The term “drusy” comes from the word “druse”, which refers to a rock surface (usually a cavity) covered with tiny individual crystals, such as are found inside geodes or in larger pockets of mineral deposits.
Drusy crystals take hundreds or even thousands of years to form. They form as molten rock begins to cool with trapped gases inside. The gases cause gaps in the rock. As ground water carrying dissolved silica is forced into a porous area of the rock for century after century, tiny crystals form on the surfaces or in cavities of the rock, forming a blanket of crystals.
These rocks are split open to reveal the crystals within. Cabochons are then cut from the surface of the rock capturing the drusy elements.
The most commonly found drusy is quartz (agate or chalcedony), but many other species can exist in this form.
Naturally colored quartz drusy is found almost exclusively in muted colors such as white, grey, tan and cream. Many quartz pieces, though, are dyed black or other vivid colors such as purple, red, green and blue, and some are coated with titanium or other metallic vapor which creates various iridescent finishes. You can read more about gemstone treatments here.
I love working with drusy, because as well as being incredibly beautiful, no piece is ever the same!
Some of the pieces shown here are available for sale in my online shop. I also have a collection of drusy cabochons, sourced from Indonesia, which I am happy to custom-make into rings or pendants similar to the ones shown here if you would like one. Do contact me for a quote, won’t you!!