You can create your business around just selling the stones themselves or creating jewelry with. Selling precious gems and stones can be as simple as setting up a small stand at a craft fair or can become a much larger business that includes jewelry design. Whether you just want to sell the stones and gems themselves or you want to delve into jewelry and other gem stone uses, you can make a lucrative part- or full-time income doing. Learn as much as you can about gemology. Although being a gemologist does not require a degree, it is important can you make money selling gems become very knowledgeable in the different types of stones, instruments and laboratory services that are available. Contact the Gemological Institute of America or another gem trade organization, and take their online or on-campus classes.