G S SACHIN

I am G S Sachin, a gemologist with a Diploma in Polished Diamond Grading from KGK Academy, Jaipur. I love writing about jewelry, gems, and diamonds, and I share simple, honest reviews and easy buying tips on JewellersReviews.com to help you choose pieces you’ll love with confidence.

Airport Security & Fine Jewelry: What Really Happens at TSA/Schengen?

Airport Security & Fine Jewelry: What Really Happens at TSA/Schengen?

Intro: Traveling with fine jewelry raises two questions: what happens when your pieces go through airport security, and how do you protect their value and avoid hassles with TSA or Schengen-area checkpoints? This guide explains the screening process, what security officers look for, and practical steps to keep jewelry safe and compliant. I’ll explain the […]

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Selling Your Diamond in Paris vs Miami: Which Market Pays Better?

Selling Your Diamond in Paris vs Miami: Which Market Pays Better?

Intro — Deciding whether to sell a diamond in Paris or Miami comes down to paperwork, buyer types, taxes, and what kind of stone you have. Both cities are active jewelry markets, but they pay differently depending on size, quality, certification and whether you sell mounted or loose. Below I break down the real factors

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Are Lab-Grown Prices Higher in Europe? We Compared 5 Cities in 2025

Are Lab-Grown Prices Higher in Europe? We Compared 5 Cities in 2025

Intro Are lab-grown diamond prices higher in Europe in 2025? Short answer: sometimes — but it depends on where you buy, the stone’s specs, and whether the price you see includes taxes and setting costs. I compared representative retail prices in five European cities for two common lab-grown stones and explain the reasons behind the

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Ring Size Twins? The US 6 vs EU 52 Confusion Explained (Printable Cheats)

Ring Size Twins? The US 6 vs EU 52 Confusion Explained (Printable Cheats)

Intro The short answer: a US size 6 usually equals an EU 52. The long answer explains why people get mixed up, how each system measures size, and practical cheats you can print and use to avoid costly mistakes. I’ll show exact millimetres, a simple printable method, and the resizing and fit details that most

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Nickel-Free Jewelry: EU Rules vs US Reality—Will Your Earrings Pass the Skin Test?

Nickel-Free Jewelry: EU Rules vs US Reality—Will Your Earrings Pass the Skin Test?

Nickel-Free Jewelry: EU Rules vs US Reality—Will Your Earrings Pass the Skin Test? Nickel allergy causes red, itchy rashes for millions of people. Jewelry is a common trigger because metal touches the skin for hours or days. In the European Union, regulators set clear limits on how much nickel can leach from jewelry. In the

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VAT vs Sales Tax on Jewelry: Who Actually Pays More at the Counter?

VAT vs Sales Tax on Jewelry: Who Actually Pays More at the Counter?

Intro Taxes make a big difference to the final price of jewelry. Which system charges more at the counter — VAT (value-added tax) or a retail sales tax — depends on rates, what is taxed (goods versus services), and whether the price tag already includes tax. Below I explain the mechanics, show clear calculations with

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Hallmark vs Karat Stamp: Why Your 18K Ring Looks Different in London vs New York

Hallmark vs Karat Stamp: Why Your 18K Ring Looks Different in London vs New York

Intro: If you own an 18K ring bought in London and another bought in New York, they can look, feel, and even wear differently — and not because one is “fake.” The key reasons are twofold: the difference between a legal hallmark and a manufacturer’s karat stamp, and the different metal alloys and finishing practices

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Comfort-Fit for Small Fingers: When It Helps—and When It Bulks

Comfort-Fit for Small Fingers: When It Helps—and When It Bulks

Intro: Comfort-fit rings have a rounded interior that makes them easier to slide over a knuckle and more pleasant to wear for long periods. For people with small fingers, that same rounded interior can either be a quiet win—no pinching and less rotation—or an unwanted source of bulk that makes the finger look and feel

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Tourist Traps: Souvenir Gemstones That Aren’t What They Seem

Tourist Traps: Souvenir Gemstones That Aren’t What They Seem

Tourist Traps: Souvenir Gemstones That Aren’t What They Seem Buying a gemstone while traveling feels like taking home a piece of the place. But many souvenirs are altered, assembled, or outright imitations. Sellers do this because it’s cheaper and because many buyers want something bright and pretty, not a durable investment. Knowing the common tricks

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Lab Spectrometers for Jewelers: The Gadget Changing Gem ID

Lab Spectrometers for Jewelers: The Gadget Changing Gem ID

Lab spectrometers are the gadget quietly changing how jewelers identify gems. They turn light and tiny vibrations into chemical fingerprints. That makes many IDs faster, more objective, and often non-destructive. But they do not replace skill. They give measurable data you can trust—if you know what the numbers mean and what each instrument can and

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