Persian Lapis Lazuli Starburst Ring With White Crystal Stones. Ring Size: 9 Estimated more than 50 yrs old. Silver approximately consisting of 90% silver content. Tested Positive: Nitric Acid Chemical Scratch Test, Cloth Rub Test, Smell Test, Magnet Test. Markings: None. The reason silver needs to be combined with other metals is that it is very difficult to make great designs with just pure silver, which is very soft and malleable. A bit of hardness has to be introduced, by adding other metals such as copper. Mexico is the leading producer of silver, followed by the United States, Canada, Australia, Spain, Peru, and Russia. Silver can be found in nature in silver ore, silver ore is a mixture of other metals including silver. Many countries do not require that precious metal items be stamped. Size: See Ruler Photo. (Photos Represent The Condition Of The Lot.)

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