Signet Ring in Salome-Platform (Version 2)

 Here is a second model of a signet ring.

1. Create sphere.
2. Partition sphere to get two solids.
3. Scale one solid along the X axis. (The object will look like an egg.)
4. Fuse the two solids and then use operation partition to create a place for the seal.
5. Cut hole in the object using cylinder.
6. Create smooth curve by cutting the ring with two large cylinders.
7. Fillet the edges.
8. Design seal in DraftSight.
9. Import seal design and extrude it to create a solid.
10. Create a box and cut the design into the box using operation cut.
11. Partition the box so that only the seal will remain.
12. Use operation translate to fit the seal on the ring.
13. Use operation scale to give the ring appropriate size.