This is my first attack, so I hope it's understandable! Here goes:
10 4mm Czech Fire polish glass beads for base (oval shaped blue in diagram)
10 4mm bicone Swarovski crystals (dark blue diamond shape in diagram)
10 4mm Swarovski pearls (purple round shape in diagram)
15-20 4mm Czech Fire polish glass beads for band (oval shaped blue in diagram)
Seed beads (I use Miyuki delicas for their consistency; blue round shape in diagram)
Fishing line (I use 6 lb)
Cut a length of fishing line about 2.5 m long.
String 3 fire polish beads on and string the opposite end of the fishing line through the last bead you put on, going in the opposite direction that the other end of fishing line went. This should make a triangle shape, with each bead being one side of the triangle (See figure 1 on diagram). Make sure this triangle is in the middle of the fishing line so the ends are both the same length.
On one end of the fishing line string a pearl and 2 fire polish beads on. Then string the fishing line through the bead marked with *, then through the bead marked with ** (See figures 2 and 3).
Continue doing this until the base looks like figure 4. For the last loop, you will only need to string on 1 fire polish instead of 2, and you will need to string the fishing line through the first fire polish bead as well as the 2 others. Confused yet? At this point the base of the ring is done, and things get a bit more complicated to draw because everything becomes 3D.
So, both ends of fishing line should be coming out of the same fire polish bead at different end and in different directions, as in figure 4. I put an exclamation point on that bead so you could follow it to figure 5. String a bicone on each end of the fishing line, the string both ends, going in the same direction, through a pearl (Figure 5). String a seed bead, a pearl, and a bicone on one of the ends, then string that end through the fire polish beside the one with the exclamation point. Then string on another bicone, and string the fishing line through the pearl we just added. Do this on the other end of fishing line as well. Figure 6 is a side view of this procedure (I tried to skew and shrink the end ones to make it look like they werent in a straight line and were actually rounded, but I dont think it worked too well!).
Do this one more time to each end of fishing line, and each end of fishing line should be coming out of the last 2 pearls (which at this point are not connected with a seed bead between them like the rest). Figure 7 is a top view of how everything should look. The bead marked with the s is the first pearl we strung on.
String a seed bead on one of the fishing line ends then string it through the other pearl, through the bicone, and then through the fire polish bead as shown by the red line in figure 7. Take the other end of the fishing line, string it through the seed bead that was just added, but in the opposite direction as the first time it was strung through, and then string it through the pearl, bicone, and fire polish as indicated by the red line.
Now, take the end coming out of the fire polish marked with the + in the picture, and string it up through the bicone. Then, add some seed beads to it. I usually use 6, but it depends on the size of your seed beads.
Take the end of the fishing line, and string it through the seed bead indicated in figure 8. Just to clarify, this would be the seed bead just to the left of the pearl above the bicone you just exited.
Then, string the fishing line through the next seed bead and then down the pearl and bicone, through the fire polish, then up through the other bicone. String on the same number of seed beads and repeat until the top view of your ring looks like figure 9.
Make it so both ends of your fishing line are coming out of the same fire polish bead at opposite ends, and then string a seed bead, a fire polish, and another seed bead onto each end of fishing line. Then on one end, string another fire polish and use the other end of fishing line to pass through that bead in the opposite direction (See figure 9). Then add 2 seed beads to each end and pass both ends in the same way through a fire polish.
Do this until the band is long enough to fit around your finger, and then add a seed bead, a fire polish, and a seed bead to each end and then string each end through the pearl on the base opposite the fire polish that the band started on. The band will end up being tighter than you think, so adding those few extra beads after you think the band is long enough will ensure that it actually will be loose enough to fit over your finger.
Now, string the fishing line back through the beads in the band in the opposite direction (Please dont skip this part. If you skip it, your ring will look very unprofessional and will probably break fairly easily). This step will strengthen the band and make it stiffer, so that it maintains a round shape. Pass through the band a total of about 3 or 4 times, as many as you can get through (this will depend on the thickness of your fishing line as well as the size of the holes in the beads). After it has gone through as many times as possible, snip the ends of the fishing line as close to the bead as possible. There is no need to tie or glue the end, since they have been passed through the beads so many times. Trust me, they wont come loose.
Go show off your ring and gloat to all your friends
Let me know if there's anything that's unclear, and let me know how you make out if you decide to make one (pictures, if possible