Image © The Pokémon Company, shown for identification.
Onix
FireRed & LeafGreen · #42/112
Onix (42/112), the Uncommon from FireRed & LeafGreen, has an estimated ungraded market price of about $2.75, typically in the $2–$4 range.
As of September 14, 2026 · tracked daily by Riffle · estimates, not financial advice · how these numbers work
The modeled fair value of this card, with a confidence grade: what it should trade at, not just what it lists at. Part of Riffle premium, alongside price history and the full graded ladder.
About Onix
Onix is a Uncommon (42/112) from the Pokémon FireRed & LeafGreen set, released September 1, 2004. Ungraded copies currently trade at an estimated market price of $2–$4. The artwork is by Kouki Saitou. Riffle tracks its market price daily; graded (PSA) comps and full price history are available with Riffle.
Other versions of Onix
Onix appears on 26 different cards across the sets Riffle tracks, at very different values. This page covers #42/112 from FireRed & LeafGreen; the collector number printed at the bottom of the card tells them apart.
Southern Islands · #3/18$48–$65Common
Aquapolis · #98/147$7–$9Common
Neo Genesis · #69/111about $1Common
Base Set 2 · #84/130$0.90–$1Common
Team Rocket Returns · #69/109$0.80–$1Common
Base Set · #56/102$0.80–$1Common
Sandstorm · #71/100$0.80–$1Common
Unseen Forces · #65/115$0.70–$1Common
Plasma Freeze · #61/116under $1Uncommon
Legendary Collection · #84/110under $1CommonFAQ
How much is Onix (42/112) worth?
Onix (42/112), the Uncommon from FireRed & LeafGreen, has an estimated ungraded market price of about $2.75, typically in the $2–$4 range. Note: 25 other cards named Onix exist across the sets Riffle tracks, at very different values; check the collector number.
Which Onix card is this, and how do I tell the versions apart?
This page covers Onix (42/112), the Uncommon (about $2–$4) from FireRed & LeafGreen.
The other versions: #3/18 from Southern Islands (Common, about $48–$65); #98/147 from Aquapolis (Common, about $7–$9); #69/111 from Neo Genesis (Common, about about $1); #84/130 from Base Set 2 (Common, about $0.90–$1); #69/109 from Team Rocket Returns (Common, about $0.80–$1); #56/102 from Base Set (Common, about $0.80–$1); #71/100 from Sandstorm (Common, about $0.80–$1); #65/115 from Unseen Forces (Common, about $0.70–$1); #61/116 from Plasma Freeze (Uncommon, about under $1); #84/110 from Legendary Collection (Common, about under $1); #56/95 from Unleashed (Common, about under $1); #69/100 from Stormfront (Common, about under $1); #109/214 from Lost Thunder (Common, about under $1); #92/130 from Diamond & Pearl (Common, about under $1); #57/95 from Unleashed (Common, about under $1); #71/168 from Celestial Storm (Common, about under $1); #103/236 from Unified Minds (Common, about under $1); #105/236 from Cosmic Eclipse (Common, about under $1); #095/165 from 151 (Uncommon, about under $1); #61/108 from Evolutions (Common, about under $1); #138/264 from Fusion Strike (Common, about under $1); #68/163 from Battle Styles (Common, about under $1); #036/78 from Pokémon GO (Common, about under $1); #070/132 from Mega Evolution (Common, about under $1); #090/182 from Paradox Rift (Common, about under $1).
The collector number printed at the bottom of the card is the reliable way to tell them apart.
More from FireRed & LeafGreen
Grading
A grading read appears once Onix has a PSA population census. Riffle captures the census monthly; this card doesn’t have enough graded copies on record yet.
- $2–$4 is the middle 80% of clean market activity, not the cheapest listing and not the most hopeful one.
- The band spans about ±27% around its midpoint: a wide spread, so read it as a range, not a point.
- Sampled daily since July 28, 2026, current as of September 14, 2026.
When the data thins, the band widens and says so, it never fakes precision. Exact source prices are part of Riffle premium; the band is Riffle’s own figure to publish. How these numbers work →