Vintage 19k Portuguese Gold Black Onyx Statement Ring Size 8.5 Hallmarked

Vintage 19k Portuguese Gold Ring with Genuine Black Onyx — Size 8.5 A genuinely special piece of estate jewelry. Portuguese 19k gold is a distinct and highly regarded standard (approximately 79.2% pure gold), hallmarked and regulated by the Portuguese government — a mark of authentic, high-quality European craftsmanship. DETAILS: - Metal: Solid 19k Portuguese Gold (hallmarked) - Purity: ~79.2% pure gold (between 18k and 20k purity) - Stone: Genuine black onyx cabochon - Size: 8.5 - Style: Classic bold statement ring - Condition: Excellent — gently worn with minor surface scratches on band (normal patina for estate gold, does not affect stone or setting). No chips, cracks, or loose stone. WHY PORTUGUESE 19K GOLD? Portugal uses a unique gold standard not found in US jewelry. The 19k hallmark (often stamped 800 or with an owl/anchor assay mark) guarantees authenticity and purity verified by the Portuguese Assay Office — making this more valuable than standard 18k (75% purity). MEASUREMENTS: - Please confirm ring size with a local jeweler — size 8.5 as listed ✅ Free Poshmark authentication included (over $500) ✅ Ships carefully packaged ✅ Not eligible for bundle discounts Keywords: Portuguese gold ring 19k black onyx estate jewelry vintage statement ring hallmarked European gold size 8.5 genuine gemstone gift collector antique