Amethyst Cleaning and Care Guide

Hardness and durability

The hardness of minerals and gems  is measured on the Mohs scale. The numbers on this scale  are based on the relative ease or difficulty with which one particular mineral can be scratched by another. But the Mohs scale can be deceptive. The steps between each mineral are not evenly spaced. For example, diamond is only one number away from corundum, however, it is generally much harder than gems in the corundum family.


Below : Amethyst jewelley including amethyst necklaces, amethyst earrings and amethyst bracelets 
from Modern Vintage Style Gemstone Jewellery Collections

         http://www.modernvintagestyle.co.uk/amethyst-quartz-gemstone-earrings

Commonly found substances like dust and sand are composed mostly of quartz, the species of mineral that includes the purple variety amethyst. So, although amethyst is a lovely gemstone for use in jewellery such as gemstone earrings  and necklaces, it should always be treated with proper care in order to prevent scratching or any other damage.
Amethyst measures a 7 on the Mohs scale which means it has good toughness, therefore it is suitable for all types of jewellery. This includes rings as long as the ring wearer understands the limits of its toughness.
A measurement of 7 on the Mohs scale means that amethyst is a durable jewelllery gemstone as long as proper precautions are followed in order to prevent scratching.

 

Stability

Abrupt changes in temperature can cause fractures in amethyst, and some of the amethyst colour can fade with prolonged exposure to very strong light. Amethyst can also be damaged by ammonium fluoride, hydrofluric acid, and alkaline solutions.

Cleaning

Amethyst can be  cleaned safely with warm soapy water. Ultrasonic cleaners are generally safe except in the particularly rare situations where a stone is dyed or treated .. Steam cleaning is not recommended for amethyst, and it should not be subjected to strong heat.

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