100 % enthusiasm is guaranteed! We are a company from Bavaria, Germany and have years of experience in selling gemstones and diamonds. We sell only natural gemstones and diamonds. If there is an treatment like heating, enhancement, etc.you will be informed about it in the offer description. As a matter of principle, we do not sell synthetic or lab created items. 100 percent enthusiasm is guaranteed on all of our purchases. If you have any question, feel free to contact us at the gemrock contact seller page. We will respond as soon as possible.