Tiffany & Co. 1.10 Ct. Platinum Harmony Diamond Solitaire Engagement Ring - H VS1
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COMING SOON — by 4/27/2026 Tiffany & Co. Platinum Harmony 1.10ct Diamond Solitaire Engagement Ring — H/VS1
A stunning example of Tiffany's Harmony setting — a more sculptural, modern alternative to the Classic Setting, distinguished by its gently tapered, organically curved band that widens elegantly toward the basket. The 1.10ct round brilliant diamond is graded H in color — near colorless, facing up bright and white in the setting — and VS1 in clarity, one step away from VVS, with inclusions undetectable even under most conditions. Cut grade is Excellent. At just over one carat, this is a meaningful size threshold that carries both visual and sentimental weight. GIA certified.
The Tiffany Harmony setting was designed to evoke the perfect balance between the diamond and the band — the flowing, sculptural shank frames the stone without competing with it, giving the ring a quietly modern elegance that distinguishes it from more traditional solitaires.
Condition: Excellent — presenting as new.
Details
- Brand: Tiffany & Co.
- Collection: Tiffany Harmony
- Metal: Platinum
- Finger Size: 6.5 — resizing available upon request
- Diamond: Round Brilliant, 1.10ct, H color, VS1 clarity, Excellent cut
- GIA Certified
- Our Price: $8,750
- Tiffany Retail: $17,500
- Ready to Ship: April 27, 2026
What's Included
- Ring
- GIA Diamond Certificate
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| Conversion Chart For Ring Size | |||||||
| Sizes | Inside Diameter | Inside Circumference | |||||
| United States and Canada | UK, Ireland, Australia, and New Zealand | India, China, Japan, South America | Italy, Spain, Netherlands, Switzerland |
(in) | (mm) | (in) | (mm) |
| 0 | 0.458 | 11.63 | 1.44 | 36.5 | |||
| 1/4 | 0.466 | 11.84 | 1.46 | 37.2 | |||
| 1/2 | A | 0.474 | 12.04 | 1.49 | 37.8 | ||
| 3/4 | A 1/2 | 0.482 | 12.24 | 1.51 | 38.5 | ||
| 1 | B | 0.49 | 12.45 | 1.54 | 39.1 | ||
| 1 1/4 | B 1/2 | 1 | 0.498 | 12.65 | 1.56 | 39.7 | |
| 1 1/2 | C | 0.5 | 0.506 | 12.85 | 1.59 | 40.4 | |
| 1 3/4 | C 1/2 | 1 | 0.514 | 13.06 | 1.61 | 41.0 | |
| 2 | D | 2 | 1.75 | 0.522 | 13.26 | 1.64 | 41.7 |
| 2 1/4 | D 1/2 | 2.25 | 0.53 | 13.46 | 1.67 | 42.3 | |
| 2 1/2 | E | 3 | 3 | 0.538 | 13.67 | 1.69 | 42.9 |
| 2 3/4 | E 1/2 | 3.5 | 0.546 | 13.87 | 1.72 | 43.6 | |
| 3 | F | 4 | 4.25 | 0.554 | 14.07 | 1.74 | 44.2 |
| 3 1/4 | F 1/2 | 5 | 4.75 | 0.562 | 14.27 | 1.77 | 44.8 |
| 3 1/2 | G | 5.5 | 0.57 | 14.48 | 1.79 | 45.5 | |
| 3 3/4 | G 1/2 | 6 | 6 | 0.578 | 14.68 | 1.82 | 46.1 |
| 4 | H | 7 | 6.75 | 0.586 | 14.88 | 1.84 | 46.8 |
| 4 1/4 | H 1/2 | 7.5 | 0.594 | 15.09 | 1.87 | 47.4 | |
| 4 1/2 | I | 8 | 8 | 0.602 | 15.29 | 1.89 | 48.0 |
| 4 3/4 | J | 8.75 | 0.61 | 15.49 | 1.92 | 48.7 | |
| 5 | J 1/2 | 9 | 9.25 | 0.618 | 15.70 | 1.94 | 49.3 |
| 5 1/4 | K | 10 | 0.626 | 15.90 | 1.97 | 50.0 | |
| 5 1/2 | K 1/2 | 10 | 10.5 | 0.634 | 16.10 | 1.99 | 50.6 |
| 5 3/4 | L | 11.25 | 0.642 | 16.31 | 2.02 | 51.2 | |
| 6 | L 1/2 | 11 | 11.75 | 0.65 | 16.51 | 2.04 | 51.9 |
| 6 1/4 | M | 12 | 12.5 | 0.658 | 16.71 | 2.07 | 52.5 |
| 6 1/2 | M 1/2 | 13 | 13.25 | 0.666 | 16.92 | 2.09 | 53.1 |
| 6 3/4 | N | 13.75 | 0.674 | 17.12 | 2.12 | 53.8 | |
| 7 | N 1/2 | 14 | 14.5 | 0.682 | 17.32 | 2.14 | 54.4 |
| 7 1/4 | O | 15 | 0.69 | 17.53 | 2.17 | 55.1 | |
| 7 1/2 | O 1/2 | 15 | 15.75 | 0.698 | 17.73 | 2.19 | 55.7 |
| 7 3/4 | P | 16.25 | 0.706 | 17.93 | 2.22 | 56.3 | |
| 8 | P 1/2 | 16 | 17 | 0.714 | 18.14 | 2.24 | 57.0 |
| 8 1/4 | Q | 17.5 | 0.722 | 18.34 | 2.27 | 57.6 | |
| 8 1/2 | Q 1/2 | 17 | 18.25 | 0.73 | 18.54 | 2.29 | 58.3 |
| 8 3/4 | R | 19 | 0.738 | 18.75 | 2.32 | 58.9 | |
| 9 | R 1/2 | 18 | 19.5 | 0.746 | 18.95 | 2.34 | 59.5 |
| 9 1/4 | S | 20.25 | 0.754 | 19.15 | 2.37 | 60.2 | |
| 9 1/2 | S 1/2 | 19 | 20.75 | 0.762 | 19.35 | 2.39 | 60.8 |
| 9 3/4 | T | 21.5 | 0.77 | 19.56 | 2.42 | 61.4 | |
| 10 | T 1/2 | 20 | 22 | 0.778 | 19.76 | 2.44 | 62.1 |
| 10 1/4 | U | 21 | 22.75 | 0.786 | 19.96 | 2.47 | 62.7 |
| 10 1/2 | U 1/2 | 22 | 23.25 | 0.794 | 20.17 | 2.49 | 63.4 |
| 10 3/4 | V 1/2 | 24 | 0.802 | 20.37 | 2.52 | 64.0 | |
| 11 | V 1/2 | 23 | 24.75 | 0.81 | 20.57 | 2.54 | 64.6 |
| 11 1/4 | W 1/2 | 25.25 | 0.818 | 20.78 | 2.57 | 65.3 | |
| 11 1/2 | W 1/2 | 24 | 26 | 0.826 | 20.98 | 2.59 | 65.9 |
| 11 3/4 | X | 26.5 | 0.834 | 21.18 | 2.62 | 66.6 | |
| 12 | X 1/2 | 25 | 27.25 | 0.842 | 21.39 | 2.65 | 67.2 |
| 12 1/4 | Y | 27.75 | 0.85 | 21.59 | 2.67 | 67.8 | |
| 12 1/2 | Z | 26 | 28.5 | 0.858 | 21.79 | 2.70 | 68.5 |
| 12 3/4 | Z 1/2 | 29 | 0.866 | 22.00 | 2.72 | 69.1 | |
| 13 | 27 | 29.75 | 0.874 | 22.20 | 2.75 | 69.7 | |
| 13 1/4 | Z1 | 30.5 | 0.882 | 22.40 | 2.77 | 70.4 | |
| 13 1/2 | 31 | 0.89 | 22.61 | 2.80 | 71.0 | ||
| 13 3/4 | Z2 | 31.75 | 0.898 | 22.81 | 2.82 | 71.7 | |
| 14 | Z3 | 32.25 | 0.906 | 23.01 | 2.85 | 72.3 | |
| 14 1/4 | 33 | 0.914 | 23.22 | 2.87 | 72.9 | ||
| 14 1/2 | Z4 | 33.5 | 0.922 | 23.42 | 2.90 | 73.6 | |
| 14 3/4 | 34.25 | 0.93 | 23.62 | 2.92 | 74.2 | ||
| 15 | 34.75 | 0.938 | 23.83 | 2.95 | 74.8 | ||
| 15 1/4 | 35.5 | 0.946 | 24.03 | 2.97 | 75.5 | ||
| 15 1/2 | 36.25 | 0.954 | 24.23 | 3.00 | 76.1 | ||
| 15 3/4 | 36.75 | 0.962 | 24.43 | 3.02 | 76.8 | ||
| 16 | 37.5 | 0.97 | 24.64 | 3.05 | 77.4 | ||
30 day returns : No hassle, no cost, no questions asked.
We want you to be 100% thrilled with your purchase. In case you want to return your purchase within 30 days of receipt, please call us during business hours, or send an email to: office@thediamondoak.com with your name and order information, and we will email you a pre-paid / insured shipping label with shipping instructions for the return. To be eligible for a return, your item must be in the same condition received, and in its original packaging.
Once we receive the item and original packaging, we will refund you using the same method of purchase. (International shipments and Custom Orders please see restrictions below). Items returned which were altered or or not in the condition received, will not be accepted for returns and will be shipped back.
Restocking Fees: A Restocking fee of 3-6% will be applied to all returns based on method purchased; Bank wire: no fee , Credit Card: 3% , Payment Plans: 6%
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Custom Orders
A non-refundable 50% deposit is required. Refunds/returns will be decided on a case by case basis.
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Unfortunately, we cannot accept returns on items that have been altered, not in original condition, gift cards, or custom orders as specified above.
Exchanges
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