The charging standard is not exactly the same, which is related to the materials submitted for inspection, appraisal items and submitting units. Generally speaking, personal inspection will be more expensive. For the big card, it is about 100 yuan. The appraisal time is related to the inspection organization. If you have your own equipment, you can get the test results within half an hour. If you just send it for inspection and then send it to the laboratory for testing, it will take longer, usually 3 days.

Matters needing attention in jewelry appraisal

Hardness can be understood as the hardness of a gem. High hardness is also a necessary condition for gemstones, but the determination of hardness also requires related equipment. But this does not prevent us from using it for identification according to the characteristics of hardness.

For minerals with the same composition, the hardness of crystal is higher than that of glass, so we can distinguish crystal, opal, agate and glass according to hardness. As long as it is a sample for carving, the sample with small hardness can be characterized by high hardness. Similar methods can also be used to identify hard diamonds, rubies, sapphires and glass fakes.