Tiffany & Co. .54 Ct Lucida Cut Diamond Engagement Ring  G-H, VVS2-VS1 IGI Cert
Tiffany & Co. .54 Ct Lucida Cut Diamond Engagement Ring  G-H, VVS2-VS1 IGI Cert
Tiffany & Co. .54 Ct Lucida Cut Diamond Engagement Ring  G-H, VVS2-VS1 IGI Cert
Tiffany & Co. .54 Ct Lucida Cut Diamond Engagement Ring  G-H, VVS2-VS1 IGI Cert
Tiffany & Co. .54 Ct Lucida Cut Diamond Engagement Ring  G-H, VVS2-VS1 IGI Cert
Tiffany & Co. .54 Ct Lucida Cut Diamond Engagement Ring  G-H, VVS2-VS1 IGI Cert
Tiffany & Co. .54 Ct Lucida Cut Diamond Engagement Ring  G-H, VVS2-VS1 IGI Cert
Tiffany & Co. .54 Ct Lucida Cut Diamond Engagement Ring  G-H, VVS2-VS1 IGI Cert
Tiffany & Co. .54 Ct Lucida Cut Diamond Engagement Ring  G-H, VVS2-VS1 IGI Cert
Tiffany & Co. .54 Ct Lucida Cut Diamond Engagement Ring  G-H, VVS2-VS1 IGI Cert
Tiffany & Co. .54 Ct Lucida Cut Diamond Engagement Ring  G-H, VVS2-VS1 IGI Cert
Tiffany & Co. .54 Ct Lucida Cut Diamond Engagement Ring  G-H, VVS2-VS1 IGI Cert
Tiffany & Co. .54 Ct Lucida Cut Diamond Engagement Ring  G-H, VVS2-VS1 IGI Cert

Tiffany & Co. .54 Ct Lucida Cut Diamond Engagement Ring G-H, VVS2-VS1 IGI Cert

Regular price $6,150 (Est. Retail) Sale price$3,150
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A Vintage Tiffany & Co. Lucida® engagement ring featuring a 0.54 ct Lucida cut diamond set in platinum. The diamond is graded G-H color and VVS2–VS1 clarity and is laser inscribed with its serial number. Comes with an IGI certificate confirming the specifications. This proprietary Tiffany cut—no longer in production—combines brilliance with crisp, modern lines.
Crafted in solid PT950 platinum, the ring weighs 4.0 grams and bears the hallmarks: © Tiffany & Co., Lucida PT950, D0.54CT, and a unique serial number. Recently polished and in excellent condition.

About the Collection:
Introduced in 1999, Tiffany’s Lucida® collection was designed to showcase the brilliance of a square-cut diamond with the elegance of clean, modern geometry. Named after the brightest star in a constellation, Lucida was Tiffany's answer to contemporary minimalism—sophisticated, sculptural, and distinctively modern. Now discontinued, Lucida rings have become sought-after collector’s pieces, prized for their bold architecture and timeless appeal.

Condition Report :
Excellent condition. Polished to like-new finish. Inscriptions are sharp and fully legible. Very minor signs of wear under magnification, consistent with age.

Ring Specifications:
  • Brand: Tiffany & Co.
  • Collection: Lucida
  • Metal: Platinum (PT950)
  • Finger Size: 4.5 (can be resized)
  • Weight: 4.0 grams
  • Hallmarks: © Tiffany & Co., Lucida PT950, D0.54CT, Serial Number
Diamond Specifications:
  • Cut: Lucida (Tiffany proprietary)
  • Carat Weight: 0.54 ct
  • Color: G–H
  • Clarity: VVS2–VS1
  • Polish: Very Good
  • Symmetry: Very Good
  • Inscription: Yes
  • Certification: IGI
  • Estimated Retail Price: $6,150
Package Includes:
  • IGI Certificate
  • Black Tiffany & Co. suede inner box
  • Tiffany & Co. blue outer box with white satin ribbon


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 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.

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

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