How to tell that natural amethyst has dichroism

The dichroism of natural amethyst can be seen in two ways:

1.Looking at the amethyst from different angles, you can see that it has different colors. Specifically, when viewed from different angles, the color of the amethyst will gradually change from purple to blue. This property is known as dichroism.

2.Use the hair strand detection method. By placing a strand of hair under an amethyst, the difference between natural and smelted amethyst is evident by the naked eye. Specifically, natural amethyst is birefringent, while smelted amethyst does not.

Both of these methods can be used to detect the dichroism of amethyst, and thus determine whether it is a natural amethyst.

1. Look at the color.

Amethyst will show different shades of purple due to its origin and color, so the purple of natural amethyst ranges from the lightest light purple to the very strong deep purple. Naturally occurring amethysts can sometimes have uneven color on different beads or even on the same bead due to their natural influences. If it is a synthetic amethyst, its color is very uniform and very perfect.

2. Look at the ribbon.

Naturally occurring amethysts tend to exhibit bands, while synthetic amethysts do not. If you look closely, a natural amethyst bracelet has crystal transparency and few cracks, but you can still see obvious color bands. Synthetic amethyst does not have this characteristic, and the color of synthetic amethyst is very single and inflexible.

3. The temperature of wearing on the body.

Natural amethyst will give people a cold feeling when placed in the palm of the hand, and if worn on the body, the temperature of natural amethyst will slowly rise with body temperature, and eventually it can maintain the same temperature as the human body.

But the synthetic amethyst is different, the synthetic amethyst is placed in the palm of the hand, although there will be a cold feeling at the beginning, but after wearing it on the body for a period of time, it will feel higher than the body temperature, so this identification is the easiest way, especially the amethyst made of glass is the easiest to identify.

4. Look at the inclusions.

Amethyst, like other crystals, often contains cracks, tidbits or other mineral inclusions inside.

However, there will be a lot of bubbles inside the synthetic amethyst crystal, and the material of the synthetic amethyst is glass, so if you are not sure about the shape of the bubbles, you can look at the glass, and you will find that there are often bubbles in the glass.

Value evaluation. Amethyst is mostly used in gemstone jewelry. Its value depends on the following four aspects:

Quantity: The smaller the quantity, the better.

Clarity: The purer the crystal ball, jewelry, etc., the better. Ornamental crystals require inclusions.

Package body: complete, image, colorful, clear meaning is the top grade.

Process: The modeling requires coordinated proportions, clear primary and secondary, realistic image, and polishing requires brightness and no scratches.

The above content refers to Encyclopedia - Amethyst.

Amethyst and purple glass have different physical properties. They behave completely differently under orthogonal polarizers: amethyst, when rotated for one turn, appears bright and dark, while glass appears completely dark.

In addition, under a magnifying glass or microscope, amethyst can see two clear images of a single edge when looking at the back facet edges of a gemstone, but not in glass, which is a single refractive material. Therefore, it is generally possible to distinguish glass from amethyst with a 10x magnifying glass. Amethyst is a purple, monocrystalline quartz with intact crystals.

Summary. Thermal conductivity, the real amethyst rough will feel very cold when touched, the fake one will feel cold at the beginning, and it will produce a warm and dry feeling in the later stage; Streaks, irradiated in the sun, can naturally see the horizontal cotton wool-like substance, the fake ones do not have obvious stripes; Hardness, the natural hardness is higher, and it will not leave marks when scratched on the surface, and the fake ones will leave marks on the surface. Distinguish the true and false amethyst rough can look at the thermal conductivity, natural crystal rough has strong thermal conductivity, you will feel very cold when touching, and the touch is very comfortable.

Fake amethyst rough is cold when first touched, and it will produce a warm and dry feeling in the later stage. To distinguish the true and false amethyst rough can look at the stripes, the amethyst rough is folded in half to observe the sunlight, the real amethyst rough can see a faint horizontal stripe and cotton wool-like substance, the fake amethyst rough is artificially polished, there are no obvious stripes on it. To distinguish the true and false amethyst rough, you can also look at the hardness, the real amethyst hardness is higher, the Mohs hardness is about 7, and it will not easily leave scratches on the surface.

Fake amethyst rough has a low hardness and is generally made of glass, which will have obvious scratches after scratching the surface.

Excuse me, but please go into more detail?

Thermal conductivity, the real amethyst rough will feel very cold when touched, the fake one will feel cold at the beginning, and it will produce a warm and dry feeling in the later stage; Streaks, irradiated in the sun, can naturally see the horizontal cotton wool-like substance, the fake ones do not have obvious stripes; Hardness, the natural hardness is higher, and it will not leave marks when scratched on the surface, and the fake ones will leave marks on the surface. Distinguish the true and false amethyst rough can look at the thermal conductivity, natural crystal rough has strong thermal conductivity, when you touch it will feel very cold, the touch is very comfortable. Fake amethyst rough is cold when first touched, and it will produce a warm and dry feeling in the later stage.

To distinguish the true and false amethyst rough can look at the stripes, the amethyst rough is folded in half to observe the sunlight, the real amethyst rough can see a faint horizontal stripe and cotton wool-like substance, the fake amethyst rough is artificially polished, there are no obvious stripes on it. Distinguish the authenticity of the amethyst rough can also be made to see the hardness cavity reed, the real amethyst hardness is higher, the Mohs hardness is about 7, and it will not easily leave scratches on the surface. Fake amethyst rough has a low hardness and is generally made of glass, which will have obvious scratches after scratching the surface.