"Avantor"

The most popular Geoblox models, now in a discounted bundle.

Iron oxide-hydroxide mineral; reddish brown to black color; crystal habit ranges from massive to acicular.

An economical set of durable sieve that will hold up to tough use.

Bundle and save with these 10 'must-have' Geology models.

Brazil.

Clear to yellow translucent.

Brownish gray, translucent.

Yellow to orange crystal with a glassy luster and smooth, often transparent appearance.

Prepare for upcoming competitions with this practice kit, the only kits officially licensed and approved by Science Olympiad!

Prepare for upcoming competitions with this practice kit, the only kits officially licensed and approved by Science Olympiad!

Prepare for upcoming competitions with this practice kit, the only kits officially licensed and approved by Science Olympiad!

Prepare for upcoming competitions with this practice kit, the only kits officially licensed and approved by Science Olympiad!

Prepare for upcoming competitions with this practice kit, the only kits officially licensed and approved by Science Olympiad!

Prepare for upcoming competitions with this practice kit, the only kits officially licensed and approved by Science Olympiad!

Prepare for upcoming competitions with this practice kit, the only kits officially licensed and approved by Science Olympiad!

Prepare for upcoming competitions with this practice kit, the only kits officially licensed and approved by Science Olympiad!