Difference between revisions of "Carat"

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[[File:2006.47-SC176532.jpg|thumb|'''MFA Acc. #:''' 2006.47]]
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[[File:SC297850.jpg|thumb|Brooch with over 19 carats of cut diamonds<br>MFA# 2013.1776]]
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[[File:2006.47-SC176532.jpg|thumb|Amethyst ring with 18kt gold<br>MFA# 2006.47]]
 
== Description ==
 
== Description ==
  
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karat; Karat (Deut.); carat (Fr.); fine
 
karat; Karat (Deut.); carat (Fr.); fine
  
== Authority ==
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==Resources and Citations==
  
 
* David C. Scott, ''Metallography and Microstructure of Ancient and Historic Metals'', The Getty Conservation Institute, Los Angeles, 1991
 
* David C. Scott, ''Metallography and Microstructure of Ancient and Historic Metals'', The Getty Conservation Institute, Los Angeles, 1991

Latest revision as of 13:49, 19 May 2022

Brooch with over 19 carats of cut diamonds
MFA# 2013.1776
Amethyst ring with 18kt gold
MFA# 2006.47

Description

1) A unit of weight for gemstones. One carat is 200 milligrams. Carat was used in the middle ages by alchemists.

2) (usually spelled karat) A unit of measure for the purity of gold. Pure gold is 24 karat or 1000 fine. A gold alloy that contains 75% gold is 18 karat or 750 fine.

Synonyms and Related Terms

karat; Karat (Deut.); carat (Fr.); fine

Resources and Citations

  • David C. Scott, Metallography and Microstructure of Ancient and Historic Metals, The Getty Conservation Institute, Los Angeles, 1991
  • The American Heritage Dictionary or Encarta, via Microsoft Bookshelf 98, Microsoft Corp., 1998
  • Random House, Webster's Encyclopedic Unabridged Dictionary of the English Language, Grammercy Book, New York, 1997

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