Tiffany & Co. Platinum 0.70ct Diamond Classic Setting Solitaire Engagement Ring
Tiffany & Co. Platinum 0.70ct Diamond Classic Setting Solitaire Engagement Ring
Tiffany & Co. Platinum 0.70ct Diamond Classic Setting Solitaire Engagement Ring
Tiffany & Co. Platinum 0.70ct Diamond Classic Setting Solitaire Engagement Ring
Tiffany & Co. Platinum 0.70ct Diamond Classic Setting Solitaire Engagement Ring
Tiffany & Co. Platinum 0.70ct Diamond Classic Setting Solitaire Engagement Ring
Tiffany & Co. Platinum 0.70ct Diamond Classic Setting Solitaire Engagement Ring
Tiffany & Co. Platinum 0.70ct Diamond Classic Setting Solitaire Engagement Ring
Tiffany & Co. Platinum 0.70ct Diamond Classic Setting Solitaire Engagement Ring
Tiffany & Co. Platinum 0.70ct Diamond Classic Setting Solitaire Engagement Ring
Tiffany & Co. Platinum 0.70ct Diamond Classic Setting Solitaire Engagement Ring
Tiffany & Co. Platinum 0.70ct Diamond Classic Setting Solitaire Engagement Ring
Tiffany & Co. Platinum 0.70ct Diamond Classic Setting Solitaire Engagement Ring
Tiffany & Co. Platinum 0.70ct Diamond Classic Setting Solitaire Engagement Ring
Tiffany & Co. Platinum 0.70ct Diamond Classic Setting Solitaire Engagement Ring

Tiffany & Co. Platinum 0.70ct Diamond Classic Setting Solitaire Engagement Ring

Sale price$4,850
/

Monthly payments available with . Learn more

The definitive Tiffany engagement ring, in essentially unworn condition. Purchased March 2026 and never worn. This Classic Setting solitaire features a 0.70ct round brilliant diamond graded G in color — near colorless, facing up bright and white — and VS1 in clarity, one step away from VVS, with inclusions undetectable even under most conditions. Cut, polish, and symmetry are all graded Excellent, the highest level achievable, ensuring maximum light performance and brilliance. Set in Tiffany's iconic six-prong platinum basket setting on a smooth, rounded band. Tiffany laser inscription present and verified. Recently polished, presenting as new.

The Tiffany Classic Setting is the world's most recognized engagement ring, introduced by Charles Lewis Tiffany in 1886. Its six-prong design was revolutionary at the time, elevating the diamond above the band to maximize light exposure and brilliance. It remains the benchmark against which all solitaire engagement rings are measured.

Condition: Excellent — never worn, purchased March 2026. Recently polished, presents as new.

Details
  • Brand: Tiffany & Co.
  • Collection: Tiffany Classic Setting
  • Metal: Platinum
  • Hallmarks: © Tiffany & Co., PT950, D0.70ct, Serial Number
  • Finger Size: 6 — free resizing available, or at any Tiffany & Co. location for a small fee
  • Weight: 4.7 grams
  • Diamond: Round Brilliant, 0.70ct, G color, VS1 clarity, Excellent cut/polish/symmetry
  • Tiffany Laser Inscription: Yes
  • Estimated Retail: $9,450

What's Included
  • Ring
  • Tiffany & Co. Digital Diamond Certificate (original PDF)
  • Tiffany & Co. Digital Appraisal (original PDF)
  • Tiffany & Co. Digital Provenance Report (original PDF)
  • Original Tiffany & Co. Receipt
  • Original Tiffany & Co. inner and outer boxes with white satin ribbon


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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%

You may cancel an order at any time prior to shipment. Restocking fee will apply. 

Custom Orders

A non-refundable 50% deposit is required. Refunds/returns will be decided on a case by case basis.  

Damages and issues
Please inspect your order upon receiving and contact us immediately if the item is not what you expected or if you received the wrong item, so that we can evaluate the issue and make it right.

Exceptions / non-returnable items
Certain types of items cannot be returned. 

Unfortunately, we cannot accept returns on items that have been altered, not in original condition, gift cards, or custom orders as specified above.  

Exchanges
The fastest way to ensure you get what you want is to return the item you have, and once the return is accepted, make a separate purchase for the new item.

Every designer piece we sell is rigorously inspected and authenticated by our team of experts. Our extensive expert experience, and exacting authentication methods ensure every piece is a genuine and authentic creation from the designer. As such, we guarantee every piece to be 100% authentic or your money back.

It sounds like a cliche, but your satisfaction is actually really important to us. Our business philosophy begins and ends with an unwavering devotion to Customer service. In fact, it’s our favorite facet of the business.

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