(Oh dear Lord, my nails. I am out of nail varnish remover.)
It really is a very subtle highlight. The following photo shows a very heavy swatch, I didn't put nearly that much on my face. I used my fingers to apply and, since my fingers warmed it up a little, it was very easy to blend.
Honestly there wasn't much point in uploading a face shot as it was so subtle. It's like "my lips but better" only "my cheekbones but better". It's pretty nice, and I love spending $$ on cosmetics, but unless the natural ingredients aspect of the product is a real selling point for you, I'd hold out for either something cheaper or something better. I'll be interested to see whether I prefer RMS Living Luminizer.
ILIA Beauty is an American brand but is stocked at the Conran Shop, beingcontent.com and Net-A-Porter. The highlighter is currently in stock in all of those places at £30, but you can get free delivery at beingcontent, whereas the Conran Shop's cheapest delivery charge is £5.95 and Net-A-Porter's is £10. I was surprised to see that it isn't stocked in Selfridges Beauty Rooms, which stock an amazing range of American and Japanese products.