The blue beads are placed on the perimeter where there are two parallel bights. The green beads are placed at the center "spine" of the knot where the cord passes laterally though the loops.
The construction is a single pass of the cord making this a rather lightweight design.
black star knot bracelet with red beads which was also published on Pearl's blog back on June 4, 2012
rope bracelet with star knot meridian
(also executed in 2 mm white cord including a reference to the pattern author who designed this knot)
star knot meridian cotton rope bracelet 1739
Size is a "medium" measuring 7 3/4" (195 mm) inside circumference with plenty of flexibility.
design by Norbert Trupiano used with permission, photographs © copyright 2012 WhatKnotShop