Fashionable crystal collectors like to collect natural crystals, but they often look away from the large number of synthetic crystals on the market. So, how to distinguish between natural crystal and synthetic crystal?
During the formation process of natural crystals, affected by the environment, the color is often unevenly distributed, and the hue varies in depth. Natural crystals have color differences. It is impossible for a natural crystal to have a uniform color in every part. For example, citrine, there are very few natural citrines on the market. Natural citrine can be distinguished by putting it in water. The color of natural citrine in water is not uniform. Usually, a piece of yellow color irradiates the whole crystal to be yellow. Synthetic crystals have all colors, either very dark or very light. The colorless synthetic crystal is pure white, and the natural colorless crystal has a little gray tone.
Look at the characteristics of inclusions
Natural crystals always have some impurities. When observing under the light, you can see faint, uniform and small horizontal stripes or cotton-like substances in the crystal. Natural crystal has a wide variety of solid inclusions and cotton-like gas-liquid inclusions, with different shapes and sizes. Synthetic crystals are artificially produced products under relatively stable conditions. The bulk products have the same high transparency, high clarity, and flawlessness, and some have bubbles or solid impurities. These impurities appear as a kind of breadcrumbs, which are distributed in layers like desktop dust. Careful observation will reveal that the bubbles grow between the crystal nucleus and the synthetic crystal, and the bubbles are distributed along the crystal nucleus wall, forming “bubble walls” that are parallel to each other. Some bubbles are tadpole-shaped, with their heads arranged towards the wall and tail. There are also inclusions like nails. Natural crystals often have group inclusions arranged along a face, but this face is often single and undulating, and the inclusions that make up the face will be found under a gem microscope. They are mostly two-phase inclusions, not just bubbles. The difference between the two is obvious. Recently, some synthetic crystals often have some triangular long tubular pores, and there are green and red powders in these pores. The characteristic of this kind of long tube is that it is arranged in parallel in one direction, the cross section is triangular, and the uneven green and red powders are usually distributed along the wall. The middle is often empty, and the end of the long tube tends to become sharp. The real natural crystals are crystals containing minerals such as actinolite and rutile, each of which has its own crystal shape. They are encased in crystals, arranged randomly without directionality, and vary in thickness and length.
Look at the ribbon
Another feature of natural colored crystals (mainly amethyst, citrine, and smoky quartz) is the hexagonal ribbon like sapphire. The color bands in synthetic crystals are often parallel color bands and develop layer by layer along the crystal core wall. There is a synthetic green crystal necklace, which appears alternately in yellow and green, much like the ribbon of natural crystal. In addition, there are some brown translucent solid impurities inside, which can easily be mistaken for natural green crystal, but the ribbon formed by synthetic crystal is Distributed in parallel along the crystal core wall, the entire string of crystal ribbons in the necklace made has the same change, and the narrow and narrow changes in the color band of each grain give people a feeling of “unity in step” too much.
Identification of Natural Amethyst and Synthetic Amethyst
The color of natural amethyst is very uneven, sometimes forming color bands of the same shade; the color of synthetic amethyst is uniform and dull. Natural amethyst contains mineral bodies such as mica, magnetite, and rutile; synthetic amethyst contains only seed chips and breadcrumb-like solid impurities. The gas-liquid inclusions in natural amethyst appear in groups, sometimes distributed like cotton and have a fluid state; the gas-liquid inclusions in synthetic amethyst are isolated spherical. Sometimes water ripples are seen on the polished surface, which is also a characteristic of natural amethyst.