Verified Supplier | Guangzhou 7 Gram Mac...

Guangzhou 7 Gram Machinery Equipment Co., Ltd.

China (Mainland) | Trading Company | Contact Details
Established 2011
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Quick Details

  • Brand Name: 7g
  • Place of Origin: Guangdong, China (Mainland)
  • Model Number: 7g-306
  • Jewelry Tools & Equipments Type: diamond tester
  • color: black
  • pen weight: 100g
  • packing weight: 165g
  • pen dimension: 135*43*14mm
  • packing dimension: 190*59*35mm

Packaging & Delivery

Packaging Details: 200 pcs/carton carton size: 60*45*37cm
Delivery Detail: 3 days for moq


Jewelry tool diamond detector
Diamond selector, gemstone tester
Jewelry tools and equipment
Jewellery tools
one year warrant

Diamond Tester:
The Prestige Series II Diamond Tester with state-of-the-art technology assuring quick- accurate readings to determine if a stone is a real diamond or a fake. 
Features include: 
 Automatic and manual mode. 
 Linear display for increased information. 
 Adjustable gain for small stone sizes. 
 Compensation for ambient temperature. 
 Fast warm up time 
 ten seconds!
 Portable with one nine-volt battery (included). 
 Auto shut-off with a push button switch. 
 Unique new anti-fade circuit which compensates for stone heating. 
 Low battery indicator for accurate readings. 
 Multipurpose alarms: a. Beeps when ready. b. Metal alert. c. Beeps repeatedly when testing a diamondIf you are interested in our products, please contract me freely.


Shippment: By courier(DHL/UPS/TNT/EMS/China Post/Fedex)

By air .By sea

Payment: T/T .Western Union/Paypal/MoneyGram

Afterservice: All machine will enjoy one year warranty

Any question about our products, we will happy to answer you within 24hours

Sincerely look forward to any of your Inquiry


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Ms. Diana Qiu
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