Common cleaning methods for rough stones:
Acetone cleaning. Acetone is a chemical raw material with strong decontamination power. It is especially suitable for stones that have been exposed for many years (such as Gobi stone). Wipe with cotton wool and wipe clean with a dry cloth. Do not rinse with water. Especially for the parts used for sticking, only this method can stick it firmly.
Clean with leather cleaner. There are commercially available leather cleaners for cleaning leather clothes, leather sofas, etc. It is simple and easy to use, just wipe it. The disadvantage is that the cost is a bit high.
Sand blast cleaning. For the so-called "leaky", "transparent" and "wrinkled" stones, the surface is uneven and the attachments are very strong, so it is difficult to use cleaning agents to be effective. You can go to a shop that sprays glass and ask them to sandblast it. Be careful not to overdo it to avoid damaging the surface of the stone.
Dry cleaning method. One is to lightly rub it by hand with No. 0 water sandpaper; the other is to purchase soft abrasive discs, such as felt abrasive discs, cloth abrasive discs, etc., and use an angle grinder to grind lightly mechanically. Be careful not to use excessive force to avoid damaging the stone. This method can also be used for stone polishing.
Volcanic agate is generally formed in basalt and usually has a stone skin.
Agate, also known as agate, carnelian, horse brain, etc., is a kind of chalcedony mineral. It is often a band-shaped block mixed with opal and cryptocrystalline quartz, with a hardness of 6.5-7 Degree, specific gravity 2.65, the color is quite layered. Available in translucent or opaque. The original form of the trigonal crystal system. They are often dense and massive and form various structures, such as breast-like, grape-like, nodule-like, etc. The most common ones are concentric structures. Chalcedony has different colors, usually green, red, yellow-brown, white and other colors. According to patterns and impurities, it can be divided into onyx, sardonyx, moss agate, castle agate, etc. Commonly used as playthings or ornamental objects. It is often used as an ornament or as a gift. Strings of agate balls can often be seen among ancient funerary objects.