SummaryLearn how appraisers test gold purity using traditional touchstone methods and modern XRF machines. Understand hallmark verification, density checks, and how each process builds trust in the gold trade. Introduction When you buy or sell gold, you deserve full clarity.Appraisers use a combination of old and new testing methods to check purity and value.From rubbing […]
The Appraiser’s Toolkit: How Your Gold is Tested Read More »
SummaryLearn how to measure gemstone specific gravity using a modern single-pan electronic balance. This simple hydrostatic weighing method ensures fast, accurate results for stones under 3 carats using distilled water, a wire cage, and a lightweight beaker. Introduction Hydrostatic weighing is one of the most reliable methods to measure the specific gravity (SG) of gemstones.
Hydrostatic Weighing with a Modern Electronic Balance Read More »
Summary The spectroscope helps gemologists identify gemstones by analyzing how they absorb light.This tool separates stones like ruby, spinel, garnet, and jadeite through unique absorption spectra.Understanding these spectral lines makes gemstone identification faster, more reliable, and scientific. Learn how to use a spectroscope in gemology. Discover how this simple tool separates rubies, garnets, spinels, and
How to Use a Spectroscope in Gemology Read More »
Summary A refractometer measures a gemstone’s refractive index using total internal reflection. It’s a quick, non-destructive, and accurate test in gemology. You’ll need a clean surface, contact liquid, and proper setup for reliable results. Flat surfaces reveal optic properties; curved surfaces provide mean R.I. values. Introduction A refractometer is one of the most important tools
Refractometer in Gemology: A Simple Guide to R.I. Measurement Read More »
Summary A simple, practical guide to using a 10x triplet loupe for gemstone examination. Learn how to choose and test a quality loupe, avoid distortion, and use correct hand technique. If you’re expanding your gemological skills, explore related topics like Gemstone Types Explained and Understanding the Gemological Microscope for deeper insight into gem testing tools.
How to Use a Loupe for Gemstone Examination Read More »
Summary Red Spinel is often misidentified as ruby, a mistake that costs money and credibility. Learn how to distinguish them using simple tools and why honesty protects your reputation. Introduction For collectors and sellers, understanding red spinel vs ruby is crucial. Many people have mistakenly sold red spinels as rubies, including the famous Black Prince’s
Red Spinel vs Ruby: Avoid Misidentification Read More »
SummaryDiscover how a gemological microscope works and why it is essential for gemstone analysis. Learn about objective and ocular lenses, magnification calculations, and how to spot inclusions, cuts, and surface features. Perfect for beginners and gem enthusiasts. Introduction to the Gemological Microscope A gemological microscope is one of the most important tools for studying gemstones.
Understanding the Gemological Microscope: A Closer Look Read More »
