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They look like cyan (light-blue) crystals of some sort.
everything
You can't get a curved shape on minecraft. Everything is squared.
There are a few. There's blue stained glass, Lapis, Blue Wool, Cyan Wool, blue hardened clay, and diamond.
You will have to rebuild them.
Try these: #E0FFFF - LIGHT CYAN #00FFFF - TRUE CYAN #57FEFF - CYAN 1 #50EBEC - CYAN 2
You can craft things with Lapis like: A Lapis Lazuli block, light blue dye, cyan dye, purple dye, magenta dye and blue wool. You can check out Minecraft Wiki for some help and tips.
Download it off the minecraft forums. Then drag everything in the file into the minecraft jar on winrar, or 7zip.
Re instull Minecraft
Infinite, as everything in minecraft. However, they are quite rare, and it is easier just to trade for them.
You are not able to craft a blue flower in minecraft for the pc/xbox without the use of a mod that has a blue flower in it. There is only a red flower (Rose) and a yellow flower (Dandelion). Blue flowers (Cyan) are not planned to be put in pc/xbox game (jebtweet:78539168938078208) On minecraft pocket edition (pe for short) there is a replacement for Roses called Cyan (the blue flower you are talking about). They replaced the rose because of hardware problems (jebtweet:78539168938078208) Although the rose has been replaced there is still a dandelion in the pocket edition.
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