Measure purity through Karat: Make sure what you desire is what you get and that the gold you are purchasing is genuine. Karat is the unit of measurement for gold purity; the greater the karat, the purer the gold. As a result, 24-karat gold, 22-karat gold, and 18-karat gold are the purest forms in that order. In the instance of 24k gold, all 24 components are pure gold with exceedingly low impurities. If you are acquiring gold for investment purposes, 24K is appropriate; otherwise, 22K should do. The price of 24K gold is greater than that of lesser Karat gold.
 
Refinery - It is beneficial to know the refinery from which the gold bar was refined when making a purchase. Buying gold bars that have been refined at well-known refineries provides the greatest degree of purity. In India, one such refinery is MMTC-PAMP (a joint venture between the public sector MMTC and Switzerland's PAMP SA).
 
Check buyback policy - When purchasing gold online, always verify the website's or seller's return or repurchase policy. Most major gold chains now have online storefronts that accept returns and exchanges. However, the gold exchange policy has stricter restrictions and limitations than other commodities offered online. As a result, it is critical to read the terms and conditions thoroughly before making a purchasing choice.