215-465-6500

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    • Home
    • Services
    • Pietro Diamonds
    • Jewelry
      • Brand Lines
      • Rings
      • Necklaces
      • Bracelets
      • Earrings
    • Store Hours
    • Contact Us
  • Home
  • Services
  • Pietro Diamonds
  • Jewelry
    • Brand Lines
    • Rings
    • Necklaces
    • Bracelets
    • Earrings
  • Store Hours
  • Contact Us

Pietro Jewelers

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Diamond Tutorial

DIAMOND CHART

4 C's

 The 4 C’s of diamonds—Cut, Color, Clarity, and Carat weight—are the universal standard established by the GIA to evaluate a diamond's quality, rarity, and value. Cut determines brilliance, color measures lack of color, clarity assesses internal/external flaws, and carat measures weight. Cut is generally considered the most important factor for sparkle. 

  • Cut (Sparkle): Evaluates how a diamond's facets interact with light. It is ranked from Excellent to Poor. A well-cut stone (like "Excellent" or "Ideal") will appear more brilliant, while a poor cut can make a diamond look dull regardless of its other qualities.
  • Color (Colorless to Yellow): Measures the absence of color in white diamonds, graded on a D-to-Z scale. D is colorless (most rare/expensive), while Z has a light yellow or brown tint.
  • Clarity (Purity): Measures the internal inclusions and surface blemishes. Ratings range from Flawless (FL) to Included (I1-I3). VS2 or SI1 grades often offer the best value as they are typically "eye-clean".
  • Carat Weight (Size): Measures the diamond's weight (1 carat = 200 milligrams). As carat weight increases, price increases exponentially due to rarity, though a slightly lower carat weight (e.g., 0.95 vs. 1.0) can offer better value. 

Appraisals

Appraisals are not just about knowing the value of your jewelry, but understanding its history. Our team to can evaluate your jewelry's value and story.


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