03:04

Why Opals Are Nature’s Most Magical Gems. #gemology

01:24

The Gem That Made Madagascar’s Poorest Boy A Millionaire Overnight-And Why Yours Could Be Next

02:33

Koh-i-Noor Diamond's Deadly Curse

00:25

Ruby Hunt in Madagascar. #gemology

03:04

Why Gemologist is the Best Job in the World. Canticle of #gemology

03:03

Canticle of Gemology

02:54

Identify Rough Crystals in 5 Steps. #gemmology

02:04

Spot Fake Crystals: 5 Easy Gemology Hacks

03:02

AI’s Stealing Your Job, Gemologist?

05:29

What’s Your Country’s Gem? 20 Nations 20 Gems

03:04

Exploring Opals: Play of Color and Unique Properties

02:00

Fancy Diamonds: Rare Colors & Record Auction Prices

04:06

Why Do Diamonds Glow? The Science of Fluorescence Revealed

03:04

Why Diamonds Glow: The Science of Stunning Fluorescence

10:35

What’s Your Country’s Gem? 30 Nations 30 Gems (Part 1)

02:18

Estrela de Fura: Why This Ruby Broke Auction Records

05:05

Why are black diamonds so trendy? #gemmology

05:49

Emeralds: Why Kings Fought for These Green Gems. #gemology

03:45

Black Diamonds: Why They’re the Ultimate Gem Trend

03:12

Ruby Hunt in Madagascar: Risk, Dreams and Crushing disappointment

03:49

Lapis Lazuli: Afghan Origins to Global Gems

03:44

Ruby: King of Gems’ Ancient Secrets Unveiled

01:56

Carat vs. Carat: Debunking Common Jewelry Myths

02:01

Carat vs. Karat: Unraveling Jewelry's Biggest Myths

05:18

Ct versus Kt: a typical jeweler's mistake. #gemmology #jewelry

03:38

Carats vs Karats Jewelry Explainer

03:22

Why Gemstones Glow in Every Colors: Nature's Secrets

04:15

Why Do Gemstones Have Different Colors? Gemology Course

02:29

Sapphires Unveiled: Inclusions, Hardness, and Hidden Secrets

03:05

Victorian to Art Deco Rings: Decode the Eras

04:19

Recognizing Ancient Ring Styles - Jewelry and Gemology Course

03:43

Gemology's Great Debate: Shape or Cut?

04:52

Gemology Course. The Fascinating Shapes of Precious Stones

04:32

Gemology Unveiled: Your Sparkling Journey Begins!

06:30

Introductory documentary on Gemology - Free Gemology Course

02:20

Gemology Course: Exploring Ruby Colors and History

02:50

Gemology Course - Rubies: Discovering their Extreme Beauty

02:29

Free Gemology Course: Sapphires' Dazzling World

03:15

Gemology Course: The Dazzling World of Sapphires.

04:27

Emeralds: Power, Colors & Gemology Secrets Unveiled

05:52

Emeralds - The Secrets of the Gem Revealed in the Gemology Course

00:46

Madagascar Sapphires: Diego's Sapphires from Diego Suarez. Gemology

00:40

Natural Sapphires from Diego Suarez, Madagascar - Gemology

02:05

Glass-Filled Ruby: Scam or Gemology Breakthrough?

02:25

Glass-Filled Rubies: Deception or Gemological Innovation?

01:56

G.I.A. Diamond Certificates: Your Key to Trusted Quality

02:21

GIA Diamond Certificates: The Key to Reliable Quality

03:48

Diamond Fire & Scintillation: Sparkle Secrets Under the Microscope

03:04

Rough Diamond vs. Rough Moissanite: Scam Revealed Under the Microscope

03:03

Rough Diamond vs. Moissanite Scam: Microscope Secrets Exposed

02:17

Just Dropped My $100K Pink Diamond Grading Video. Gemology from Argyle

13:35

The Jade Market in Mandalay: Secrets of Myanmar's Gems

01:31

Gemology Course: How to Recognize a Synthetic Opal

01:31

Gemology: how to distinguish a synthetic opal. Gemology Course

01:31

Gemology Course: How to Distinguish a Synthetic Opal.

05:51

How to Differentiate Diamonds from Imitations - Gemology Course

05:46

Distinguishing a Diamond by Observing the Girdle- Gemology Course

05:51

Distinguish Diamonds: Girdle Tricks to Spot Fakes.

05:29

Gemology Course: Microscope Magic of Phenomenal Gems

09:45

Diamond Cutting Process in Surat: Documentary on Gemology