From this page you can find all awesome stuff that you can create with RED GLASS BLOCK. You can find this item in signs category. Plant and harvest in one session. RED GLASS BLOCK gives experience points when broken. How many times you need to hit it? Head to the wiki for more info: <a href="https://growtopia.fandom.com/wiki/Red_Glass_Block">red glass block</a> You get at least 1 seed back (maybe more!) from splicing RED GLASS BLOCK. Gemratio of RED GLASS BLOCK is a mystery. Maybe you can check the wiki for <a href="https://growtopia.fandom.com/wiki/Red_Glass_Block">red glass block</a> Will you get enough blocks to build something? You just have to find out yourself.