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2. Prong setting - Wikipedia

   en.wikipedia.org/wiki/Prong_setting

   A prong set diamond in a gold ring.. Prong setting or prong mount refers to the use of metal projections or tines, called "prongs", to secure a gemstone to a piece of jewelry.A prong setting is one component of what is known to jewelers as a head, a claw-shaped type of binding (typically three, four, or six individual prongs per head) that is welded or soldered to a jewelry item to mount (or ...

3. Colored gold - Wikipedia

   en.wikipedia.org/wiki/Colored_gold

   Rhodium-plated white gold wedding ring. The word white covers a broad range of colors that borders or overlaps pale yellow, tinted brown, and even very pale rose. White gold is an alloy of gold and at least one white metal (usually nickel, silver, platinum or palladium). [5] Like yellow gold, the purity of white gold is given in karats.

4. Gold-filled jewelry - Wikipedia

   en.wikipedia.org/wiki/Gold-filled_jewelry

   If the gold layer is 12 kt or higher, the minimum layer of karat gold in an item stamped gold-filled marks must equal at least 1 ⁄ 20th the total weight of the item. The most common stamps found on gold-filled jewelry are 1 ⁄ 20th 12kt GF and 1 ⁄ 20th 14kt GF. Also common is 1 ⁄ 10th 10kt. These standards are for modern gold-filled items.

5. Jewels of Diana, Princess of Wales - Wikipedia

   en.wikipedia.org/wiki/Jewels_of_Diana,_Princess...

   Diana possessed an 18-carat yellow gold framed Tank Louis Cartier watch with a black alligator strap which was a gift from her late father, John Spencer, who died in 1992. By 1996 she stopped wearing the engraved Patek Philippe watch which was a gift from her ex-husband and started wearing a yellow gold Cartier Tank Française watch instead.

6. Fineness - Wikipedia

   en.wikipedia.org/wiki/Fineness

   24-carat gold is pure (while 100% purity is very difficult to attain, 24-carat as a designation is permitted in commerce for a minimum of 99.95% purity), 18-carat gold is 18 parts gold, 6 parts another metal (forming an alloy with 75% gold), 12-carat gold is 12 parts gold (12 parts another metal), and so forth.

7. Grill (jewelry) - Wikipedia

   en.wikipedia.org/wiki/Grill_(jewelry)

   Grills are made of several types of metal (often silver, gold or platinum) that are sometimes inlaid with precious stones; they are generally removable, though some may be permanently attached to the teeth. [5] Gold grills can be made from 10-karat, up to 24-karat gold. The gold can be tinted yellow, white and rose color. [6] [dubious – discuss]