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Emerald

Mineral Physical Properties

The optical properties of minerals attract our eyes and can give a specimen a unique character. However, mineral physical properties are also…

What is Crystallography?

Crystallography explores stunning mathematical concepts you can see in nature and art. In this article, we’ll discuss crystallography…

What is Mineral Birefringence?

Minerals that polarize light and split it into two different directions are said to be doubly refractive. Birefringence is a measure of a mineral’s…