Vintage Large Oval Blue Art Glass Mood Brooch with Rope Border
Unbranded · Jewelry & Watches > Vintage Costume Jewelry
Era / Decade
1970s (mid-to-late 1970s dating based on the mood-stone trend and oxidized metal finish)
Material
Cabochon-cut art glass with thermotropic (mood) properties and a silver-tone base metal alloy with an antiqued or oxidized finish
Condition
Good to Very Good; contains significant surface patina/tarnish on the metal frame and minor surface scratches on the glass consistent with age and use.
Demand Level
Moderate; mood jewelry remains a steady seller for vintage collectors and Gen Z buyers interested in 'Y2K' and 'Retro' aesthetics.
Resale Value
Estimated Resale Value
$25.00 - $45.00
Estimated Retail Value
$5.00 - $10.00 (original 1970s pricing equivalent to roughly $25 today)
Comparable Sales
Similar large oval mood brooches from the 1970s typically sell for $18-$32 on eBay, while listings on Etsy with better staging can reach $40-$55.
Description
This striking vintage mood brooch features a large, oval, high-domed 'mood stone' cabochon that shifts through deep blues, greens, and teals based on temperature. The stone is securely set within a classic silver-toned frame featuring an intricate rope-twist border design. Measuring approximately 1.5 to 2 inches in length, this statement piece captures the whimsical '70s aesthetic. It features a traditional C-clasp or safety pin closure on the reverse.
Key Features
Large statement size; desirable color-changing mood glass; classic 1970s bohemian aesthetic; rope-twist border detail; intact color-changing properties (no 'dead' or black spots).
Authenticity Indicators
Construction style (crimp-set stone, rope border) is typical of mass-produced 1970s costume jewelry; medium confidence as an authentic vintage piece rather than a modern reproduction.
Flaws to Note
Heavy oxidation on the metal frame (can be polished or left for vintage look); light scratching on glass surface; potential for 'dead' spots if the liquid crystal seal has been compromised over time (not visible in photo).
Selling Guide
Where to Sell
Etsy (best for vintage collectors), eBay (broad reach), and Depop (appeals to the younger demographic interested in 70s/90s trends).
Selling Tips
Use keywords like 'Vintage 70s Mood Stone,' 'Boho Statement Brooch,' and 'Color Changing.' Take a short video showing the color change when held in the hand to prove the thermotropic crystals are still active. Mention the patina—some buyers prefer the aged 'found' look.