There are so many troubles in life. The hawksbill we usually wear is not all genuine. There is a kind of water drop glue on the market that can make the appearance of hawksbill. So how can hawksbill identify the true and false? Next, I'll show you how to identify old tortoiseshell pieces and imitations.
The main identification methods are as follows
1. Strong light irradiation method: the tortoiseshell is projected under the strong light or flashlight light, and the transparent and beautiful patterns can be seen in the genuine tortoiseshell. The transparent blood filaments are deep into the nail piece, and the color spots are numerous round dots, such as millet dots, forming irregular shapes with uneven boundaries. If it's a live tortoiseshell, put it on a bright light bulb, and sometimes you can see the blood flowing in it. On the surface of the products, the blood filaments are flakes, mottled, rigid or lumpy.
2. Polishing method: after polishing, the tortoiseshell pieces present a unique luster and charm. Imitations do not have this feature.
3. Combustion method: because its main component is protein, when the scraping powder is ignited or touched by hot needle, it has the smell of scorched hair, while the imitated products have the smell of peculiar smell, such as bakelite, tartaric acid, camphor and vinegar.
4. Hand weighing method: the density of tortoiseshell is 1.29g/cm3. The plastic imitation is 1.05-1.10g/cm3, which is easy to distinguish.
5. Section observation method: after soaking hawksbill in warm water and softening, section observation with magnifying glass or microscope, red and brown spherical particles can be seen, the color spots are round pigment dots, with clear speckle structure, and the imitated products have no such structure. Plastic products with strip, visible boundary obvious ribbon.
6. The difference between natural tortoiseshell and pressed tortoiseshell is that the color of imitation tortoiseshell becomes darker after being heated, and there are empty bubbles, which are elongated. Natural tortoiseshell is the opposite.
7. The tortoiseshell is assembled to look very thick, but from the side view, it can be seen that there are color differences between different pieces; from the magnifying glass, there are traces of glue and residual bubbles.
8. The difference between hawksbill and ox horn, ox horn generally does not have the pattern of hawksbill (that is, red, black, transparent, yellow mixed with spots), hawksbill spots have good luster, and the pattern is transparent and beautiful.
9. Boiling water heating method: after boiling water, hawksbill can be bent without breaking, while imitation hawksbill is easy to break after boiling water.
10. Finally, the magic point is that when the big tortoiseshell piece is fished out of the water, the water will spread around, so the tortoiseshell can avoid fog, water and wind.
The main points for distinguishing old tortoiseshell parts from old imitation can be summarized as follows:
1. After being kept for a long time, the surface of tortoiseshell usually has no obvious luster, such as pinholes.
2. The real tortoise shell is a little heavier than the fake tortoise shell, because the imitation materials are lighter, such as casein plastic, bakelite, celluloid and resin.
3. When the hawksbill shell is exposed to light, it should be yellowish brown and translucent. The edges of the black and brown stripes inside are uneven. If the black and brown stripes appear to be rolled or patchy, and the edges are clear, it should be an old imitation.
4. If the old imitation tortoiseshell is burned with metal needles, a plastic odor will appear on its surface.
5. The internal structure of the old tortoiseshell parts can be seen under strong light, and it is composed of numerous round points of different sizes.