Quartz Crystal Habits Explained: Prismatic, Druzy, Sceptre and Cactus

A visual guide to quartz habits — prismatic, druzy, sceptre and cactus — and what each shape reveals about the space, speed and...

What Gives Amethyst, Citrine and Smoky Quartz Their Colour?

Trace elements such as iron and aluminium, energised by natural radiation, create the colour centres behind amethyst, citrine and smoky...