FAQ Frequently Asked Questions

Gemix is a trading card authentication and grading service based in Japan, operated by Corrado Co., Ltd. in Yokohama. Our certified graders and AI evaluate card condition under strict standards, then seal each card in a Japan-made protective slab. We accept submissions from within Japan and worldwide.

Gemix is a trading card grading service featuring Japan's first detailed grading report that fully visualizes grading evidence. We deliver grading quality that meets global standards, paired with slab designs trusted by collectors worldwide. Visit our features page to learn more.

Gemix discloses grading evidence through our patent-pending Grading Report. Beyond the grade and subgrades, Gemix uses 12+ grading codes to specify the type, location, and impact of every defect, alongside high-resolution images. We also stand apart with Japan-made slabs and anti-counterfeit laser engraving on stainless steel.

Trading card grading is a service that verifies a card's authenticity and evaluates its condition, assigning a numerical score. Graded cards are sealed in a tamper-proof slab, helping establish market value and protect your collection.

Grading fees start from 3,500 JPY, based on the declared value of your card. For the complete fee schedule, please visit our Pricing page.

Set the declared value based on the card's raw (ungraded) market value, referencing prices from marketplaces and auction sites. The declared value is used to calculate the grading fee.

We accept credit card payments with Visa, Mastercard, JCB, American Express, Discover and Diners Club.

Cancellation is possible before you ship your cards to us. Once cards have been shipped, cancellations are not accepted.

Yes. Once grading is complete and payment has been finalized, a receipt will be automatically sent to your registered email address.

The following cards are eligible for grading. More card titles will be added over time. - Pokémon Card Game (including old backs) - Yu-Gi-Oh! OCG Duel Monsters - Yu-Gi-Oh! Rush Duel - ONE PIECE Card Game - Weiß Schwarz (excluding Blau and Rosé) - Duel Masters - Dragon Ball Heroes - Super Dragon Ball Heroes - Dragon Ball Super Divers - Dragon Ball Super Card Game Fusion World Accepted card sizes are as follows. - 63mm x 88mm (Standard Size) - 59mm x 86mm (Small Size) - Thickness of 0.5mm or less

You can submit up to 100 cards per submission. If you have more than 100 cards, please split them into separate submissions.

Place cards in sleeves, then protect them with toploaders or cardboard to prevent damage during transit. For detailed packing instructions, please see our Shipping Guidelines.

Yes, we accept submissions from around the world. For international shipping details, please refer to our International Shipping Guidelines.

Yes, an account is required to submit cards for grading. Registration is free and only requires an email address and password.

From the time your cards arrive at our facility, the Regular service is completed within 60 business days, the Express service within 15 business days, and the Super Express service within 5 business days. During peak periods, processing may take slightly longer.

Your submission will typically appear in your account within 5 business days of card arrival. Processing times may vary depending on current volume.

Once your submission status is updated to "Returned" on your account page, the grading results and Grading Report become available online. You will also receive an email notification when the status changes. Please note that it may take up to 24 hours after actual shipment for the status to update.

After grading is complete, return shipments are typically processed within 5 business days. Once shipped, your submission status will be updated to "Returned" on your account page, and you will receive an email notification.

For security reasons, we do not disclose details about our business days or hours of operation. Inquiries are handled on business days in the order they are received.

Certified graders and AI evaluate the front and back of the card, centering, corners, and edges based on strict grading standards. For detailed grading criteria, please visit our Grading System page.

If the grade does not meet the selected Minimum Grade (MG), you can choose to either have the card returned as-is, or have it sealed in a slab as authentication-only. Shown in your submission details: Below MG + Return → MG Not Met Below MG + Authentication → A (cert number is assigned) In both cases, the fee for the selected service level will apply. In both cases, Grade and Grading Report will not be provided.

The detailed criteria for centering evaluation are not publicly disclosed. However, a perfect score of 10 does not require an exact 50:50 ratio — a certain tolerance range is applied. The back of the card has a wider tolerance range than the front.

Rather than comparing the raw widths of the top and bottom borders, we measure against the official top-to-bottom border ratio for these cards, accurate to the pixel.

Card warping itself is not a grading criterion. However, significant warping may affect the accuracy of centering measurements. Additionally, if the warping is severe, the card may not fit in the slab and could be returned as Oversize.

Generally, it does not affect the grade. However, if the misalignment exceeds the standard threshold or if there is an embossing error, an Error notation will be added.

Embossing that shows through on the back does not affect the grade.

Unfortunately, we do not offer grading services for signed cards at this time.

We remove dust and debris using an air duster before grading, but we do not perform any cleaning that could potentially affect the card, such as wiping.

The Grading Report is Gemix's patent-pending report. Beyond just a numerical grade, it documents the type, location, and impact of every defect using 12+ grading codes, along with high-resolution card images — fully visualizing why each card received its score. Available online anytime. Note: For cards graded below 9 with a certain number of noted defects, the report automatically switches to a simplified, easier-to-read layout.

Enter the certificate number printed on your slab into our Cert Verification page to view the grading results online.

The following statuses may appear in your submission details: -Unable to Grade — The card was determined to be ineligible for grading. -Questionable Authenticity — The card was flagged as a suspected counterfeit during authentication. -Alteration Detected — The card was flagged as showing suspected artificial modification such as inking or trimming. -Oversized — The card exceeds the maximum size accepted for grading.

Card images are taken immediately after removal from their sleeve, before any dust removal with an air duster, so minor dust particles may appear in the photographs. Grading is performed after dust removal with an air duster, so any dust visible in the images does not affect the evaluation.

Unfortunately, we're unable to retake card photos.

Graded cards are sealed in our protective slab and returned via Yamato Transport within Japan. For international returns, we recommend Blackship.

We handle card damage that occurs under our care in accordance with our Terms of Service. Please note that damage resulting from insufficient packaging by the sender may not be covered.

We do not provide individual tracking numbers. If you are registered with Yamato Transport's Kuroneko Members service, you can receive delivery notifications and track your shipment status.

Unfortunately, we don't offer reholdering, paid or free.

A crossover is a service where we remove a card from another grading company's slab, re-grade it, and seal it in a Gemix slab. *Available for PSA, BGS, and CGC slabs only.

Crossover requires an additional fee of 2,200 JPY on top of the standard grading fee. For details, please visit our Pricing page.

With our crossover service, the card is always removed from its original slab before evaluation. If the grade falls below MG, the card will be returned raw (without a slab).

After logging in, you can reach us through the inquiry form in your account dashboard. Our dedicated support team will assist you.