Buying real or man-made diamond rings is completely your choice. Natural diamonds are rare whereas man-made diamonds are created within hours. Even though there is no noticeable difference between the two and not even an expert jeweller can tell the difference with naked eyes, sustainable diamonds are a good choice if you are searching for an environment-friendly and affordable option. If you are looking for an investment then it is not the thing to spend on since lab-grown diamonds have low to no resale value.