9k Yellow Gold Tanzanite & Diamond Ring — Vintage 3-Stone Halo Style, Hallmarked 9CT, UK Antique Estate Engagement Ring

9-sentence Etsy description (SEO-focused; short sentences, buyer-friendly keywords included):
This vintage 9k yellow gold tanzanite ring features a vivid blue-violet oval center stone. The center tanzanite is flanked by two brilliant accent diamonds for extra sparkle. Hallmarked 9ct inside the band for verified gold purity. Classic three-stone design with delicate shoulders and a timeless estate jewelry look. Perfect as a vintage engagement ring, anniversary gift, or collector’s piece. Lightweight, comfortable fit suitable for everyday wear. Professionally cleaned and ready to ship from our shop. Ring size included on listing; resizing available on request. Comes with soft pouch and gift-ready packaging.

Era and approximate year (based on style and 9k hallmark assumption):
Likely mid-20th century to late 20th century (1950s–1990s). The 9k/9ct hallmark and three-stone tanzanite layout suggest a vintage estate piece rather than antique (pre-1920). If the hallmark includes a UK assay office mark and letter date stamp, I can pinpoint the exact year — please send a close-up photo of the full hallmark.
resizing can be done at extra COST