This large chunk of Black Tourmaline in Quartz, 2-3 inches in diameter, is great for any mineral collection.
Tourmaline is one of the most complicated groups of silicate minerals. Whe tourmaline is found within quartz, the quartz is known as ’tourmalinated’. Black Tourmaline is naturally striated and rich black, making it a beautiful stone to set in jewelry. Tourmaline with quartz is considered a prized specimen for collectors.
View the glory of space with this hi-tech telescope set!
This microscope is so versatile you can even take it with you on a job site!
Build your very own smart robot!
This kit focuses on teaching children about electricity and how electronic devices work!
Command robotic creations with this cool construction kit!
The Hoberman Sphere expands and contracts with a magical motion so fluid and simple that kids can't help but play with it for hours.