perlite - screened and partially dried perlite pellets and popped perl – Geological Specimen Supply

Perlite is a hydrated form of obsidian. When a mass of obsidian picks up water, it devitrifies and becomes amorphous perlite. The unhydrated core of the obsidian mass may weather out as an obsidian spherule called an Apache Tear. Perlite can also form by the sudden cooling and solidification of rhyolitic volcanic ash

Perlite Soil Amendment Pure Horticultural Grade Soil Additive

The Perlite Store: Horticultural Perlite

What is Perlite Silbrico Corporation

Melatonin Inhibits Cadmium Translocation and Enhances Plant

Popcorn Perlite Anyone? Keller Mechanical & Engineering

Your perlite manufacture conveniently located in the North Midwest

xGarden 8 Quarts Horticultural Grade Premium Perlite

Bulk perlite for professional use – 120 quarts – 4 cubic foot weighing 20 pounds. Horticultural perlite is clean, sterile, pH neutral, Non-Flammable,

PVP Industries PVP105408 120 Quarts – 4 Cubic Foot of Organic Perlite Planting Soil Additive Gi, White

Hess Perlite: About Perlite

Ever notice that most cacti and succulents care advice include well draining soil? These little white pearls resemble styrofoam and are also known as volcanic popcorn. Perlite is a volcanic substrate with a high-water content. When heated to temperatures up to 1700⁰ F (900⁰ C) The water turns to steam and pops the particle like popcorn, resulting in a lightweight and sterile mineral.