If you buy one hour if you want to work on a single battery or should be wound daily. Ask whether the warranty or guarantee is included, for how long this will continue, and what spare parts and repair problems covered. We also ask how and where you can see the servicing and repair. Know the difference between the establishment of a laboratory gemstones, and it was extracted from the natural stones. Stones, which was established in the laboratory visually identical to extract stone from the face of the earth. The big difference is the cost: laboratory-making stones are less expensive than naturally mined stones. But they are like stones mined from the earth, you must specify these rules as a laboratory created. If you want natural stone mined, and whether it was cured. Gemstone treatments - such as heating, dyeing or bleaching - can improve the appearance of stone or durability. Some treatments are permanent, and some may require special care to create. Treatments may affect the value of the stone. | 
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