Best Graded Onix Cards: Collector & Investor Guide

Onix remains one of the most recognizable Rock-type Pokémon from the earliest days of the franchise, helped by its anime battles, Brock association, and memorable long segmented design. For collectors, Onix cards offer a nice mix of affordable nostalgia, vintage WotC-era printings, and a few standout modern appearances that bring fresh artwork and tougher high-grade condition standards. Its key collecting eras span Base Set through the Neo period, then reappear in select EX, Diamond & Pearl, and Sword & Shield releases. Graded PSA, BGS, and CGC slabs matter because centering, print lines, edge wear, and holo scratching can dramatically change desirability. For Onix collectors, slabs make it easier to compare condition, verify authenticity, and track market value over time.

Prices as of Oct 21, 2026

1. 1

   Onix

   Base Set · 1999 · 56/102

   

   One of the original English Onix cards from the first Pokémon TCG set. It remains a foundational pickup for character collectors building a vintage slab run.

   Prioritize clean edges and strong centering, since many Base Set commons were played heavily.

   Estimated value: $1.49

2. 2

   Onix

   Base Set · 1999 · 56/102

   

   The Shadowless print is a more desirable early version of the iconic Base Set Onix. It is a staple target for collectors who want a more premium first-era slab.

   Shadowless copies can command stronger demand, so verify the print style carefully before buying.

   Estimated value: $1.49

3. 3

   Onix

   Fossil · 1999 · 69/62

   

   Fossil Onix is another classic Wizards-era printing that fits naturally into early set collections. Its artwork and era make it a dependable vintage choice for Onix specialists.

   Look for minimal back whitening, since Fossil commons often show edge wear.

   Estimated value: $1.94

4. 4

   Dark Onix

   Team Rocket · 2000 · 36/82

   

   Dark Onix gives the character a more aggressive Team Rocket-era identity and is one of the most popular alternate-name Onix cards. It is a strong non-holo rare for collectors who want vintage significance without chasing a holo.

   Team Rocket print quality can vary, so inspect centering and surface gloss closely.

   Estimated value: $1,670.88

5. 5

   Brock's Onix

   Gym Heroes · 2000 · 69/132

   

   This card benefits from its direct Brock connection, giving it extra nostalgia beyond a standard Onix printing. It is a favorite for collectors of anime-era character cards and Gym sets.

   Buyers should watch for edge wear and soft corners, both common on Gym-era cards.

   Estimated value: $1.94

6. 6

   Steelix & Onix-GX

   SM Black Star Promos · 2019 · SM248

   

   This tag team promo is one of the boldest modern cards to feature Onix prominently. It adds contemporary style and display appeal to an otherwise vintage-heavy Onix collection.

   Promo cards can show packaging wear, so inspect corners and the front surface carefully.

   Estimated value: $5.25

7. 7

   Steelix & Onix-GX

   Unified Minds · 2019 · 208/236

   

   The full art version is one of the best modern slab targets for Onix collectors thanks to its premium presentation. It blends character collecting with mainstream ultra rare appeal.

   Modern full arts are highly sensitive to centering, so avoid off-center raw copies if grading.

   Estimated value: $0.71

8. 8

   Steelix & Onix-GX

   Unified Minds · 2019 · 224/236

   

   As the rainbow rare version, this card stands out as one of the most premium modern Onix-related pulls. It is especially appealing to slab collectors who prioritize rarity tiers and modern chase cards.

   Check for print lines and surface flaws, since they can keep a card out of Gem Mint.

   Estimated value: $0.71

9. 9

   Jasmine's Steelix

   Pokémon VS · 2001 · 081/141

   

   This Japanese VS-era card gives Onix collectors an advanced-era option tied to the Steelix evolution line. VS cards have a dedicated following and can add depth to a specialized graded collection.

   Japanese vintage often looks cleaner, but holo scratching and edge wear still matter.

   Estimated value: $174.25

10. 10

    Crystal Onix

    Pokémon Funschool Promos · 2002 · 2

    

    Crystal Onix is a niche promo inspired by one of the franchise's most memorable anime-only concepts. It is a standout specialty item for collectors who want something beyond standard English set appearances.

    Because this is a less familiar promo, verify authenticity and label details before committing to a purchase.

    Estimated value: $4.99

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