Synonyms for Rarity

Prodigy
amazement anomaly curio curiosity exception	improbability marvel miracle museum piece nonesuch	oddity phenomenon prodigy rarity sight	something else spectacle stunner wonder

Scantiness
austerity dearth exiguity infrequency insufficiency	meanness parsimony paucity poverty rarity	scantiness scarcity slim pickings smallness sparsity	stringency thinness tightness