This is is an antique Art Nouveau or early Edwardian yellow gold stick pin.
The back view provides several notable details about its construction and age:
The Setting: The central blue stone is safely nestled in a closed-back bezel setting, typical for early 20th-century craftsmanship.
The Pin Joint: The long pin stem is securely soldered directly to the reverse side of the openwork geometric framework, using a slightly darker solder point consistent with historical jewelry assembly.
The Findings: The barrel-shaped brass piece attached lower on the stem is a vintage or antique stick pin clutch (or protector), which screws or slides onto the sharp tip to keep the pin from slipping out of a tie, lapel, or scarf.
The retail market value for an authentic antique gold and sapphire stick pin of this style typically ranges from $200 to $850, depending on several critical material factors. Because a final valuation requires physical verification, it is helpful to understand how different components impact its worth.
Key Value Drivers & Market Pricing
The final price of antique jewelry depends largely on the purity of the precious metals used and the authenticity of the gemstone:
Gold Karat Weight (The Framework):
If the stick pin head and stem are crafted from 10K or 14K solid gold, its market value usually sits between $350 and $850 at specialty retailers.
If it is made of low-karat 9K gold or is simply gold-filled / gold-plated, the value rests closer to $100 to $200.
Gemstone Authenticity (The Central Blue Stone):
A genuine natural blue sapphire (highly common in the Edwardian and Art Nouveau eras) commands the highest premium.
If the center stone is a blue paste glass or synthetic sapphire doublet (also frequent in costume jewelry of the period), the value drops closer to its base metal or scrap gold melt price.
The Stick Pin Clutch / Protector:
The barrel-shaped safety clutch attached to the stem appears to be made of brass. It is an aftermarket safety addition rather than part of the original gold pin construction and does not add significant financial value to the piece