
1) Certain ingot measures 2) Chain units 3) Fineness measures 4) Food for rich rabbits 5) Gold count 6) Gold fineness units 7) Gold measures 8) Gold purity measures 9) Gold standards 10) Gold weight 11) Ingot units 12) Purity measures 13) Purity units 14) Purity units, to goldsmiths 15) Units of fineness 
Found on 
https://www.crosswordclues.com/clue/karats

 Karats (Gárásj) is a 60 km² mountain lake in Norrbotten County, Lappland west of Jokkmokk that drains into Small Lule River by way of Pärl River. ...
Found on 
http://en.wikipedia.org/wiki/Karats
  No exact match found.