For Your Information...
The Troy System
1 gram                 
1 gram                  
1 gram                 
1.55517 grams      
31.1048 grams      
1 kilogram  
1 pennyweight
1 pennyweight   
20 pennyweights
20 pennyweights
14.5833 troy ounces
12 troy ounces


16 avoir. 7000 grains
avoir. weight x .823
1 oz. avoir.
1 pound avoir.
15.4324 grains
.643 pennyweights
.03215 troy ounce
1 pennyweight
1 troy ounce
2.205 lb. Avoir.
24 grains
.05 troy ounce
480 grains
1 troy ounce
1 pound Avoir.
1 troy pound


1 avoir pound
troy weight
.91 oz. troy
14.58 oz. troy
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(5760 grains)

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KARAT                                                   FINENESS

8 K                                                                .33820
9 K                                                                .37440
10 K                                                               .41600
12 K                                                               .50000
14 K                                                               .58240
16 K                                                               .66560
18 K                                                               .74880
20 K                                                               .83200
21 K                                                               .87360
22 K                                                               .91520
24 K                                                               .99999

  Colors of Gold:
Yellow green, red, and white are produced by variations in the alloy. silver and zinc tend to give a green color, copper-red and nickel white.
  Gold Filled is made by joining a layer (or layers) of gold alloy to a base metal alloy and then rolling  or drawing to the thickness required.
  Rolled Gold Plate is the same as gold filled, but of lower quality.
  Gold Electroplate is usually made by electrolytically depositing fine gold on base metal.
  Gold Solders are usually 2 to 4 karats less than the gold on which they are used.
  Sterling Silver is 925/1000 (92 1/2%) fine silver and 75/1000 (7 1/2%) copper.
  Coin Silver is 900/1000 (90%) fine silver and the balance copper. The same alloy is used for U.S, silver coins.
  Commercial Silver is a term applied to silver that is 999  fine or higher
  Foreigbn Sliverware contains varying percentages of silver. In some cases the fineness is as low as 700/1000.
  Silver Plated Ware is made by electroplating fine silver on a base metal alloy - usually nickel or Britannia metal, sometimes brass or copper.


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Southeastern Refining Co, N.A.
"Buying by the Golden Rule"