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About product and suppliers:
        Alibaba.com offers 25,632 12 mm quartz products. About 13% of these are quartz stone, 11% are wristwatches, and 9% are artificial stone. 

A wide variety of 12 mm quartz options are available to you, such as silica quartz, clear quartz pipe, and natural. You can also choose from quartz crystal, rutilated quartz, and smoky quartz. As well as from u-bent, one end closed quartz tube, and circular shape. And whether 12 mm quartz is crystal, organic material, or glass. 

There are 25,632 12 mm quartz suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of 12 mm quartz respectively. 

2 mm quartz products are most popular in North America, Western Europe, and Southeast Asia. 

You can ensure product safety by selecting from certified suppliers, including 6,477 with Other, 3,944 with ISO9001, and 903 with ISO14001 certification.