What gives Rainbow Moonstone its blue flash?

The blue flash, or adularescence, is caused by light scattering between microscopic, alternating layers of orthoclase and albite feldspar within the stone.

Is your Rainbow Moonstone natural?

Yes, we exclusively cut 100% natural, untreated Rainbow Moonstone. We never sell synthetic opaline glass (often mis-sold as 'opalite moonstone').

How do you grade your Moonstone cabochons?

We grade our Moonstone based on the clarity of the background (the more transparent/white, the better) and the intensity and coverage of the blue/rainbow flash across the dome.

Do you supply calibrated sizes for mass production?

Absolutely. We supply large parcels of strictly calibrated Rainbow Moonstone cabochons (e.g., 10x8mm, 14x10mm) specifically for commercial jewelry manufacturing.

Can Moonstone be used in daily wear rings?

Moonstone has a Mohs hardness of 6-6.5. While suitable for rings, it requires a protective setting (like a full bezel) and a bit of care to prevent scratching during daily wear.