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2. Crown gold - Wikipedia

   en.wikipedia.org/wiki/Crown_gold

   Crown gold is a 22 karat (kt) gold alloy used in the crown coin introduced in England in 1526 (by Henry VIII). [1] In this alloy, the proportion of gold is 22 parts out of 24 (91.667% gold). Crown gold is appreciably less prone to wear than the softer 23 kt gold of earlier gold sovereigns — an important point for coins intended for everyday ...

3. Fineness - Wikipedia

   en.wikipedia.org/wiki/Fineness

   Fineness. The fineness of a precious metal object (coin, bar, jewelry, etc.) represents the weight of fine metal therein, in proportion to the total weight which includes alloying base metals and any impurities. Alloy metals are added to increase hardness and durability of coins and jewelry, alter colors, decrease the cost per weight, or avoid ...

4. Colored gold - Wikipedia

   en.wikipedia.org/wiki/Colored_gold

   Colored gold is the name given to any gold that has been treated using techniques to change its natural color. Pure gold is slightly reddish yellow in color, [1] but colored gold can come in a variety of different colors by alloying it with different elements. Colored golds can be classified in three groups: [2] Alloys with silver and copper in ...

5. Should gold investors add more to their portfolio as the ...

   www.aol.com/gold-investors-add-more-portfolio...

   This has been gold's year. The precious metal has been on a tear in recent months, outperforming many other asset classes by a landslide. Case in point: Forecasts project stock market gains of ...

6. Granulation (jewellery) - Wikipedia

   en.wikipedia.org/wiki/Granulation_(jewellery)

   Granulation is a jewellery manufacturing technique whereby a surface is covered in spherules or granules of precious metal. The technique is thought to have its origins in Sumer about 5,000 years ago. This technique then spread to southern Europe during the orientalizing period, also through the role of Phoenicians, who had founded colonies in ...

7. List of gold nuggets by size - Wikipedia

   en.wikipedia.org/wiki/List_of_gold_nuggets_by_size

   The Welcome Stranger is the largest alluvial gold nugget ever found, which had a calculated refined weight of 97.14 kilograms (3,123 ozt). Three of the biggest nuggets come from the Brazilian Serra Pelada mine. Most of the largest nuggets were melted down into ingots and so only have historical records of their size and mass.