How to draw a ring that you remember seeing somewhere?

[DayOk2]

I remember seeing a ring with rounded corners and the colors pale copper and gray combinations in stripes. It had two pale copper and one gray stripes, with the gray stripe between the two pale copper stripes. The outside of the ring had half cylinders with these stripes. The inside was flat and the corners of the ring were round. It was also a wide ring. I do not know if that was the exact design though, so I want to try to draw that ring. However, I am bad at drawing, so do you know how I can draw it with an online tool?