Is semi-precious stone natural?
Not necessarily, there are natural and synthetic ones.
The name of semi-precious stones is misleading. What is the other half? Is it fake? What's the name of a low-grade gem? There are indeed "semi-precious stones" in the market, and synthetic stones with semi-precious stones and semi-plastic materials that are difficult to distinguish between true and false are flooding the market. For example, fire opal looks beautiful. You can look at the reverse side. Most of them are wooden substrates, and only a thin layer on the surface is natural opal.
The difference between semi-precious stones and precious stones
1 Gems mainly include diamonds, rubies, sapphires and emeralds. In terms of price, these gems must be valued in carats, so many times gems refer to them.
Common semi-precious stones: amethyst, topaz, tourmaline, aquamarine, garnet, olivine, obsidian Morganite, tanzanite, zircon, lapis lazuli, prehnite, moonstone, coral, opal, mottled and apatite.
Semi-precious stones can be divided into timely gems and non-timely gems. Among the seasonal gems, crystal is the most important and diverse, and the rest are tourmaline, aquamarine, olivine, amethyst, garnet and agate. Unseasonable gems include amber and coral. It should be noted that the general classification principle is mainly based on the hardness and price of gems, that is, the harder and rarer the gems, the more expensive they are. But in fact, many precious semi-precious stones are also priced according to carats, such as tourmaline, hair crystal, ghost crystal and so on. So it depends on the actual situation. You know, because gems are pure natural products, absolutely the same gems don't exist, and there are always rules behind the scenes.
Semi-precious stone maintenance method
1, stored separately in a soft jewelry box, to avoid collision and scratch of different kinds and hardness of gems;
2. Avoid wearing accessories when doing heavy work and strenuous exercise, and please avoid being close to heat sources;
3, regular cleaning, keep the smoothness of jewelry;
4. After the organic gemstone is punched, it should not be worn in a hot and humid environment, so as to avoid steam entering the small hole and discoloring it;
5, avoid contact with acid and alkali substances, so as not to corrode gems;
6. Avoid scratches, conduct self-inspection on inlaid gem ornaments regularly, and send them to Tongling jewelry store/museum for reinforcement and maintenance in time once problems are found.
Classification of common gems
1 Traditional classic gems: including rubies, blue sapphires, emeralds and colored diamond, which have been circulated for hundreds of years and have always been welcomed by high-end people with high popularity. Excellent quality is very rare in the market. The price of 1 carat is usually several hundred to tens of thousands of dollars, especially as high as hundreds of thousands of dollars.
2. Appreciator's gems: including black opal, metamorphic rock, emerald cat's eye, Pale tourmaline, colored sapphire, pink topaz and garnet. These gems are relatively unknown and rare in the market, but they are often loved by powerful and discerning connoisseurs. The price of 1 carat is usually hundreds to thousands of dollars, especially as high as more than 10 thousand dollars.
3 New classic gems: including tourmaline, aquamarine, tanzanite, topaz and sapphire, are becoming more and more popular, but their prices are obviously higher than fashion gems. The price of 1 carat is usually in the tens to thousands of dollars, especially as high as thousands of dollars.
4. Gemstones: including spinel, zircon, moonstone, Morganite and other beryl, which are not well-known in the market, but collectors who like rare varieties may be particularly interested in them. Generally, it is 100 yuan, and high-quality spinel can be counted as thousands.
Fashion gems: including amethyst, topaz, white opal, olivine, magnesium aluminum garnet, blue topaz, cordierite, chrome diopside, amethyst, kunzite, andalusite, lapis lazuli, turquoise, onyx, chrysotile, white jade and amber. Most of them are well-known in the market, completely available in the market, affordable, and easy to buy in large carats.