{"product_id":"antique-art-deco-cko-old-european-cut-diamond-ring","title":"Antique Art Deco Cummins-Kremer CKO Old European Cut Diamond Solitaire | 18K White Gold","description":"\u003cp\u003eRefined and distinctly architectural, this authentic Art Deco Old European Cut diamond solitaire embodies the clean geometry and exceptional craftsmanship that defined the early years of the Art Deco era. Crafted in solid 18K white gold, the ring features a beautifully proportioned Old European Cut diamond set in a square four-prong mounting above finely hand-engraved shoulders that retain remarkable crispness more than a century after their creation.\u003c\/p\u003e\n\u003cp\u003eThe elegant pierced gallery and meticulously engraved orange blossom motifs reflect the artistry of early twentieth-century jewelers, who combined structural precision with delicate hand finishing. Rather than relying on elaborate ornamentation alone, the ring achieves its beauty through balanced proportions, thoughtful engineering, and refined decorative engraving. Its timeless design remains every bit as wearable today as when it was first crafted, making it equally appealing as an engagement ring or an addition to a fine antique jewelry collection.\u003c\/p\u003e\n\u003cp\u003eBearing the distinctive CKO maker's mark, attributed to Cummins-Kremer Co. of Los Angeles, California, this authentic Art Deco solitaire represents both exceptional American craftsmanship and the enduring beauty that defines the finest antique jewelry.\u003c\/p\u003e\n\u003ch3\u003eAt A Glance\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAuthentic Antique Art Deco Diamond Solitaire Ring\u003c\/li\u003e\n\u003cli\u003eOld European Cut Natural Diamond\u003c\/li\u003e\n\u003cli\u003eAttributed to Cummins-Kremer Co. (CKO)\u003c\/li\u003e\n\u003cli\u003eSolid 18K White Gold\u003c\/li\u003e\n\u003cli\u003eHand Engraved Floral Motif\u003c\/li\u003e\n\u003cli\u003eCirca 1925–1930\u003c\/li\u003e\n\u003cli\u003eSize 6\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMetal:\u003c\/strong\u003e Solid 18K White Gold\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHallmarks:\u003c\/strong\u003e CKO, 18K\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaker:\u003c\/strong\u003e Attributed to Cummins-Kremer Co. (CKO), Los Angeles, California\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEra:\u003c\/strong\u003e Art Deco, Circa 1925–1935\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCenter Stone:\u003c\/strong\u003e Natural Old European Cut Diamond\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiamond Size:\u003c\/strong\u003e Approximately 5.2 mm, estimated approximately 0.50–.60 carat\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccent Stones:\u003c\/strong\u003e None\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRing Weight:\u003c\/strong\u003e 2 grams\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRing Size:\u003c\/strong\u003e 6\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe Diamond\u003c\/h3\u003e\n\u003cp\u003eThe ring is centered on a lively Old European Cut natural diamond that displays the characteristics collectors admire in antique hand-cut stones. Its high crown, small table, and open culet create the broad flashes of light and distinctive facet pattern that distinguish Old European Cuts from their modern counterparts.\u003c\/p\u003e\n\u003cp\u003eUnlike modern brilliant-cut diamonds that emphasize intense scintillation, Old European Cut diamonds produce larger, slower flashes of light with exceptional depth and personality. The diamond remains bright and lively while preserving the handcrafted charm that makes these historic cuts increasingly sought after by collectors and antique jewelry enthusiasts.\u003c\/p\u003e\n\u003ch3\u003eThe Design\u003c\/h3\u003e\n\u003cp\u003eCrafted in solid 18K white gold, the ring reflects the restrained elegance of the Art Deco period through clean architectural lines and meticulous hand engraving. The beautifully engraved orange blossom motifs along the shoulders remain remarkably crisp, demonstrating the quality of both the original craftsmanship and the ring's careful preservation.\u003c\/p\u003e\n\u003cp\u003eThe elevated square four-prong mounting is supported by an open pierced gallery that allows light to enter beneath the diamond while creating an airy, balanced profile. Every element of the design serves both beauty and function, resulting in a refined solitaire that showcases the exceptional workmanship characteristic of fine American jewelry of the era.\u003c\/p\u003e\n\u003ch3\u003eMaker\u003c\/h3\u003e\n\u003cp\u003eThe interior of the shank bears the \u003cstrong\u003eCKO 18K\u003c\/strong\u003e hallmark, attributed to \u003cstrong\u003eCummins-Kremer Co.\u003c\/strong\u003e, an American jewelry manufacturer based in Los Angeles, California. Period jewelry trade directories record the company's \u003cstrong\u003eCKO\u003c\/strong\u003e trademark, linking the mark to a documented early twentieth-century maker.\u003c\/p\u003e\n\u003cp\u003eJewelry retaining an identifiable maker's mark offers collectors an additional connection to its history, preserving not only the craftsmanship of the piece itself but also the legacy of the workshop that created it.\u003c\/p\u003e\n\u003ch3\u003eCondition\u003c\/h3\u003e\n\u003cp\u003eVery good antique condition consistent with age and careful preservation.\u003c\/p\u003e\n\u003cp\u003eThe hand engraving remains exceptionally crisp throughout the shoulders and gallery, while the mounting retains its original architectural form with only minor signs of normal wear expected in an authentic antique ring. The diamond is secure in its setting, and the ring presents beautifully for both everyday wear and special occasions.\u003c\/p\u003e\n\u003ch3\u003ePhotography Note\u003c\/h3\u003e\n\u003cp\u003ePhotographed under soft-spectrum lighting and high magnification to accurately capture the brilliance of the Old European Cut diamond, the crisp hand engraving, and the architectural details of the setting. Enlarged images are intended to reveal gemstone characteristics, surface condition, craftsmanship, and construction details beyond what is typically visible during normal viewing.\u003c\/p\u003e","brand":"The TERA Collection","offers":[{"title":"Default Title","offer_id":52640454869303,"sku":null,"price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0986\/8889\/3239\/files\/Antique_Art_Deco_Cummins-Kremer_CKO_Old_European_Cut_Diamond_Ring_Front.jpg?v=1783599588","url":"https:\/\/theteracollection.com\/products\/antique-art-deco-cko-old-european-cut-diamond-ring","provider":"The TERA Collection","version":"1.0","type":"link"}