Jewelry Information

Introduction

Diamonds

Colored Gemstones

Precious Metals

Fine Watches

Comparison Shopping

Scams

  Huge Discounts

  Investment Gems

Jewelry Appraisal

Jewelry Insurance

 

Colored Gemstones

Introduction

Emerald

Ruby

Sapphire

Other colored gemstones

Colored Gems - the 4 Cs

  Color

  Cut

  Carat

  Clarity

Colored Gem Certificates

Synthetics and Simulents

Gem Treatments

Fracture Filling

Comparison Shopping

GemQuote™ Shopping Checklist (pdf)

Colored Gems – The 4 Cs

A gem’s value is based on four factors:

Carat Weight
Color
Clarity
Cut Proportions

Carat weight refers to the size of the stone. The other three terms describe the gem’s quality.

One way to think about the 4Cs is to imagine a seesaw, with size (carat weight) on one end and quality (the other three Cs) on the other.

 


Within a given price range, as size increases, quality must diminish. If quality improves, size must diminish. In other words, you can either spend more per carat for a higher-quality stone, or you can get a larger stone and settle for lower overall quality.