This set of Giant Stacking Gems is a pleasure to play and build with. They come in three different sizes and shapes, as well as three different colors, or gems: emeralds, rubies, and sapphires. They are made of durable plastic that is light-weight and easy to clean. Plus, they are safe for children to build and play with as they are not heavy like wooden building materials. They are great for free-play, STEM challenges, or even a game of Hide the Gem. Hours of play are in store when you bring these into your school or home.

• BUILDING FUN: The unique shapes of these gems make them a fun challenge. There are lots of angles that the gems can rest on. Practice balance and stacking with these beautiful gems.
  
• GEMS: The beautiful, shiny, and translucent nature of these gems makes them a pleasure to play and build with. The green gems represent emeralds, the red gems represent rubies, and the blue gems represent sapphires.
  
• WHAT YOU GET: This set of Giant Stacking Gems comes with 20 different pieces. You get 6 green gems that measure 4" x 4" x 8", 7 red gems that measure 4" x 4-1/10" x 5-4/5", and 7 blue gems that measure 4”"x 4" x 5-6/10".
  
• PERFECT FOR A STEM CHALLENGE: You can create a STEM challenge using engineering. One at a time, build the tallest structure possible, or maybe even the largest structure possible. Next, try it again using what you learned the first time.
  
• LIGHT WEIGHT: This product is made of light-weight plastic, so even if the fall, they will not smash toes or cause major injuries. You can also clean them with a damp cloth. They are safety tested for children 3+.