Card Grading
Global Card Certification
Sports cards and memorabilia authentication with trusted, verified, market-ready certification
Grade Like a Pro. Sell Like It's Already a 10.
The GCC Black Gem™ identifies cards that project at GEM MINT level—before you spend on grading.
Why Black Gem?
What Makes It Different
The Black Gem is not a guess—it's a professional evaluation backed by experience. Each sticker is:
Black Gem Pricing
Proof You Can Trust
With over 20 years of grading and consulting experience, Director Alan Kelly delivers a 95% success rate on graded outcomes.
Fewer surprises
More accurate submissions
Stronger resale results
How It Works
Submit your cards
We screen for Black Gem eligibility
Only qualifying cards receive the sticker
Sell confidently or submit for grading
Stop Guessing. Start Knowing.
Submit Your Cards TodayBlack Gem™
GCC Certified
Gold Sticker
Grades 7–10
Featured: Michael Jordan SkyBox Card
This card showcases our Gold Sticker certification for high-grade sports cards. Our authentication process ensures authenticity and enhances collector confidence.
Our Sticker System
Three distinct certification levels based on grade and rarity
Gold Sticker
Best for
High-grade cards, investment pieces
Green Sticker
Best for
Mid-grade cards, bulk submissions
Silver Sticker
Best for
Rare, unique, or vintage cards
Flexible Pricing Options
Choose the service level that fits your needs and budget
Bulk Pricing
Perfect for large collections and dealers
Regular Pricing
Flexible options for any collection size
Bulk Sort & Select
Professional organization. Smart selection. Pre-grade ready.
Submit 100+ cards in any condition or packaging—boxes, binders, sleeves, or mixed collections—and GCC transforms your submission into a fully organized, documented, grade-ready inventory.
Cards with an estimated value of $25+ are identified, selected, and professionally prepared for grading.
Unsorted collection
Send Us This...
Cards in any format
Organized & graded
We Send You This.
Fully organized and grade-ready
How It Works
1. Submit
Send in 100+ cards in any format. No sorting required.
2. Processing
We organize, sort, and structure your entire submission.
3. Select
Cards valued at $25+ are selected for the program.
4. Grade Preparation
Each selected card is placed in a premium semi-rigid holder with a GCC tamper seal.
Verification & Transparency
Every selected card includes full traceability:
Unique serial number assigned per card
Full digital inventory report provided
Serial numbers verifiable through GCC Cert Lookup
What You Receive Back
- Fully organized and structured
- Professionally packaged for storage or resale
- Pre-grade prepared in protective sleeves & semi-rigid holders
- Digitally documented with full inventory records
- Ready for encapsulation or market sale
Pricing
$25+ value threshold applies
Important Submission Guidelines
- •Sports cards from 1985–1996 historically have a lower percentage of qualifying for GCC grading.
- •If less than 15% of cards qualify, a $75 service charge applies.
- •100-card minimum required. Cards may be submitted in boxes, binders, and/or holders.
- •Shipping credits: 100+ cards → $10 · 250+ cards → $25.
Save time. Save money. Upgrade your collection.
Our Three Pillars
The foundation of our card certification philosophy
Trusted
Built on decades of experience and industry relationships. Our reputation speaks for itself.
Verified
Every card undergoes rigorous authentication using advanced techniques and industry-standard processes.
Market-Ready
Our certification enhances marketability and buyer confidence, making your cards easier to sell.
Ready to Certify Your Sports Cards?
Submit your sports cards for professional authentication and sticker certification
Submit Sports Cards Now