boolean isPresent = false;

        for(int i = 0; i < list.tagCount(); i++){
            ImbumentEnum iEnum = ImbumentEnum.valueOf(((NBTTagCompound) list.getCompoundTagAt(i)).getString("CrystalAlchemyImbumentID"));
            if(iEnum == imbument.getType()){
                isPresent = true;
            }
        }

        if(isPresent){
            NBTTagCompound compound = new NBTTagCompound();
            compound.setString("CrystalAlchemyImbumentID", imbument.getType().name());
            list.appendTag(compound);
        }