Sapphire Medallion #349 from Modern Horizons 3 is a full art foil / borderless rare card that currently sells for about $13.35 ungraded, with graded copies ranging from $25.25 at grade 9 to $50.01 at grade 10. A grade 10 copy sells for around $50.01, about 3.7× the $13.35 raw price, so high-grade copies are worth grading.