Black Tourmaline vs Obsidian – The Similarities and Differences (With Photos)

A shiny raw obsidian

Obsidian photo provided by Daniel A. Pierce

Black tourmaline and obsidian may seem like simple stones at first glance, but don’t be fooled! They each have their own secret stories, like two different books with dark covers. In this article, we’ll share with you the similarities and differences between black tourmaline and obsidian. We’ll dig into the nitty-gritty of what makes these … Read more

Black Diamond vs Onyx – The Similarities and Differences (With Photos)

The Enigma, the largest faceted diamond in the world, according to the Guinness Book of World Records (2006)

Black diamond "Enigma" photo provided by Rui Galopim de Carvalho FGA

If you’ve ever been intrigued by the elegance and allure of gemstones, then black diamonds and onyx are two captivating gems you won’t want to miss. These gems have adorned jewelry and enchanted minds for centuries. But what exactly are the similarities and differences between black diamond and onyx? That’s what we’re here to explore! … Read more

Black Obsidian vs. Black Tourmaline – The Similarities and Differences (With Photos)

A gorgeous black tourmaline tower

Tourmaline photo provided by EarthsMineralsInc

Even though obsidian and tourmaline are on opposite ends of the geological spectrum, they each have their unique qualities and interesting appeal. These two minerals show how many different things can be found in the Earth’s crust. Obsidian comes from volcanoes. It has a smooth, glass-like look, and its colors are mostly dark and moody. … Read more

16 Dazzling Black Rocks, Minerals, Crystals, And Gems, and Crystals (Plus Pictures)

A cluster of black hematite

Black hematite

Black rocks, minerals, and gems are as fascinating and dazzling as they are mysterious. While they’re often overlooked in favor of more colorful ones, their unique beauty and history draws interest and much admiration among rockhounds. From the beautiful Obsidian and Hematite, which have been used since the ancient times as tools and decorative items, … Read more

The 23 Best Spots For Gem Hunting In Idaho In 2025

pink opal gemstone from Idaho

The nickname “The Gem State” makes more sense once you learn how many places hold gemstones in Idaho, even if the terrain takes some effort to explore. The range of minerals is broad enough that collectors can stay busy across different parts of the state. Idaho’s geology supports everything from common minerals to stones that … Read more

The 10 Great Spots To Find Agates In New York In 2025

agate from New York

The presence of agates in New York brings unexpected color to stretches of gravel, river rock, and glacial debris. Their banded patterns grow from slow layers of mineral-rich fluids settling inside old cavities, creating eye-catching layers. Even the smaller fragments can reveal distinctive banding when the light catches just right. Agates settle into ground shaped … Read more