SummaryLearn about diamond fluorescence, the blue glow seen under UV light. Discover when it enhances color, reduces sparkle, and tips for buyers. IntroductionIf you’re buying a diamond, you may notice fluorescence listed on its certificate. This refers to the glow some diamonds emit under ultraviolet (UV) light. Most diamonds show a blue glow, though rare
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 »
Summary The IndiRAM Portable Raman Spectrometer enables quick, non-destructive gemstone testing with dual mode acquisition, high throughput, and built-in spectral reference. It’s compact, field-ready, and suitable for lab and gem trade applications. Introduction The IndiRAM™ Portable Raman Spectrometer brings fast, non-destructive gemstone analysis to your lab or field setup.With dual mode signal acquisition, high Raman
IndiRAM Portable Raman Spectrometer for Gemstone Testing 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 Foldscope is a $1 paper microscope created by Manu Prakash and Jim Cybulski at Stanford University.It uses simple folding techniques and a small lens to deliver strong magnification.Used by schools, health workers, and researchers worldwide, Foldscope makes science education and exploration affordable for everyone. Introduction Foldscope is one of the most inspiring innovations in
Foldscope: The $1 Paper Microscope Revolutionizing Science 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
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.
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
SummaryDirty jewellery can reduce your payout when selling gold in Kerala. Learn how dirt affects melting loss and how to clean your pieces safely at home. Introduction When you decide to sell gold in Kerala, every gram matters. You might think a quick trip to the jeweller is enough, but uncleaned jewellery can secretly reduce
Clean Gold Before Selling in Kerala for Higher Payout Read More »
