I believe this gemstone is called Sodalite. It has an intense blue and is set in a silver tone roped frame. Overall size is 1” x ¾” and made by Swank. They are in excellent condition and will enhance any French cuff shirt.
All my cuff links and jewelry are sold in used, pre-owned condition. Vintage and Antique items by nature have some wear, imperfections and signs of use and age.
Swank Silver Tone Blue Stone Cufflinks Cuff Links
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When you buy vintage you are buying classic memories!