This set of 40 Ice Blocks & Giant Stacking Gems is a pleasure to play and build with. The gems come in three different sizes and shapes, as well as three different colors, or jewels: emeralds, rubies, and sapphires. The ice blocks look like chunks of ice with a transparent blue hue. Textured grooves and ridges make it easy and fun to stack and build all sorts of cool imaginative structures. 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.

• WHAT'S INCLUDED: 40 blocks: 20 Giant Stacking Gems, 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". 20 Ice Blocks measuring slightly less than 1-1/4 inches x 2-1/2 inches x 1 inch thick per block.
  
• 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 & ICE: 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. Transparent cool turquoise hue transmits light just like a block of ice; structures seem to glow and shimmer!
  
• 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 soft, durable, washable PETG (Polyethylene terephthalate) plastic with rounded edges and ridges 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+.