Branded diamonds are attached to famous names in the diamond jewelry business, which makes them more prone to carrying higher quality standards. The name is what customers trust the most in such cases, and no jeweler would let their name be sullied by complaints of subpar quality. Non-branded diamonds, on the other hand, require you to carefully look into them and single out any defective or undesirable traits before buying.
This is another benefit that branded diamonds bring. Every notable brand reveals detailed information regarding aspects such as the manufacturer, company history, and, most importantly, gem sourcing. This gets served up to you in a proverbial platter because you are paying more. Non-branded diamonds simply leave you to guess at such specifics.