Firstly an intricate example from nature, the centre of a Cosmos flower.
Now a manufactured example, a Caithness Glass cufflink.
It’s been annoying me that the cufflink looks so flat. The photo really doesn’t do it justice so I’m adding a photo of a Caithness Glass ring, it was bought in about 1971 and they don’t seem to make them anymore. If you click on the link it’ll take you to a video of a paperweight being made. The ring is made by “lampwork” I think. So here’s the photo of the ring, still not showing the true beauty but better than the cufflink, I hope.