I'm a lucky owner of the heroic version of Thirteen.
Now what augments should I slot? I'd like to focus on offensive augments, because defensive ones should go on other equipment.

So far I have:
red: Globe of Imperial Blood (ML 14)
orange: Ruby of Acid 5d6 (ML 16)
yellow: Topaz of Damage +6 (ML 16)
green: Topaz of Melee Power +4 (ML 16)
blue: Sapphire of Accuracy +12 (ML 16)
purple: Ruby of Shock 5d6 (ML 16)
colorless: Diamond of Strength +8 (ML 16)

Is this ok? Are there better alternatives? (playing a TWF Barbarian, in case it matters)

Would a 2nd Thirteen make sense? What augments to slot in this? I know most of the augments above will not stack.
In red, orange and purple the missing elemental 5d6? And in the remaining some more diamonds of stat +8 (like CON, DEX, CHA)?