Sunstone, Faceted, Natural, Drop, One Pendant, 36x20mm

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PENB 438
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Sunstone, Faceted, Natural, Drop, One Pendant with a Metal Alloy Bail, 36x20mm 

Sunstone is a type of feldspar, which when viewed from certain directions exhibits a spangled appearance. It has been found in Southern Norway, Sweden, various United States, including Oregon localities and on some beaches in South Australia. It is usually transparent to translucent. 

The optical effect, schiller, appears to be due to reflections from inclusions of red. These inclusions give the stone an appearance something like that of aventurine, hence sunstone is known also as "aventurine-feldspar".

A theory exists that the sunstone had polarizing attributes and was used as a navigation instrument by seafarers in the Viking Age. A stone found in 2013 in the wreck of a 16th-century warship, may lend evidence of the existence of sunstones as navigational devices. 

Hardness 6-6.5 

This is a natural stone that has had no treatment other than cutting, drilling, and polishing done in China.

Metal Alloy is a metal made by combining two or more metallic elements, base metals, to give greater strength or resistance to corrosion. In mining and economics, base metals refer to industrial non-ferrous metals excluding precious metals, like silver, gold, and platinum. Base Metals include copper, aluminum, nickel, tin, zinc antimony, bismuth, lead and many more. Metal Alloy, also known as Pewter and is usually a tin based alloy 85-95% of the time but could also be zinc based.

In December of 1994, The US Safe Drinking Water Act defined Lead-free as having less than 0.25% lead content. Most newly made solid pewter on the market today is considered lead free by these standards. But it is still recommended to not give children Metal Alloy jewelry if there is any chance, they will put it in their mouths!