Engagement ring from the Ideal Cut Astor collection by Blue Nile featuring a perfectly Cut center cushion modified brilliant diamond weighing 1.31 cts. F color , VS2 clarity certified by the GIA (Gemological Institute of America) with excellent polish and symmetry finely crafted in a four prong platinum solitaire setting. Diamond is laser inscribed with the GIA number and the Astor logo.
Ring Specifications
- Brand: Blue Nile
- Style: Astor
- Hallmarks: Pt950
- Finger Size: 6 (Can be resized)
- Weight: 3.0 grams
Diamond Specifications
- Diamond Shape: Cushion Brilliant
- Diamond Weight: 1.31 carats
- Diamond Color/ Clarity: F VS2
- GIA Certificate: 2195263755
- Inscriptions: GIA, Astor
- Polish: Excellent
- Symmetry: Excellent
- Estimated Retail: $11,500
Package Includes
- Original Certificate from the GIA
- Original Certificate from Blue Nile
- Appraisal Report from Blue Nile
- Original Inner and Outer box from Blue Nile
Important Note for International Buyers:
- Import duties, taxes, and fees are the buyers responsibility.
- These charges are NOT included in the item price or shipping cost.
- Please check with your country's customs offices to determine any additional costs prior to bidding or buying any item.
| 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.
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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.
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Please see our return policy for Custom, and International orders.