The Geologist Blog

The phrase "black as jet" refers to its deep, dark, hue and jewelry or other objects fashioned from this stone are both elegant and beautiful.

Rhodonite and Rhodochrosite are two stones that people often ponder. With similar names and colors, is there any connection? Let's explore to learn more.

Due to its rarity and high value, there are many imitations on the market. In this article we discuss how to differentiate between real vs fake malachite.

Selenite, Satin Spar, and Desert Rose are all forms of the evaporite mineral gypsum. In this article we’ll discuss gypsum, formation, and how to spot the the fakes.

Kambaba stone is actually the remains of ancient organisms responsible for the atmosphere as we know it.

Have you ever wondered about the many different varieties of garnet? While garnet is commonly thought of as a deep red stone, it is also found in many different types and colors. In this article, we’ll look at the many garnets used as semi-precious gemstones in handmade jewelry.

Lapis Lazuli is usually found in deep blues flecked with gold, making it a very attractive stone, reminiscent of the night sky. Often referred to simply as Lapis, this stone is widely desired by many.

Amethyst is a mineral that forms inside of trapped gas bubbles of lava and has cultural significance to the greeks and tibetans. Read our monthly mineral overview about Amethyst to learn more.

People often use crystals and gemstones for healing or aesthetic purposes. See our guide to learn  how to tell and understand the difference between crystals and gemstones.