What is Hallmark gold and what is KDM gold
Gold can be purified mainly in two ways.
1.By heating with high temperature.2.With chemical exposure.
Every one wants to buy pure gold.There are many questions and doubts for people who wants buy pure gold.Common questions are
Every one wants to buy pure gold.There are many questions and doubts for people who wants buy pure gold.Common questions are
1.What is KDM Mark or KDM 916 Mark
2.What is Hallmark or Hallmark 916.
What is KDM mark ?
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.
What is Hallmark ?
Hallmark is a purity certification ofgold 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 jewelersby 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 (corresponding to caratage),Assaying and Hallmarking Center's mark year of marking denoted by a code letter and decided by BIS.The is done either by punching or laser marking machine.
The principle objective of assaying and hallmarking is to protect a consumer against victimization of irregular gold quality.Besides consumer satisfaction ,hallmarking helps to create an export competitiveness of gold jewelery thus provide strong impetus for gold jewellery exports.
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What the hell is that
if on gold 23kdm is written then what is means that
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23 kdm means 23 karat purity and is soldering with kDM(kadium also known as cadmium)...
24 karat means 999 pure gold(99.9%)
23 karat means 958 pure gold(95.8%)- means approximately 96% gold and 4% another metal ex: copper
22 karat means 916 pure gold (91.6%)
23 kdm means 23 karat purity and is soldering with kDM(kadium also known as cadmium)...
24 karat means 999 pure gold(99.9%)
23 karat means 958 pure gold(95.8%)- means approximately 96% gold and 4% another metal ex: copper
22 karat means 916 pure gold (91.6%)
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Thanks for sharing such great information about KDM Gold making, and think everyone should know about it. One should purchase certified jewellery. necklace set online
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