How do elemental damage buffs work with non-explicit skill runes?

Question

On my Crusader, i'm wearing some pieces of armor that add elemental bonus damage to certain skills (in this case, 19% holy damage, and 16% lightning damage). I understand that when a skill or skill rune explicitly states "damage turns into holy", like on Sweep Attack's Gathering Sweep rune, that will be affected by a buff to Holy elemental damage.

However, for other skills, there aren't clear indications like this. For example:

These skill runes have what appears to be a "holy" and "lightning" image behind them, similar to the Gathering Sweep rune, but don't explicitly state that their damage turns into holy or lightning.

So, are skill runes that do not explicitly state their elemental damage, but still have an image LIKE an element, affected by elemental bonus damage?

Answer 1

What platform are you playing on? On PC, I see elemental tags explicitly listed for skill runes, like this:

I can tell you from experience that the answer to your question is yes: these runes convert the skill's damage to the listed element and will be affected by +elemental damage.

"Show Advanced Tooltips" under Options -> Gameplay toggles the display of this extra information.

Answer 2

As you noticed, these runes have Holy and Lighting damage type icons and in fact do these types of damage accordingly. So they benefit from % bonus to elemental damage.

You can check wiki for more detailed runes descriptions:

Shattered Shield: increases the blast radius to 12 yards and the cone length to 30 yards, and damage to 740% plus 335% of Block Chance.

One on One: damage type changes to Lightning, and primary target is also stunned for 1.5 seconds, while other affected enemies are knocked back up to 30 yards.