What Is 10k Gold and Who Should Choose It?
Learn what 10k gold means, how it differs from 14k and 18k, its durability, price, and who
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Articles
What I've learned crafting jewelry in Mexico since 2018, explained without fluff.
How to Locate the Gold Hallmark on a Piece of Jewelry
Learn where the gold hallmark (karat stamp) is hidden on jewelry, how to read it, and why
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Gold Hallmark 417, 585, 750 Meaning: How to Read Gold Stamps
Learn what the 417, 585, and 750 hallmarks on gold jewelry mean, how to verify authenticit
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What Do Gold Karat Stamps Mean? A Complete Guide for Buyers
Learn the meaning of 10k, 14k, 18k, 22k, and 24k gold stamps, how to verify authenticity,
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How to Tell If Gold Is Real When It Has No Stamp or Mark
Learn step‑by‑step how to evaluate unstamped gold, from visual tests and density checks to
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How to Tell If Earrings Are Real Gold – A Complete Guide
Learn step‑by‑step methods to verify real gold earrings, understand karat differences, tes
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How to Tell If a Ring Is Real Gold – Expert Guide
Learn proven methods to verify real gold rings, understand karat differences, and get trus
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How to Tell If Gold Is Real: A Complete Guide for Jewelry Lovers
Learn how to tell if gold is real with practical tests, hallmarks, and expert tips. Discov
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How to Test If Gold Is Real: The Nitric Acid Method Explained
Learn the step‑by‑step nitric acid test for authentic gold, understand karat differences,
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How to Test Gold with Baking Soda: Step‑by‑Step Guide
Learn the reliable baking‑soda test for gold, how it works, what it reveals about karat pu
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How to Tell If Gold Is Real: Myths, Tests, and Trusted Verification
Discover the truth behind the bite test for gold, learn reliable methods to verify real go
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How to Test Gold Authenticity Without the Fire Test
Learn why the fire test for gold is rarely worthwhile, how to verify gold authenticity saf
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How to Test Gold at Home: Lemon Test Myth or Reality?
Discover the truth behind the lemon test for gold, learn reliable methods to verify authen
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How to Tell If Gold Is Real: The Vinegar Test Explained
Discover whether the vinegar test can reliably identify real gold, learn scientific method
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How to Tell if Gold Is Real: The Magnet Test Explained
Learn how to tell if gold is real using the magnet test. Carlos Montejano of Gold Shield e
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How to Tell If Gold Is Real at Home: An Honest Guide
Learn how to tell if gold is real with simple at-home tests. I'm Carlos Montejano, a jewel
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How to Tell If Jade Is Real: A Jeweler's Guide to Value
Learn how to tell if jade is real with at-home tests for hardness, sound, and temperature.
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Moissanite vs Lab Diamond: Which Stone Is Right for You?
I'm Carlos Montejano, a jeweler. Learn the key differences between moissanite and lab-grow
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How to Tell if a Gold Chain is Real: A Jeweler's Guide
Is your gold chain authentic? I'm Carlos Montejano, a jeweler, and this guide shows you ho
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Gold vs. Silver Jewelry: Durability, Cost & Long-Term Value
Carlos Montejano of Gold Shield compares gold vs. silver jewelry. Discover the real differ
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How to Care for Sterling Silver Jewelry So It Lasts
I'm Carlos Montejano, a jeweler. Learn how to care for sterling silver with my expert guid
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Why Does Silver Tarnish? A Jeweler’s Guide to Sterling
Why does silver tarnish? Carlos Montejano, founder of Gold Shield, explains the science be
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How to Tell If an Opal Is Real: A Jeweler's Guide
A genuine opal has an irregular play-of-color and a uniform body. Learn how to tell if an
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How to Tell if Aquamarine is Real: A Jeweler's Guide
Learn how to tell if aquamarine is real with expert tips from jeweler Carlos Montejano. Di
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How to Read a Gemstone Grading Report: What Matters Most
Learn how to read a gemstone grading report from jeweler Carlos Montejano. Understand the
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How Much Is Amethyst Worth and How to Tell If It's Real
As a jeweler, Carlos Montejano explains how much an amethyst is truly worth. Learn to eval
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How to Tell If a Sapphire Is Real: A Jeweler's Guide
Learn how to tell if a sapphire is real with at-home tests and professional tips. Carlos M
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How to Tell if a Ruby is Real: A Jeweler's Guide
Learn how to tell if a ruby is real with expert tips from jeweler Carlos Montejano. Identi
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How to Tell If an Emerald Is Real: A Jeweler's Guide
Learn how to tell if an emerald is real with expert tips from jeweler Carlos Montejano. Di
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Sterling Silver vs. 925: What's the Real Difference?
Carlos Montejano of Gold Shield explains the difference between sterling silver and 925 si
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Why Does White Gold Turn Yellow? A Jeweler's Expert Guide
White gold turns yellow as its rhodium plating wears off, revealing the natural yellowish
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Why Are Gold Prices Different at Jewelry Stores? A Guide
Wondering why gold prices vary so much between jewelers? Learn about the spot price, karat
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10k and 14k Gold Price Per Gram: A Founder's Guide (2026)
Learn how to calculate the price per gram of 10k and 14k gold. Carlos Montejano, founder o
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How to Tell if Gold Is Real: A Jeweler’s Guide to Testing
Learn how to tell if gold is real with professional tests you can do at home. I'm Carlos M
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How to Tell if Jewelry is Real: A Founder's Guide
Learn how to tell if jewelry is real with this expert guide. Founder Carlos Montejano expl
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Is Mexican 10k gold real?
What 10k means, how it is verified and why it is real gold.
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10k vs 14k vs 18k gold
Purity, color, hardness and price compared so you choose well.
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How to spot authentic .925 silver
The hallmark, home tests and the most common mistakes.
Read in Spanish →English versions of each guide are on the way.