Our Gemological Standards

Gemology at Rockstoc LLC

It is our standard to make every attempt to accurately describe goods as they appear, disclose treatments and conditions, report origin when known, and identify any other pertinent gemstone specifications as is reasonable in the trade.  Our commitment to ethical conduct is woven into every aspect of what we do.  In our daily work, we strive to cultivate a community that promotes equity in the mine to market pipeline.  We maintain these principles utilizing the following industry accepted standards.

Grading Methodology

Our grading methodology is conducted by skilled graders using 10x magnification, following the internationally accepted standards of diamond and gemstone grading established by the Gemological Institute of America (GIA), with additional guidelines based upon the Federal Trade Commission (FTC) and best industry practices.

Our graders may use any combination of the following tools:  microscope, 10x loupe, spectroscope, dichroscope, conoscope, polarizing filters, refractometer, Chelsea filter, Hanneman and other color filters, calibrated scales, millimeter gauges, calipers, thermal probes, incandescent and fluorescent light, LongWave and ShortWave ultraviolet light, and in some cases advanced technology such as photoluminescence, raman spectroscopy, FTIR spectrometry, and X-ray may be used.


              Terms & Conditions

              Rockstoc supplies the products listed on the under the following Terms and Conditions. Please read these Terms and Conditions, and our Privacy and Cookie Policies carefully before using any of our websites, or ordering from us.

              The Terms and Conditions apply to your use of any Rockstoc product you purchase from them; regardless of how you access the website, including any technologies or devices where our website is available to you at home, on the move or in a store

              We reserve the right to update these Terms and Conditions at any time, and any updates affecting you or your purchases will be notified to you, by us in writing (via email), and on this page.

              The headings in these Conditions are for convenience only and shall not affect their interpretation.

              We recommend that you print and keep a copy of these Terms and Conditions for your future reference...