Gemstones have fascinated people for thousands of years. in the past only a few stones were classified as gems. Today, the number of gemstones is great and new varieties are being discovered all the time. Usually gemstones need to be specially cut and polished to be made into jewelry. You can learn more fun facts about gemstones by investing in this collection. Sixteen common gemstones are featured on this 4 X 6 card, along with interesting information included on the back of the card.
A cool kit that helps you build your very own robotic arm!
This genuine meteorite is great for the rock collector in your family!
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.
This kit will get your paper plane ready for takeoff!
This kit allows to build up to 3 different robots!
A massive mounted set of 100 rocks and minerals found in the US,