This necklace with gorgeous melon beads was just posted on EarthlyAdornments.com / Etsy; the description follows:

"Vintage necklace of old Chinese glass melon beads and crystal glass spacers. (nlbd1135)

This is a necklace of fabulous teal Peking glass beads. They're old, hand made, full of bubbles. Necklace is hand knotted on silk thread with tiny crystal glass spacers. Sterling silver box clasp with a clear stone. this is a European or American necklace, but I believe the beads are old Chinese. 33 inches in length.
• Vintage item from the 1920s"