Thanks to an alert reader, I discovered J.Crew offers a version of their famous
bubble necklace at their outlet store locations as well as online at
factory.jcrew.com. This "Factory Resin Droplet Necklace" comes in tangerine, red, cobalt or neon pink for $61.50 (down from $88). It measure 23 3/4", so it's pretty big.
Now, Charlotte Russe has a "mini" bubble necklace option for $12.99 in tangerine, aqua or black. NOTE: This necklace only measures 14" so it's significantly smaller. But both are cute! Click either image for details.