Gold purity is measured in karats (K) or carats (ct), which indicates the proportion of pure gold in the alloy. Here’s an overview of gold purity, how to check it, and common karat standards:
Understanding Gold Purity
24 Karat Gold:
This is considered pure gold, with a purity of 99.9% (0.999). It is often represented with the symbol “999.”
22 Karat Gold:
Contains 91.67% (0.916) pure gold, with 9% made up of other metals like copper, silver, or zinc. It is denoted as “916.”
21 Karat Gold:
Contains 87.5% (0.875) pure gold and is often marked as “875.”
18 Karat Gold:
Contains 75% (0.750) pure gold and is marked “750.”
How to Check Gold Purity
Hallmarks:
Look for an official hallmark on the gold item. In India, the Bureau of Indian Standards (BIS) provides hallmarks that specify the purity level of gold. Ensure the hallmark includes the BIS logo, the karat number, and the jeweler’s mark.
Acid Test:
This involves applying a small drop of nitric acid on the gold piece. The reaction can help indicate the karat of the gold, but this test is generally best performed by professionals to avoid damaging the jewelry.
Electronic Gold Testers:
These devices can accurately determine the purity of gold without causing damage. They measure the electrical conductivity of the gold.
Density Test:
This method involves measuring the weight of the gold in air and then measuring its weight in water to calculate its density. The density of pure gold is 19.3 g/cm³.
Fire Assay:
This is a highly accurate method done in laboratories where a sample of gold is melted and analyzed to determine its purity, often used by professionals in the industry.
Summary
24 Karat Gold:
99.9% pure (for coins, not typically for jewelry due to softness).
22 Karat Gold:
91.67% pure (common for jewelry).
18 Karat Gold:
75% pure.
When purchasing gold, always check for proper hallmarks and consider getting an independent appraisal to confirm purity if you’re unsure. That’s a very important note to keep in mind! Rates are indeed indicative and can vary based on several factors including GST, TCS and making charges.
Factors that Impact
GST (Goods and Services Tax):
In India, there is typically a GST applied to the sale of gold and silver, which can affect the final purchase price.
TCS (Tax Collected at Source):
When purchasing gold or silver over a certain amount, TCS may apply, and this is an additional charge that buyers need to be aware of.
Making Charges:
For jewelry, making charges can significantly increase the overall price. These charges cover the craftsmanship involved in creating the piece and can vary from one jeweler to another.
Recommendations Before making a purchase
Contact Your Local Jeweler:
Ask for the exact rates, including all additional charges such as GST, TCS, and making charges.
Compare Prices:
It can be beneficial to compare prices from different jewelers to ensure you’re getting a fair deal.
Inquire About Returns and Exchange Policies:
This can be important if you decide you want to change your purchase later.
By being informed and asking the right questions, you can make a more confident and satisfactory purchase!
