All of a sudden the diamond in the recipe started working. However, my ruby_sword recipe still doesn't work. ("I never brought it up before because I thought maybe they had the same problem). It uses one strong tool handle and two rubies.
{
"type": "minecraft_crafting_shaped",
"pattern":
[
" r ",
" r ",
" s "
],
"key":
{
"r":
{
"item": "rubies:ruby"
},
"s":
{
"item": "rubies:strong_tool_handle"
}
},
"return":
{
"result": "rubies:ruby_sword",
"count": 1
}
}