"Activités de comprehensive"
Applied Filters
Lepidolite
Beautiful, violet-pink cleavage books of this uncommon lithium mica.
Expand 1 item
Corundum (Sapphire)
Beautiful, blue, hexagonal, sapphire crystals. Average size: 3/8". Madagascar.
Expand 1 item
Celestite
Sparkling pale blue transparent crystals in vug-like matrix. Average size: 2" x 2". Madagascar.
Expand 1 item
Chalcanthite
Brilliant blue lab-grown copper sulfate crystal group. Average size: 2" x 2". Poland.
Expand 1 item
Pyrite Crystal Group
Choice intergrown crystal groups, many with striated pyritohedral crystal faces. Perfect for classroom study. Average size: 1" x 1". Peru.
Expand 1 item
Conifer Cones
Conifers come in all shapes and sizes — and so do their cones.
Includes: 6 pine cones, 6 spruce cones and 6 cedar cones.
*Pine cone factoid: Pine cones can forecast the weather! In dry weather, the scales dry up and open out. If they start to close up, wet weather is coming!
Expand 1 item
Ward's® Coals, Set Of 4
A classroom set that covers the major types of coal.