Check Gold Purity

Gold, often referred to as the "precious yellow metal," is one of the most valuable and sought-after metals globally. In India, where gold holds both cultural and financial significance, its purity plays a crucial role in determining its market value as well as its eligibility and worth in gold loans. If you are wondering how to check gold purity for accurate valuation, here are the different processes prevalent, especially in India. 

How to Test Gold Purity in Karats?

Karat indicates the percentage of gold in a gold jewellery or item. 24 Karat is the purest form, containing 99.9% gold. As high-purity gold is extremely soft to make ornaments, jewellers combine other metals or alloys to make jewellery. Thus, gold jewellery can be found in 22 Karat, 18 Karat or other measures.

Here are the common measures of gold and their purity:

The purity and composition of gold can be seamlessly understood based on the percentage of gold contained or the Karat of the gold item.

How Can I Check Gold Purity with Hallmark?

Hallmark is a closely associated term with gold jewellery. The Bureau of Indian Standards (BIS) tests gold jewellery for purity and provides a hallmark. To ascertain its purity, you can identify a BIS Hallmark logo on gold jewellery. This ensures you are purchasing gold that adheres to Indian authenticity standards. 

How Do You Test Gold for Purity at Home?

Besides the purity test by Karat and Hallmark logo, you might ask how to check gold purity at home. Here are some of the measures you can use at home to check the purity of gold:

1. Magnet Test: Pure gold or gold with higher Karat will not be attracted to a magnet. To check the purity of your gold item, you can place a magnet near it. If it gets attracted to the magnet, it will indicate lower Karat or a lack of pure gold composition. 
2. Float Test: Gold has a metal density higher than water. As a result, pure gold will sink in a bowl of water while an impure composition will float in the bowl of water. 
3. Vinegar Test: Vinegar poured on a gold item will not change the colour of the item. However, if the item has mixed impurities or no gold composition, it will change its colour when vinegar is poured. 
4. Colour and Weight: The colour of pure gold is vibrant yellow. If you notice a discolouration in your gold item, you need to check it for purity. Additionally, gold is a dense and heavy metal, so the weight of the item can also be a helpful indicator of authenticity. Ensure you check the weight of the metal to determine authenticity. 

How to Know Gold Purity with Professional Assistance?

If you are not satisfied with homely methods of testing gold purity, you might ask how to check gold purity with expert and professional assistance. Here are the professional-assisted methods to check gold purity:

1. X-ray Fluorescence Test: Jewellers use XRF machines to check the composition and percentage of gold in a gold item. These machines are designed with standards to identify the accurate composition. 
2. Ultrasound Test: This method helps to measure gold purity without damaging the gold item. It uses ultrasound waves to measure how dense a gold item is. Based on the density, the purity and composition are determined.
3. Acid Test: This method requires scratching a portion of the gold item on a testing stone before pouring the acidic solution. The reaction effectively determines the fineness and purity of gold.
4. Electronic Gold Testing: Based on the indicated Karat of a gold item, professionals may use an electronic gold tester, which applies a small electric charge to assess the metal’s conductivity. These devices are portable and convenient, commonly used for quick verification. 

However, it is important to note that while electronic testers can confirm the presence of Karat gold in an alloy, they cannot determine the exact gold composition or fineness with complete accuracy.

1. Fire Assay Method: This is a conventional method to check gold purity. It includes melting the gold item to check the composition and purity. Even though this is a highly accurate method, it leads to destroying the actual gold item to check purity. 

Importance of Gold Purity for Gold Loan

Banks and NBFCs (Non-banking Financial Corporations) lend money to borrowers with gold items as collateral. However, the amount of gold loan you receive depends on the Karat and weight of the gold item. 

For instance, a 100-gram gold item will naturally fetch a higher value than a 10-gram gold item. Even with the same Karat rating, more weight means more collateral value, resulting in larger loan eligibility.

Similar to the purchase prices, gold purity and weight play an integral role in gold valuation and loan amount determination. If you provide a 100-gram 24 Karat gold item as collateral to apply for a gold loan, a higher loan amount will be sanctioned for you compared to a 50-gram 22 Karat gold item. 

Another key factor is the prevailing gold price on the day your loan is sanctioned and disbursed. Lenders use the market rate of gold on that specific date to assess the value of your collateral. If gold prices are high on that day, you could qualify for a larger loan amount. Conversely, if prices dip, the eligible loan amount may be lower, even for the same item.

Final Words

To answer how to check gold purity, it is essential to know whether you want professional assistance, a home-oriented method or the Indian standard check. Based on your convenience, you can use various methods to check the purity and fineness of gold items you possess. 

If you prefer home-oriented methods, you can seamlessly choose a magnet test, float test or vinegar test. However, for accuracy, you might seek professional assistance. 

While gold remains a valuable investment, its daily price fluctuations may not suit everyone’s financial goals. For those seeking stable and predictable returns, Fixed Deposits (FDs) are a smart alternative.