Black and Dark Crystals for Maker

What do they do, exactly? I've heard the black crystal only stimulates gems and the dark crystal stimulates the dex/power/wisdom/etc crystals. If so, does the black crystal affect the diamond?

It affects the stats associated with them. So if you only used a Dark Crystal while making an overall, it could make the STR/DEX/INT/LUK better or worse, and Black Crystals would have the same effect on attack and others that have a variational added like it, 1/2/3.

Hello Brandon, long time no talk, lols.

Anyways, I asked a similar question here and based on the answers I got, Black Crystals add to everything other than Str/Dex/Int/Luk while Dark Crystals add to those 4 and both of them work like chaos scrolls, meaning you have a chance to gain, but also lose stats.

I've been wondering.
What if the item doesn't come with any of a certain stat?
For example: You make a glove that has 3 str and no dex but you add an advanced LUK crystal to add +5 LUK. You want to affect the stats with an advanced dark crystal. In what way will the dark crystal affect the LUK of the glove? Will it not affect it because the glove itself has none? or will it affect it because the luk crystal adds it? If it does affect it, in what way? Does it affect the LUK crystal or the LUK on the glove AFTER the LUK crystal?