Different gemstone necklaces have some special requirements and precautions in terms of maintenance, as follows:
1. Jade necklace
Although jade is tough and resilient, it has a certain degree of impact resistance. However, processed jadeite products are often thinner and can be damaged by impact.
2. Emerald necklace
The hardness of emerald is slightly higher than that of jade, but it is more brittle, so it cannot withstand impacts and falls more than jade. In addition, emeralds are afraid of high temperatures, and when exposed to fire, their color will fade, making them prone to cracking at high temperatures.
3. Opal Necklace
Opal has a low hardness and should avoid friction with other objects. Opal contains moisture and should be avoided from high temperatures. Otherwise, after losing moisture due to evaporation, it may lose transparency in light cases and explode in heavy cases. In addition, opal is not acid resistant, so when wearing opal jewelry, one should avoid high temperatures and acidic substances. When collecting Opal jewelry, it is also important to note that the environment should not be too dry, otherwise dehydration and cracking may occur. To prevent dehydration, it is advisable to soak Opal jewelry in clean water at regular intervals during the dry season.
4. Amethyst necklace
The color of amethyst is unstable and can fade when exposed to high temperatures or prolonged exposure to sunlight. During wearing or storing, avoid high temperatures or exposure to sunlight. The natural amethyst is called "the guardian stone of love". It is noble and elegant, and is very popular.
5. Malachite and turquoise Necklace
These two types of gemstones have a higher hardness than water and are very prone to wear and tear. The chemical properties of both are unstable and will corrode and dissolve when exposed to acid. Turquoise is easy to change color under high temperature, even if exposed to the sun and soaked in sweat for a long time, turquoise will also change color. These are all precautions that must be taken during the wearing and storage process.
6. Pearl and coral necklaces
The hardness of pearls and corals is very low, and they are easily tarnished by friction. Both components are calcium carbonate, which will undergo corrosion and dissolution when exposed to acid. In summer, it is easy to sweat, and sweat can also damage the surface of pearls and corals and lose their original luster. Powders, perfume and hair creams in cosmetics will also gradually fade pearls. So, it's best not to wear such jewelry in summer. If stained with sweat, rinse in clean water and gently dry with soft fabric. Pearl jewelry must be rinsed with water before collection, and the storage area must also avoid cosmetics.
7. Lapis lazuli necklace
After the lapis lazuli necklace is stained, it must not be soaked or rinsed with water. Because lapis lazuli is a granular aggregate composed of various minerals, if soaked and rinsed with water, the dirt on the surface of the gemstone will penetrate inward, thereby changing the original luster of lapis lazuli. After the sapphire jewelry is stained, it can be gently wiped with a damp cloth to remove the dirt.