Adolin's Shardplate

[Quickbronze he/him]

So I've seen some discussion on Adolin's shardplate; apparently it belonged to a Dustbringer who appeared in the Purelake. I'd like to know 

1) what chapter in what book this dustbringer appears in 

2) how we know the knight's armor belongs to Adolin 

[Yata he/him]

2 hours ago, .50 Caliber Gentleman said:

2) how we know the knight's armor belongs to Adolin 

I believe it's from Dalinar that seems to recognize the Plate as the Adolin's one...But he can't be sure of course

[Calderis he/him]

It's the Purelake vision in tWoK. 

Don't know the chapter number 

[Spoolofwhool]

Quote

Not just a Shardbearer. Radiant. A knight in resplendent Shardplate that glowed with a deep red at the joints and in certain markings. Armor did that in the shadowdays. This vision was taking place before the Recreance.

Like all Shardplate, the armor was distinctive. With that skirt of chain links, those smooth joints, the vambraces that extended back just so . . . Storms, that looked like Adolin’s armor, though this armor pulled in more at the waist. Female? Dalinar couldn’t tell for certain, as the faceplate was down.

- Words of Radiance, Chapter 4

Here you go.