Ah, mysterious onyx. This mesmerizing banded variety of the oxide mineral, chalcedony, holds the beauty of the sky in all its phases. Its popular deep black base resembles the stillness...

Fulgurite is exactly the next best thing to holding a lightning bolt in your hand. When cloud-to-cloud lightning discharges into the surface of the earth, it will likely strike at...

Angelite is a trade-name for a semi-transparent, pale glacier-blue or lilac-blue anhydrite variant. Anhydrite crystals are evaporites, occuring in areas where gypsum stones have been in contact with water, which...

Smithsonite is a mineral ore of zinc that occurs in a variety of colors, such as brown, bluish-grey, purple, pink, blue, green, yellow, grey, white, and colorless. What sets it...

Snowflake obsidian is a variety of the obsidian stone which is black and includes numerous white spots resembling snowflakes. What produces the blotchy snowflake pattern is the inclusion of small,...

Updated July 17, 2023 by Alexandre Baillairge Specularite or specular hematite is a beautiful stone with a silvery and shimmering surface and a black undertone that may come across as...

Typically occurring in orange to reddish-brown, spessartine garnet is a rare gem that blends with other species of the garnet stone, such as Malaya and Mandarin garnets. Its colors may...

Rutile might not be a stone one hears about often, but it's a gorgeous, natural stone with many unique physical and metaphysical properties. The Physical Properties of Rutile Rutile is...

Iceland spar is a fascinating stone that you've likely seen on TV if you've watched the first episodes of History's TV show Vikings. In those times, it was called the...

Hiddenite is an interesting stone. It is a green-colored variety of spodumene that took some time for researchers and gemologists to define and catalog. Let's have a closer look at...

Fire agate is a variety of chalcedony which contains inclusions of limonite or goethite, which are responsible for its unique appearance and the fiery iridescent effect that this stone possesses....