How We Grade

DiamondCore™ V6.18 is our proprietary grading system designed for consistency, transparency, and accuracy. Learn how we evaluate every card.

The Grading Process

1

Card Submission

Submit your card for grading. We accept cards via Email (pre-grade), Booth (local service), or Mailed In (professional grading).

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2

Image Capture & Analysis

We capture high-quality images of your card (front and back) and analyze them using DiamondCore™ V6.18 AI technology.

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3

Five-Category Evaluation

Each card is independently scored across Centering, Surface, Corners, Edges, and Eye Appeal using the Flaw Ladder methodology.

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4

Score Calculation

Weighted formula combines all five categories into an Overall Score (1-100) with Diamond Rating and Grade Tier Label.

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5

Certificate & Slab Assembly

Your card receives a unique Certification ID, professional certificate, and (for Mailed In orders) is assembled in a premium slab with label.

Scoring Scale

1-100 point scale with five independent categories weighted by importance.

Centering: 25%
Surface: 25%
Corners: 20%
Edges: 15%
Eye Appeal: 15%

Diamond Ratings

◆◆◆◆◆ 99-100 (Pristine)
◆◆◆◆◇ 80-98.9 (Gem Mint)
◆◆◆◇◇ 65-79.9 (Very Good)
◆◆◇◇◇ 45-64.9 (Good)
◆◇◇◇◇ 1-44.9 (Fair/Poor)

Flaw Classification

Light

Visible under magnification only

Minor

Visible on close inspection

Major

Clearly visible at normal distance

Frequently Asked Questions

Ready to grade your cards?

Start Grading