Related Clues:

• Metric prefix
• Metric measure
• Amount in a drug shipment
• Medicinal weight
• Decent-sized diamond
• Gold measure
• Rock unit
• Stone size
• .035 ounce
• Jeweler's unit
• Metric weight
• The 'G' in EKG
• About three grains
• See 67-Across
• Tiny particle: Abbr.