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.
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
How It Works
Submit your cards
We screen for Black Gem eligibility
Only qualifying cards receive the sticker
Sell confidently
Stop Guessing. Start Knowing.
Submit Your Cards Today
Kevin Alcántara
Topps Chrome RC Auto /299
Chase DeLauter
Bowman Sterling Auto
Aaron Judge
Topps 14K Gold
Ryne Sandberg
1983 Donruss
Roman Anthony
Bowman Chrome Prospects /250
Paul Skenes
Topps Finest World's Finest /99
Jalen Brunson
Comic Court Issue #11
Kevin Alcántara
Topps Chrome RC Auto /299
Chase DeLauter
Bowman Sterling Auto
Aaron Judge
Topps 14K Gold
Ryne Sandberg
1983 Donruss
Roman Anthony
Bowman Chrome Prospects /250
Paul Skenes
Topps Finest World's Finest /99
Jalen Brunson
Comic Court Issue #11
Kevin Alcántara
Topps Chrome RC Auto /299
Chase DeLauter
Bowman Sterling Auto
Aaron Judge
Topps 14K Gold
Ryne Sandberg
1983 Donruss
Roman Anthony
Bowman Chrome Prospects /250
Paul Skenes
Topps Finest World's Finest /99
Jalen Brunson
Comic Court Issue #11
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
Sticker Selection & Pricing
Non-graded cards will be charged $1.50 and returned ungraded when below a market value of $25. Bulk tiers will be charged $75 for orders having less than a 15% sticker success rate.
Bulk Sort & Select
Professional organization. Smart selection. 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.
Send Us This...
Cards in any format
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
- 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.
- •Non-graded cards will be charged $1.50 and returned ungraded when below a market value of $25. Bulk tiers will be charged $75 for orders having less than a 15% sticker success rate.
- •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