The Stone Value Bible ENGLISH/SPANISH

Never overpay for a gemstone or sell rare rough under market value again.

The Stone Value Bible (88 Pages) is the definitive field guide used by independent gem hunters, dealers, and collectors to determine the true commercial value of over 50 precious and rare gemstones in seconds.

What’s Inside:

The 4-Point Field Appraisal Framework: Instantly evaluate Color (the 75% saturation rule), Clarity (10x loupe inclusion mapping), Cut proportions, and Carat price cliffs.

The Treatment Penalty Matrix: Know the exact mathematical discounts for heat, irradiation, oiling, and lead-glass filling (before you make an offer).

The Real Market Pricing Method: How to bypass inflated retail appraisal certificates and extract true wholesale transaction prices using real auction data.

50-Gemstone Price Database: Real-world price-per-carat ranges for 20 sovereign investment gems (Diamonds, Colombian Emeralds, Burmese Rubies, Paraíba Tourmalines) and rare collector species.

Lab Submission & Insurance Guide: Exactly when to send a stone to GIA/SSEF/Gübelin and how to document your collection for insurance.