{"product_id":"vintage-french-star-sapphire-ring-in-18k-gold-c-1980s","title":"Vintage French Star Sapphire Ring","description":"\u003cdiv\u003eA bold and unusual vintage French ring, crafted in solid 18K yellow gold and set with a striking natural star sapphire. Dating from the 1980s, this piece is marked with the French eagle’s head hallmark, indicating Paris origin and a guaranteed gold fineness of 18 karats.\u003c\/div\u003e\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\u003cdiv\u003eAt the centre is a 2.1ct cabochon-cut sapphire displaying pronounced six-rayed asterism—a rare optical effect where light reflects in a star pattern due to fine rutile inclusions. These star formations are exposed when the sapphire is in direct sunlight or direct overhead lighting. The cabochon measures 8 x 6 x 4 mm and is set in an open-backed mount.\u003c\/div\u003e\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\u003cdiv\u003eThe gold setting is richly detailed with a pineapple-like crosshatched floral pattern around the bezel and down the shoulders, giving the ring a textured and almost sculptural quality. A sizing bar is currently fitted inside the band, making it a UK size I½ (US 4.5), but this could be removed to allow resizing up by approximately one size.\u003c\/div\u003e\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\u003cdiv\u003eThe ring measures 12mm north to south at the front and tapers to 4mm at the back. It weighs a substantial 11.69 grams.\u003c\/div\u003e\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\u003cdiv\u003eIn excellent condition, this vintage ring makes a striking impression—especially when its star comes to life under natural light. A beautiful and rare example of French goldsmithing with an optical twist.\u003c\/div\u003e\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\u003cdiv\u003e\t \u003c\/div\u003e","brand":"Ravensbury Antiques","offers":[{"title":"Default Title","offer_id":48604793438516,"sku":"1017810068","price":17261.0,"currency_code":"HKD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0708\/6784\/5428\/files\/0G2A4567.jpg?v=1748613783","url":"https:\/\/ravensburyantiques.com\/zh-hk\/products\/vintage-french-star-sapphire-ring-in-18k-gold-c-1980s","provider":"Ravensbury Antiques","version":"1.0","type":"link"}