Thanks Sue, I actually stumbled across this piece a few years back, so really pleased to some degree it ties in with the earlier RCA pieces I have. The yellow shard, actually, stands proud by only around 1mm, you can just feel it raised slightly when running your hand over it, I think the ovoid shape creates a little bit of an illusion so it appears to stand out further than it actually does. Another factor, looking at it close up is that, the yellow shard sits on top of a clear glass casing and when the light penetrates the yellow shard it sometimes creates a little bit of a shadow around the edges of the shard, giving the shard more of a three dimensional appearance.