Gem Weight Estimator vs Caratify

AIGS’s Gem Weight Estimator (GWE) - which is calibrated for use with a wide variety of gem materials - allows users to quickly estimate the weight of a faceted gemstone, based on its cutting style and dimensions. This information can then be archived - along with a photograph of the stone in question - for future reference.

A comprehensive calculation and inventory tool designed specifically for goldsmiths, jewelers, and precious metal collectors. This application provides precise offline tools for material analysis, casting preparation, and collection management. CORE FEATURES FOR PROFESSIONALS & COLLECTORS Density & Specific Gravity Testing: Calculate the density of items to assist in identifying precious metals and detecting irregularities without physical or chemical testing. Wax-to-Metal Casting Calculator: Accurately convert wax model weights to required metal weights for workshop casting. Includes specific gravity presets for gold alloys, silver, platinum, palladium, and bronze. Purity & Proportion Analysis: Calculate the exact fine metal content in mixed alloy items and convert between standard purities. Jewelry Inventory Management: Document your collection entirely on your device. Store item weights, material specifications, appraisal values, and visual records. Precision Unit Conversion: Instantly convert weights between Karat, Ounces (oz), Grams (g), and Pennyweight (dwt) using industry-standard measurements. Ring Sizing Tools: Convert and measure ring sizes across international sizing standards. TECHNICAL SPECIFICATIONS Local Data Storage: All collection data and images are stored locally on your device. The app functions entirely offline and does not require server connectivity. Workshop Optimized: Includes a Dark Mode interface tailored for low-light workshop environments to reduce eye strain. Customizable Parameters: Adjust default units and measurement standards to match your regional workflow.