They don't have the spiky, studded look of the new Lady Gaga earphones, but Audio-Technica's ATH-CKF303 in-ear and foldable ATH-FW33 on-ear Bijoue headphones do have a "jewel-cut" design and fit squarely (or is it octagonally?) in the company's FashionFidelity line.
The new models come in a variety of colors and list for $29.95 and $39.95. One suggestion for Audio-Technica: add an integrated microphone. Diamonds may be a girl's best friend but hey, she needs to make calls, too.