For this type of bracelet you have the choice between several assembly techniques. In elastic version and without clasp for easy assembly and comfort to wear. With a magnetic clasp to be able to put it on and take it off easily. Or in macramé sliding knot version and/or more worked with square knots between the beads!

For the elastic version, nothing could be simpler! Thread the beads then make a first simple knot. For the second knot pass twice through the loop before tightening the knot well. You can add a small drop of glue on the knot to strengthen it.

For the magnetic clasp version, here you can use either linhasita thread, or silk or nylon thread. Make a double knot with one end of the thread on the clasp ring. 

Then thread a metal bead then your natural beads.

Thread a metal bead again then make a knot on the other ring of the clasp.

Be careful not to tighten the thread too much, the assembly must remain flexible for comfort.

For the macramé version, choose your thread paying attention to the thickness of the thread compared to the hole of the beads and the desired look.

Make a knot on the thread about 15cm from the end to block the bead threading. 

Thread the beads, here you will put fewer beads than your wrist circumference to leave room for the knot.

At the edge of the bead threading make a knot again to block them. 

Now make a macramé sliding knot. Find the clasp technique here

For the version with knots between the beads, the knots will be the same as above. Thread the beads on the thread as before leaving the beads free on the thread, then with a new thread about 50cm long make 2 square knots above the first bead (these are the same as for the sliding knot above).

Slide the second bead under the knot then bring the threads around the bead to make 2 knots underneath it.

Continue to the end then make a sliding knot to close the bracelet.

And there you go! Beautiful creations ;-)