Type of jewel: Vintage antique tourbillon diamond ring (tourbillon is French for twister) Condition: very good Style: Vintage antique Era: ca. 1900 Theme: This kind of ring is designated in French by the name 'tourbillon' which translates in English to 'twirler', 'twister' or 'whirlwind', obvious because of its original design. Material: 18K yellow gold and details in white gold or platinum (touchstone tested) Diamond(s): Thirteen senaille and rose cuts. A senaille is a simplified rose cut diamond, a small diamond chip with perhaps a few polished facets. We do not have the weight of these diamonds which is normal in our trade when it comes to senailles or rose cuts. All diamonds in our vintage and antique jewellery are verified by the IJGC-lab to confirm whether they are natural or lab-grown. We do not offer any pieces with lab-grown diamonds. Thus, we assure that all diamonds in this jewel are 100% natural. Birth and month stones: Diamond is the birthstone (or month stone) for April. Hallmarks: No trace. Dimensions: band width top of ring 1,18 cm (0,46 inch) - See picture with a ruler in cm and inches Weight: 2,80 gram (1,80 dwt) Ring size: EU-57 & 18¼, USA-8 , UK-P½ Adin reference Nº: 24129-0360 - Accompanied by a professional report of authenticity for your peace of mind. - Shipped insured and registered for your security, though you're most welcome to collect in person. - For shipments outside the EU, import duties and other charges may apply. We advise checking this in advance. - We invite you to browse through our customer feedback to discover the level of satisfaction we consistently provide. - See more of our products, visit: https://auction.catawiki.com/lotsfrom/Adin - Antique and vintage jewellery often undergoes thoughtful refurbishment, remodelling, or repairs to enhance its longevity and wearability. Such pieces frequently bear marks of this tender care. Furthermore, we present our antique and vintage jewellery in its authentic state, refraining from removing scratches or applying rhodium plating to white gold items. Our priority is to preserve the genuine allure and history of each piece. However, as the new owner, you have the option to take it to a local goldsmith for a cosmetic refresh, should you choose.