In crypto slang, a gem is a small, little-known token that someone believes is undervalued and could multiply in price, often promoted as a "hidden gem" or "low-cap gem". The term usually refers to coins with a small market capitalization that trade on decentralized exchanges or minor platforms, sometimes shortly after launch. Social media channels and influencers regularly announce gems, frequently alongside promises of a moonshot. A few such tokens have risen dramatically, but many fall to almost nothing, and the label is common in paid promotion, shilling and pump-and-dump schemes, where early holders sell to buyers attracted by the hype. Small tokens also tend to have thin liquidity, so prices can swing sharply on modest trades. Also see altcoins.
Last updated 13 Nov 2026