This is the most beautiful strand of faceted Ethiopian opal beads I have seen and it is complemented with solid 18k beads and clasp. The opal displays many colors including dark blues, purples, violets, greens and even some red. None of these photos truly captures all of the color and brilliance of this strand. The base or background color of this material is a honey tone.
Opal is particularly hard to photograph as the color it displays is not actually contained in the stone itself but a function of the light that is diffracted as it passes thru the stone. The play of color that we see is a function of structure of the material and will vary depending upon the type of light it is exposed to as well as the angle from which it is viewed.
The rondel beads in this strand range from approx. 11 mm down to 5 mm. It is strung on a high-strength material called Spectra. It is 10-15 times stronger than steel yet flexible and light weight. This material allows your necklace to move and feel like it was strung on silk but it is much stronger and very abrasion resistant so it will most likely never have to be re-strung.
Learn more about Opal at this link.