Want to Speak to Mel? Click on 'Contact Seller' and then choose 'Other'. This is an ORIGINAL ANTIQUE ENGAGEMENT RING that was made in the ART DECO PERIOD of c1925 - c1935. It is made from PLATINUM. The ring is centrally prong-set with 1 OLD MINE CUT DIAMOND of I color, SI1 clarity that weighs 1.84 carats. This diamond is VERY VERY CLEAR with GORGEOUS SPARKLE and it is in the WHITE COLOR GRADE that is so hard to find in an antique diamond!! It has one small carbon inclusion above the culet, but you must study the diamond to find it. This center diamond comes with an EGL CERTIFICATE US62010601D and an APPRAISAL dated 12/5/2014 that states ESTIMATED RETAIL REPLACEMENT VALUE of $20,970 for the diamond alone. The diamond alone measures 7.63 x 7.06 x 5.08 mm. The ring?s mounting is detailed with 4 SYNTHETIC BLUE SAPPHIRES that weigh approx. .14 ctw. - synthetic colored gemstones were typical for the period. The ring is also set with 16 DIAMONDS of H-I-J color, SI to I clarity that weigh approx. .39 ctw. Two of these diamonds are ROSE CUTS and 13 are OLD MINE SINGLE CUTS and there is 1 brilliant cut that is a replacement. These diamonds are in the .005 - .05 ct range each. The head of the ring measures 11.38 mm north to south, 19 mm shoulder to shoulder and it sits 7.7 mm high off the finger. The ring size is a 5.75 and it has been resized. The total weight is 3.5 grams. There is an engraved detail on the sides of the shoulders and shank. WHO DOESN?T LOVE AN ANTIQUE ART DECO BIG DIAMOND ENGAGEMENT RING? I had a hard time getting good pics because the metal and diamonds are reflective. If interested, PLEASE don't hesitate to ask any questions or for comparison photos. I promise to get right to it! MEL IS HERE TO PROMPTLY HELP! Be sure to SAVE THIS SELLER so our new items show in your feed! *A NOTE ABOUT OUR PHOTOGRAPHY ? Taking pictures of diamonds to be displayed on a computer screen can be difficult, often resulting in the diamonds looking dark (especially rose cut diamonds) when in reality they are not. If you are looking at any of our pictures and feel that the diamonds look dark, please refer to the description of the item that states the accurate color and clarity of the stones. Also, jewelry and/or diamond grading is done under 10X magnification. When you super-size our photos you will see the item in 100X magnification. Please be aware that you may see things that cannot be seen with your eyes or a jeweler?s loupe. Sometimes these magnified images can make the item look distorted or appear to have problems when in reality it is fine. I list only high quality pieces and avoid those with problems or in need of repair unless it is described as such in the listing. If you are seeing something that you are not sure of, please inquire about it. REFUND POLICY: The buyer has the right to a refund should the item not be suitable. The item must be promptly returned in its original condition without damage, alteration, repair or signs of wear when examined under a 10x jewelers loupe. Buyer is responsible for return shipping fees unless we have mistakenly misrepresented the item. I realize there is risk on the buyer?s side when bidding on an expensive jewelry item. If you would feel more comfortable speaking to me in person before bidding on an item, I welcome all calls. We are not in the business to cheat or fool people and are here to answer any of your questions. PLEASE CHECK MELS ANTIQUE JEWELRY FEEDBACK! WE ARE A LEGITIMATE AND HONEST COMPANY, SO YOU CAN BUY BID WITH CONFIDENCE!