This skript doesn't seem to work. I use skquery and skrayfall. skript lateston inventory click:
if clicked slot is 29:
if player's cursor is brick named "&c&lCetalyne Marble" or kelp named "&a&lQreciue Marble" or iron ingot named "&7&lKromer Marble" or ghast tear named "&f&lArchival Marble" or popped chorus fruit named "&d&lPonter Marble":
send "&eCongrats!"