Depending on what skill is meta, if you’re purely doing it for profit, consider just taking the one that can net you more returns.
2. Harvest Chaos (Critical) Spam the Jewel
Search for Harvest crafts and look for “Critical” modifier options, you’ll want to spam “Reforge a rare item with new random modifiers, including a Critical modifier”, do this until you hit two critical multiplier modifiers, it’s actually incredibly common if you get the “critical modifiers are more common” chaos variant.
As you can see from the above image, we have two multipliers and 2 non-crit modifiers.
3. Harvest Augment crit/remove non-crit add crit the Jewel
Once you have a jewel with 2 multipliers, if you have an open prefix or suffix apply an “Augment Crit” craft, you may hit critical strike chance, or you may hit the third multiplier.
You can also use the “Remove-Non/Add” critical modifier option from Harvest to remove any irrelevant modifiers for another shot at that 3rd multiplier, like the one above.
As you can see both of our attempts to remove-non crit add crit hit chance, unfortunately, that means we’d have to start over.
4. Rinse and repeat until you get the desired result
Of course, it may take a while to make one, but with this method, it is eventually guaranteed as long as you keep at it, it’s one of the best uses I personally found for these crafts, the jewels typically cost around 4ex but can go for much more depending on what you roll.