Difference between revisions of "Carat"
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| − | [[File:2006.47-SC176532.jpg|thumb| | + | [[File:SC297850.jpg|thumb|Brooch with over 19 carats of cut diamonds<br>MFA# 2013.1776]] |
| + | [[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 | ||
| − | == | + | ==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 |
[[Category:Materials database]] | [[Category:Materials database]] | ||
Latest revision as of 14:49, 19 May 2022
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