Yu-Gi-Oh!
Gem-Knight Sardonyx
Hidden Arsenal 7 · 001 · Super Rare
Current UK price · near mint
£0.18▲ 12.5%
As of 2026-05-23 · folio price index · last 7 days
About this card
Gem-Knight Sardonyx is a Super Rare from Hidden Arsenal 7, part of the Yu-Gi-Oh! trading card game. Track its price, watch its history, and manage your full TCG collection — across 13 games and counting — with folio. Built by collectors, for collectors.