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Q.

What is the difference between Hallmark Gold & KDM Gold?

Tags: education, beauty & fashion, hallmark
Asked by Joseph Chacko, 21 Dec '11 03:28 pm
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Answers (3)

 
1.

KDM means that the ornament was soldered with Cadmium.It has a low melting point (i.e.,321 degrees Celsius).Cadmium contains toxic fumes,which is bad for human skin.Many countries have banned its use.Its effects on the wearer is unknown.It is advisable to use ornaments that are soldered by other metals.
916 KDM
Standard gold is 24 carat (99.9% pure)
22 carat gold is called 916 KDM gold (In which Cadmium is soldered) It is 91.6% pure gold.
Hallmark is a purity certification of gold ornaments in accordance with Indian standard specifications.The bureau of Indian standards is involved in the development of technical standards ,certification and quality.
As per the BIS hallmarking scheme licence is granted to the jewelers by BIS under product certification scheme.The certified jewelers can get their jewelery hallmarked from any of the BIS recognized assaying and Hallmarking center.
What does Hallmark consists of ?
Hallmark consists of five components i.e.,BIS mark , Fineness number ...more
Answered by LIPSIKA, 21 Dec '11 04:09 pm

 
  
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2.

Hall mark for 24 carats gold and kdm for 22 carat jewellery gold hallmark is about .999 and kdm is .916
Answered by iqbal seth, 21 Dec '11 03:42 pm

 
  
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3.

I think Hallmark Gold is certified whereas KDM is alloyed gold
Answered by MAdhavan Avadhany, 21 Dec '11 03:30 pm

 
  
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