Hi dann1i,
Welcome to
RP!
Martha pointed you in the right direction already but, after trying with the N° 8 I wasn't too satisfied so I tried creating my own ... and found it wasn't difficult at all ... Mind you I'm no expert user of the Pen Tool so it isn't perfect ... but surely a way to do it ...
* First I created a new blank Layer on top of my white Background ...
* Then, I started by creating an elliptical selection ... (
Attachment 1)
* Right clicked in/on the selection and chose 'Make Work Path' ... (
Attachment 2)
* Selected the Pen Tool and, keeping the CTRL key pressed, I clicked on the 'Path' ... several 'drag points' appeared on it and, still keeping the CTRL key pressed, I pulled, dragged etc until I was satisfied with the result ... (
Attachment 3)
* Changed the 'Path' back into a selection stroked it and filled the two halves with different linear gradients ... (
Attachment 4), (
Attachment 5)
Hope this helps.