This accessory is a vintage gold-tone love knot stick pin featuring a faceted green rhinestone or gemstone accent at its center. Stick pins of this type were traditionally used to secure cravats or ties, and they remain popular today as decorative lapel, hat, or scarf pins.

Because the pin lacks maker's marks or purity hallmarks (such as "14K" or "GF" for gold-filled), it is classified as vintage costume jewelry made of gold-tone plated base metal and a glass rhinestone.

Including a matching original end cap (also known as a safety clutch or bullet stopper) slightly elevates the completeness of the piece, bringing the total estimated market value to $15 to $25.

While the pin remains an unmarked costume piece, having the original, functional end cap makes it instantly wearable and more appealing to collectors of vintage accessories. 

Updated Value Factors

• Completeness: Buyers on platforms like eBay and Etsy actively seek pins that still have their clutches, as loose end caps must otherwise be purchased separately. 

• Age Context: Standard safety end caps became common additions to costume stick pins starting in the 1950s and 1960s. 

• Condition Checklist: For the pin to hit the top end of the $25 range, the clutch mechanism must slide on smoothly and grip the stem tightly without slipping.