The D($)MVVintage Blog

Knowledge Is Gold

Expert guides on vintage jewelry, precious metals, gemstones, and smart buying. Written by a GIA-certified jeweler with 14 years of Tiffany & Co. experience. No fluff, no sales pitches. Just the information you need to make better decisions about jewelry.

01
Gold Testing

How to Tell If Gold Jewelry Is Real: 9 Tests You Can Do at Home

From the magnet test to acid testing and professional XRF analysis. Nine practical methods ranked by reliability, with step-by-step instructions for each.

14 min read · Published June 2, 2026
02
Gold Education

10K vs 14K vs 18K vs 24K Gold: What the Karats Actually Mean

Gold purity percentages, how alloy metals change color and durability, pricing implications, and which karat is best for different types of jewelry and lifestyles.

15 min read · Published June 2, 2026
03
Diamond Education

What Is GIA Certification and Why It Matters When Buying Diamonds

The 4Cs explained, how GIA grading works, what a GIA report contains, how to read one, and why it matters for both purchasing and resale value.

16 min read · Published June 2, 2026
04
Collecting

Vintage vs. Antique Jewelry: What's the Difference and Why It Matters

Clear definitions for vintage, antique, and estate jewelry. Era-by-era guide from Georgian to Mid-Century Modern, with identification tips and value implications.

15 min read · Published June 2, 2026
05
Buying Guide

How to Buy Estate Diamonds Without Getting Burned

What to look for, red flags to watch for, common scams in the estate market, how pricing works vs. retail, and the appraisal process.

14 min read · Published June 2, 2026
06
Metal Guide

Sterling Silver vs. White Gold vs. Platinum: A Complete Comparison

Durability, hypoallergenic properties, cost, maintenance requirements, and appearance over time. Which white metal is best for different types of jewelry.

13 min read · Published June 2, 2026
07
Gemstones

The Big Three: A Complete Guide to Emeralds, Rubies, and Sapphires

Origin importance, color grading, treatments and enhancements, pricing factors, famous stones, and care instructions for the world's most prized colored gems.

17 min read · Published June 2, 2026
08
Care Guide

How to Clean Vintage Jewelry Without Damaging It

Safe cleaning methods by material type: gold, silver, platinum, and every major gemstone category. What to avoid, when to see a professional, and storage tips.

13 min read · Published June 2, 2026
09
Investment

Is Gold Jewelry a Good Investment? What the Numbers Actually Say

Gold as a store of value, scrap value vs. craftsmanship value, the vintage premium, historical price trends, comparison to bullion, and practical buying considerations.

14 min read · Published June 2, 2026
10
Gemstones

Beyond Diamonds: The World of Moonstones, Opals, and Unconventional Gems

Moonstone properties and lore, opal types and grading, labradorite, tourmaline, alexandrite. Why alternative gems are gaining popularity, care considerations, and cultural significance.

16 min read · Published June 2, 2026