According to the text snippets, ethical and eco-friendly jewelry brands prioritize minimizing the environmental impact through practices such as rehabilitating old mine sites, planting trees, and using recycled materials. Sustainable jewelry companies also adhere to high environmental standards in all aspects of production. Examples of ethical and sustainable jewelry brands include AGMES, Aurate, Brilliant Earth, and Smartglass Jewelry. These brands offer a variety of accessories, from lab-grown gemstones to pieces made from post-consumer glass bottles. It's important to note that the term "sustainable jewelry" can refer to any type of jewelry that has a lesser impact on the environment and workers involved in its production.