Related Clues:
- Fifths of a gram
- Jewelers' purity units
- They're used to measure gems and the purity of gold
- Units of purity
- Gemology units
- The Hope Diamond's 45+
- Gemstone weights
- Diamonds are weighed in them
- Gold measurement units
- Purity measures
- Chain units, maybe
- Gold fineness units
- They're used to measure gems and gold
- Certain ingot measures
- Measures of gem weight