A Sparkle from a Moonstone

Sheer blue moonstone.

I love so many different types of stones that choosing a single favorite would be like choosing a favorite dessert-totally impossible. Sometimes you want chocolate, others ice cream, or perhaps it’s fresh fruit you’re craving…

Moonstone is one of my favorites.

It’s a type of feldspar, like labradorite (another favorite of mine). Feldspars are a family of silicates that make up about 60% of the earth’s crust. Large parts of the moon’s crust are composed of feldspars too.

Moonstone is one of the traditional birthstones for June, along with alexandrite and pearl.

Moonstone has a beautiful shimmer-called adularia-the traditional color is blue, and the nearly clear moonstone with that ghostly rich blue is especially highly valued. There is also grey moonstone and peach-both have a soft white shimmer, and rainbow, which normally is a white or white/clear base with many different colors. The colors come about because the stone’s structure is layered, and those layers refract light at different angles. (Like a built-in faceting system!)

A rainbow moonstone piece with peridot.

Moonstone sterling and gold fill pendant

A newer moonstone pendant. They’re tough gems to photograph. The shimmer of this is more on the purple side of blue in most lights. You can also see the spiral from the back through the translucence of the stone.

I like working with rainbow moonstone because of the gorgeous range of colors. The whole rainbow really will appear in some pieces. I also like the fact that each stone will have its own unique pattern of shimmer and color play.

It is a comparatively soft stone. It has a Mohs hardness of 6, which makes it softer than quartz or garnet (though harder than opal) and more easily scratched. I try to avoid the temptation of moonstone rings, since those take the most knocks.

(Title from Cat Steven’s Moonstone.)

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