scattered together to form an irregular shape.

The bloodshot of counterfeit products is mainly formed on the surface, with thin slices of different sizes, monotonous and unnatural spots or cloud patterns.

2. After the tortoise shell is soaked in warm water, it can be seen with a magnifying microscope that the spots are round and have a clear spot structure.

Plastic products are usually long strips, also called dyes, with obvious ribbons on the edges.

3. The difference between natural hawksbill and artificial products is that the color of artificial products becomes darker after heating, and bubbles usually appear.

From the side, different stripes will have color difference, and then look at it with a magnifying microscope, and you will find creases and seams.

There will be small bubbles. Natural hawksbill won't have this phenomenon.

4. The natural counterfeits in the market all use horns as substitutes, and the luster and characteristics of horns are completely different from those of natural tortoiseshell.

These simple identification methods are for your reference ~

Identification diagram of true and false hawksbill

The boss upstairs answered all the questions, and that's basically it. However, 10 is wrong. Tortoise shell as the raw material of jewelry is taken from the scales on its back, which is organic. The shell of adult hawksbill is bright yellow-brown. This kind of decoration is perishable, and tortoise shells made before the late Qing Dynasty are hard to see so far.

Identification of true and false tortoiseshell

howdy

From the photo, this is a real tortoise shell.

Please refer to the appraisal conclusion of authoritative testing institutions.

I hope the answer can help you.

How to tell the true from the false?

Tortoise shell turtle:

Alias: Thirteen Scales, Hairs, Smells, and Daidai

Latin name: Eretmochelys tortoise shell

English name: tortoise shell.

Tortoise shell: a family of turtles. Also known as the thirteenth scale. Dai Mao, the ancient name of Wen Jia. Distributed in Atlantic Ocean, Pacific Ocean and Indian Ocean. China's mountainous areas are distributed in the northeast, south and coastal areas of Guangxi. There are two pairs of forehead scales on the head; Beak plane, curved palate olecranon hook. Heart-shaped carapace, shield tile, often inlaid by the elderly. A spine protective cover 5; 4 rib guards on each side; Shields11on each side of the saw-tooth back fuselage; Hip cover 2, with a gap in the middle, is not tangent. Paddling limbs, forelimbs long and big, each with two claws; Short hind legs, each paw. Armor with a short tail, usually not exposed. The carapace is reddish-brown, with pale yellow cloud spots and luster; Abdominal nails are yellow.

Living in the ocean, fish, mollusks and seaweed feed on it. From July to September every year, we dig holes on the beaches in tropical and subtropical waters to lay eggs. Egg white, round, leathery soft shell, incubation period is about three months. As a medicine, Beijiadun tablet has the effects of clearing away heat and toxic materials, nourishing yin and suppressing yang, and can also be used as an ornament.

[Edit this paragraph] Overview:

It belongs to Tortoise, Tortoise, Tortoise and Tortoise.

[Edit this paragraph] Main components

Contains keratin and colloid.

[Edit this paragraph] Appearance features The largest shell of the hotel is nearly one meter long and weighs 27 kilograms. Generally, it is only found about 60 cm in the middle, with a long shell and a weight of 9- 14 kg. * * * There are 13 shells arranged like tiles, hence the name "Thirteen Scales". The adult carapace is bright brown, smooth and shiny. Short tail, front and rear limbs, each with two claws. The head, tail and limbs can be retracted into the shell. The scales of the carapace and head are reddish brown, black and white. The neck and hind limbs are grayish black, and the ventral surface is almost white.

There are hard scales on the back and abdomen. Zoom 2 cheekbones in front of the head. The nose is close to the kiss. It needs to be hooked, with a parrot-like mouth and a serrated chin. On the back of scales, herpes zoster in early form becomes flat and juxtaposed with age, and the surface luster is composed of brown, light yellow and white patterns. Central spinal scale 5, 4 pairs of scales on both sides of upper rib; Make sure the gold scale is 25 and the edges are serrated. 13 abdominal scales, yellow and black. The limbs are flat leaves. The forelimbs are big, with two claws and only one hind paw. Armor with a short tail, usually not exposed.

[Edit this paragraph] Reproductive habits

The spawning period is from March to April. When spawning, the spawning point crawls on the beach row during the day. This pit is about 20 cm in diameter and 30 cm in length. The depth of the female lies in the length of the eggshell of 60-80 cm. During spawning period, spawn 3 times, each time 130-200 grains. Oval, soft and elastic shell. The diameter of an egg is about 3.5 mm. The incubation time is long, about two months. First of all, the hatched larvae are not completely hard, but they also have herpes zoster, with a shell of about 40-46 mm. The tortoise's neck stretches freely, instead of turning left and right as before. Fierce, it is a carnivorous turtle, preying on shellfish such as fish, shrimp and crabs, and also eating seaweed. A powerful jaw can crush turtle shells, even the shells of bivalves. Larvae eat algae.

[Edit this paragraph] Distribution

Distributed in tropical and subtropical waters of Indian Ocean, Pacific Ocean and Atlantic Ocean. China is made in Xisha Islands, Hainan, Guangdong, Taiwan Province, Fujian, Zhejiang, Jiangsu and Shandong coastal areas.

[Edit this paragraph] belongs to the national second-class protected animal protection.

Level. Guangdong Province has established Donggang Nature Reserve, which mainly protects turtles such as turtles and green turtles. Now, this rare and protected animal is forbidden to hunt.

[Edit this paragraph] Jewelry, viewed from the back, is an organic raw material.

Technical value of tortoise shell. Adult tortoise shells are bright brown. This kind of jewelry is perishable, and it was difficult to see it before the tortoise shell was made in the late Qing Dynasty. over there

The famous sentence of the Han Dynasty "Peacock flies southeast" says, "When you step on silk, your head glows".

[Edit this paragraph] Gem Identification and Classification Edition

Tortoise shell is listed as an organic gem. It has a wide range of uses and has long been loved by people. How to tell the true from the false,

1. Glare method: The tortoiseshell light of a projector lamp or flashlight, the really beautiful pattern can be seen in a transparent, transparent bloodshot film, and its dyeing is like countless dots, such as millet dots, gathering together to form an irregular serrated edge. The bloodshot surface is flaky, dull or blocky.

2. Polishing method: The polished tortoise shell has unique brilliance and charm. Imitation does not have this ......

How to identify the true and false hawksbill?

It's really dark and rough. It is not easy.