GIA Tiffany & Co. Platinum 10.66ct. Aquamarine and Diamond Halo Cocktail Ring
GIA Tiffany & Co. Platinum 10.66ct. Aquamarine and Diamond Halo Cocktail Ring
GIA Tiffany & Co. Platinum 10.66ct. Aquamarine and Diamond Halo Cocktail Ring
GIA Tiffany & Co. Platinum 10.66ct. Aquamarine and Diamond Halo Cocktail Ring
GIA Tiffany & Co. Platinum 10.66ct. Aquamarine and Diamond Halo Cocktail Ring
GIA Tiffany & Co. Platinum 10.66ct. Aquamarine and Diamond Halo Cocktail Ring
GIA Tiffany & Co. Platinum 10.66ct. Aquamarine and Diamond Halo Cocktail Ring
GIA Tiffany & Co. Platinum 10.66ct. Aquamarine and Diamond Halo Cocktail Ring
GIA Tiffany & Co. Platinum 10.66ct. Aquamarine and Diamond Halo Cocktail Ring
GIA Tiffany & Co. Platinum 10.66ct. Aquamarine and Diamond Halo Cocktail Ring
GIA Tiffany & Co. Platinum 10.66ct. Aquamarine and Diamond Halo Cocktail Ring
GIA Tiffany & Co. Platinum 10.66ct. Aquamarine and Diamond Halo Cocktail Ring
GIA Tiffany & Co. Platinum 10.66ct. Aquamarine and Diamond Halo Cocktail Ring
GIA Tiffany & Co. Platinum 10.66ct. Aquamarine and Diamond Halo Cocktail Ring
GIA Tiffany & Co. Platinum 10.66ct. Aquamarine and Diamond Halo Cocktail Ring
GIA Tiffany & Co. Platinum 10.66ct. Aquamarine and Diamond Halo Cocktail Ring
GIA Tiffany & Co. Platinum 10.66ct. Aquamarine and Diamond Halo Cocktail Ring

GIA Tiffany & Co. Platinum 10.66ct. Aquamarine and Diamond Halo Cocktail Ring

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Complimentary Shipping and insurance for U.S and most International Orders

International Orders are subject to local Customs and Duties payable on arrival.


This Tiffany & Co. cocktail ring is a true masterpiece of fine craftsmanship made of exquisite platinum. The centerpiece of the ring is a magnificent oval aquamarine, set inside a bezel weighing an...


This Tiffany & Co. cocktail ring is a true masterpiece of fine craftsmanship made of exquisite platinum. The centerpiece of the ring is a magnificent oval aquamarine, set inside a bezel weighing an impressive 10.66 carats whose stunning blue-green hue, size and quality make it a true showstopper, surrounded by a single row of bead set round brilliant cut diamonds on a halo and high gallery split shank weighing .57 carats total weight.  Aquamarine center stone is certified by The Gemological Institute of America (GIA). Fully hallmarked with logo and metal content to ensure its authenticity.

Ring Specifications

  • Brand: Tiffany & Co
  • Style: Cocktail
  • Hallmarks: ©Tiffany & Co. PT950
  • Metal: Platinum
  • Weight: 13.6 grams
  • Finger Size: 7 ( Can be resized)
  • Main Stone: Aquamarine
  • Main Stone Shape: Oval
  • Main Stone Carat Weight: 10.66 
  • GIA certificate Number : 2225930776
  • Number of Side Diamonds: 71
  • Side Diamond Shape: Round
  • Side Diamond Carat Weight: 0.57
  • Condition: Very Good, Minor abrasions present on the surface of the stone

Package Includes

  • Original Appraisal from Tiffany & Co.
  • Original Receipt from Tiffany & Co.
  • Original Report from The Gemological Institute of America (GIA)
  • Original Inner and Outer box from Tiffany & Co.

 International Buyers: If you are outside of the US,  Import duties and local taxes are buyers' responsibility and will be collected by FedEx directly upon delivery.   Please check with your local FedEx for details. 

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, please send an email within 30 days of receipt to:  support@thediamondoak.com and we will email you a pre-paid shipping label with shipping instructions for the return. 

Once we receive the item and original packaging, both in original condition, we will refund you in the same method purchased, with no restocking fees. (International shipments and Custom Orders please see restrictions below)

You may cancel an order at any time prior to shipment. Custom Orders require a non-refundable 50% deposit.  

Authenticity Guarantee.

The Diamond Oak has over 30 years experience buying and selling Diamonds and Pre-Owned Jewelry. Our experts verify all signed and branded pre-owned Jewelry for their authenticity.

The authenticity of any product is guaranteed authentic, or your money back.  

International returns 

International returns can receive a return shipping label within 30 days of receipt. A restocking fee of 2-5% of purchase will be deducted.

Custom Orders:

Custom and Made to Order Items are not returnable.  At our discretion, Partial refunds will be authorized. If we sized your ring, a $100-$300 labor, precious metal charge will be deducted from your refund.

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.

Please see our return policy for Custom, and International orders.

Call  Call: +1 212-799-7153 WhatsApp  WhatsApp: +1 (917) 842-7273


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