Crossword puzzle clue "units of purity"

Here are the possible solutions for units of purity clue

Answer
Clue
Relevancy
carats
Clue
Gold purity units
Definition
CARAT, a unit of weight used for gems, also CARRAT, KARAT
karats
Clue
Units of purity
Jewelers' purity units
Purity units
Definition
KARAT, (US) a unit of quality for gold, also CARAT, CARRAT
adulterant
Clue
Substance that decreases purity
Any substance that lessens purity
Definition
that which is used to adulterate anything
angel
Clue
Person of beauty, purity or kindness?
Definition
to support financially
assay
Clue
Test for purity
Definition
to put to the proof, to make trial of

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