Has anyone noticed the 3 tones or crystal hum during crafting? I've noticed this, monitored its changes, and based my crafting attempts on it along with the colors of the crystal with fairly good success. I always go crafting off in a corner so I can pay attention to the tones. I know SE hasn't mentioned anything about the tones in the Q&A. Does that mean that there are no other factors other than just the color? (i.e. am I looking for something that isn't there?)
I haven't written anything down, nor care to..I am just curious if anyone else took the time to noticed these tones.
SE did mentioned the color of the orbs in their most recent FAQ on lodestone.
Solid White = high successful rate
Solid Yellow = fair successful rate
Solid Red = low successful rate
Blinking = random, if you succeeded, you may get some 'extra' from it, which means if you use Bold, you'll get more quality than you succeed in Bold with solid color. However, if you failed, it'll cost you more durability in return, so take your own risk.
As for myself, if I'm crafting something that's 5+ ranks lower than my class rank, I would use bold on white and yellow, standard on red and blinking (sometimes I'll just use wait for red and blinking, depends how much durability I have left). If I'm crafting something that's same level or higher level than my class rank, I'll use standard on white and yellow, wait on red and blinking.
You can tell if you're crafting the right stuff by observing the gain in progress vs the lost in durability in a successful standard synth. If you gained 15% progress or more from a standard synth and lost only 10% durability or less, then that means the item is fairly easy for you, and you can throw in some bold synths there. If you gain only around 10% progress from a standard synth and lost 10% durability or more (or maybe gain 18% in progress but lost 15% durability), that means the item is a little too hard for your rank. So you'd better use standard all the way and you probably won't have a chance to make any HQ item.