This is the Mod Lob. A flat more geometric take on a lobster clasp with a large paperclip style bail. 14k yellow gold. Length - 7/8" including bail. Bail opening - 9.3x2.3mm. Width - 1/4". 0.9g. New construction.
Per request the mode lob is also available with a regular round jump ring bail. Length - 5/8" including bail. Bail opening - 3.2mm from top of lobster to top of bail, but right to left is 4.4mm. .9g. New construction.
