Amazonite is a striking green to blue-green variety of microcline feldspar, known for its vibrant color and smooth, polished appearance. It's a popular gemstone for collectors and jewelry makers due to its unique hue and aesthetic appeal.

Amazonite forms in granitic pegmatites, where slow cooling allows large crystals to develop. It typically appears alongside quartz, albite, and smoky quartz.

The vibrant green to blue-green color of amazonite was once thought to be due to copper, but it's now known to result from trace amounts of lead and water in the crystal structure. The color can vary from pale green to deep turquoise, often with a slightly mottled or striped appearance.