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2. Colored gold - Wikipedia

   en.wikipedia.org/wiki/Colored_gold

   18K pink gold: 75% gold, 20% copper, 5% silver; 12K red gold: 50% gold and 50% copper; Up to 15% zinc can be added to copper-rich alloys to change their color to reddish yellow or dark yellow. [2] 14K red gold, often found in the Middle East, contains 41.67% copper. The highest karat version of rose gold, also known as crown gold, is 22 karat ...

3. Fineness - Wikipedia

   en.wikipedia.org/wiki/Fineness

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

4. Discounts and allowances - Wikipedia

   en.wikipedia.org/wiki/Discounts_and_allowances

   Trade discounts are given to try to increase the volume of sales being made by the supplier. The discount described as trade rate discount is sometimes called "trade discount". Trade discount is the discount allowed on retail price of a product or something. for e.g. Retail price of a cream is 25 and trade discount is 2% on 25.

5. Service Merchandise - Wikipedia

   en.wikipedia.org/wiki/Service_Merchandise

   Raymond Zimmerman. Products. Jewelry, gifts, home decor products, sporting goods, electronics, toys. Service Merchandise was a retail chain of catalog showrooms carrying jewelry, toys, sporting goods and electronics. The company, which first began in 1934 as a five-and-dime store, was in existence for 68 years before ceasing operations in 2002.

6. Gold - Wikipedia

   en.wikipedia.org/wiki/Gold

   By 2014, the gold jewelry industry was escalating despite a dip in gold prices. Demand in the first quarter of 2014 pushed turnover to $23.7 billion according to a World Gold Council report. Gold solder is used for joining the components of gold jewelry by high-temperature hard soldering or brazing.

7. BIS hallmark - Wikipedia

   en.wikipedia.org/wiki/BIS_hallmark

   The BIS system of hallmarking of gold jewellery began in April 2000. The standard specifications governing this system are IS 1417 (grades of gold and gold alloys, jewellery/artefacts), IS 1418 (assaying of gold in gold bullion, gold alloys and gold jewellery/artefacts), IS 2790 (guidelines for manufacture of 14, 18 and 22 carat gold alloys only ), IS 3095 (gold solders for use in manufacture ...