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Natural Moonstone

Moonstone is the most well known variety of orthoclase feldspar. It characteristically exhibits a milky floating blue light known as adularescence or the schiller effect. This lovely sheen is due to a combination of orthoclase and albite arranged in layers. Light reflected from the layers if they are not too thick is responsible for the unusual optical properties.

  • There are 42 Moonstone gemstones available at
  • Moonstone(s) are organized in the following categories: CalibratedSingle,  gemstones.
  • Our most expensive Moonstone is USD 317.09 and largest Moonstone weight is CTS 22.02.
  • Our cheapest Moonstone is USD 2.93 and smallest Moonstone weight is CTS 0.22.

Find your Moonstone

Our Moonstone(s) are available in various shapes, sizes and colors. 42 Moonstone(s), too many to look through? You may select any combination of search options. Colors grade into each other and you can search for more than one color at once. For a better selection, try selecting two or three colors, -- your first choice plus the two closest colors.

Shape Length (mm) Width (mm)
Category Weight (cts) Price (USD)
Color range
orangy yellow
yellowish orange

Moonstone Profile

Color information: white, blueish white.
Refractive Index: 1.518 1.526
Chemical Composition: KalSI3O8
Hardness: 6 6.50
Density: 2.55 2.57
Crystal Group: Monoclinic
Ocurrence: Sri Lanka, India, Madagascar, Burma, Tanzania, U.S.A.
Sign of the Zodiac: N/A
Month of the year: N/A
Moonstone Moonstone Moonstone Moonstone
Moonstone is usually fashioned en cabochon with the blue colors commanding higher prices.

A new kind of moonstone has also been recently discovered in Tanzania. Potassium-feldspar (K-feldspar) alcali feldspar, or moonstone with weak asterism, the stones exhibit cat's eyes with a weaker ray perpendicular to the eye producing a four ray star in some specimens. We call it "sunstar".

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Finest gems/
Chrome Tourmaline Single
From our finest gemstones collection
Chrome Tourmaline Single Cushion Eye clean
Size: 12.30 X 9.90 MM
Weight: 6.790 CTS
Shape: Cushion
Clarity: Eye clean
Usually ships within 24 hours
USD 3666.60

Deal of the Day/
Beryl Single
limited time offer, ref# YBE021ac
Beryl Single Pear Slightly included
Size: 9.00 X 9.20 MM
Weight: 2.010 CTS
Shape: Pear
Clarity: Slightly included
Usually ships within 24 hours
10 % OFF, YOU SAVE 6.53 USD
USD 58.80

Today’s Trade/
Best Selling Gems:
Sapphire Sapphire
1619 Sapphire ’s available
Browse gems | Learn More
Spinel Spinel
393 Spinel ’s available
Browse gems | Learn More
Alexandrite Alexandrite
289 Alexandrite ’s available
Browse gems | Learn More
Tanzanite Tanzanite
473 Tanzanite ’s available
Browse gems | Learn More
Zircon Zircon
231 Zircon ’s available
Browse gems | Learn More
Gemstone Variety: Hits Index
Going Down Amber -11119 -0.3%
average price USD 174.38 per item
Going Down Sapphire -2898 -0.1%
average price USD 383.73 per item
Going Up Alexandrite +573 +0.1%
average price USD 1814.31 per item
Going Down Anatase -1238 -0.4%
average price USD 185.71 per item
Going Up Turquoise +5563 +1.8%
average price USD 55.07 per item
See more real time gem reports.
Exchange rates to USD
Canada Dollars 1.360
Euro 0.924
United Kingdom Pounds 0.791
Japan Yen 150.129
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Gem Library /
Gems Legend and  Lore This month birthstone: Aquamarine
More from the Gem Library about Birthstones.
Pisces Pisces
February 19 – March 20
Mutable Sign. Very sensitive. Your zodiac stone...more

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