3 Carat Princess Cut Diamond Eternity Ring

Mini Buying Guide: 3 Carat Princess Cut Diamond Eternity Ring

The Princess Eternity Design
This elegant eternity ring features a continuous band of princess-cut diamonds, each securely set in classic prong settings. The sharp geometry and brilliant facets of the princess cut create a bold, modern sparkle while maintaining timeless elegance, making it ideal for both everyday luxury and special occasions.

Diamond Types & Options
This ring is available in both natural diamonds, known for their rarity and enduring value, and lab-grown diamonds, appreciated for their exceptional brilliance and ethical sourcing. You can choose the option that best matches your style and preference.

Carat Options for Eternity Ring
The design is available in total carat weights of 1.50, 2.00, 3.00, 4.00, and 5.00 carats, allowing you to select the desired level of brilliance and presence on the finger.

Stone Details & Setting
This version features 3 carats of princess-cut diamonds, with each stone weighing approximately 0.08 carats. The ring includes twenty-four stones in total, all set securely in prong settings to ensure durability and continuous sparkle around the band.

Metal Options
Choose from 14K or 18K white gold, yellow gold, rose gold, or platinum, offering versatile options to complement your personal style or existing jewelry collection.

Color & Clarity Grades
Lab-grown diamonds are available in VS1 clarity with F/G color, offering a bright, near-colorless appearance with excellent clarity. Natural diamonds are offered in SI1 clarity with G/H color, providing a balanced combination of beauty and value.

Accent Stone Types
Along with classic white diamonds, this ring can be customized with alternative accents such as Blue Sapphire, Pink Sapphire, Red Ruby, or Black Diamond for a more personalized expression.

Ring Size Options
The ring is available in US standard ring sizes ranging from 3 to 13, ensuring a comfortable and precise fit.

Design Highlight
With its continuous line of princess-cut diamonds and refined craftsmanship, this 3 Carat eternity ring delivers a perfect blend of modern structure and timeless brilliance, making it ideal as a wedding band, anniversary ring, or a meaningful stacking piece. Explore our Brilliant Princess Cut Diamond Anniversary Band range for more designs.

Customer Reviews

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Tom Verified Buyer

Nov 14, 2025

Helpful and wonderful collection

I wanted to gift something elegant to my wife, but I had no idea what kind of jewelry to buy. The staff helped me choose this beautiful band while keeping my budget in mind. They were truly helpful.

Randy Verified Buyer

Aug 16, 2023

Exactly as pictured!

Exactly as pictured. This is an adorable Princess Diamond Eternity Band. I am pleasantly surprised by its weight - it feels solid and was gifted to me by my husband on our anniversary. People have asked me where I bought this beautiful and delicate band, and I happily referred Fascinating Diamonds. I'm ordering another one for my dad so he can gift my mother on their next anniversary.

Inside Diameter		Inside Circumference		Sizes
MM	Inches	MM	Inches	British & Australian	US & Canada	French & Russian	German	Japanese	Swiss
9.91	0.390	31.13	1.22	-	0000	-	-	-	-
10.72	0.442	33.68	1.39	-	00	-	-	-	-
11.53	0.454	36.22	1.43	-	0	-	-	-	-
11.95	0.474	37.54	1.49	A	1/2	-	-	-	-
12.18	0.482	38.26	1.51	A 1/2	3/4	-	-	-	-
12.37	0.487	38.86	1.53	B	1	-	-	1	-
12.60	0.496	39.58	1.56	B 1/2	1 1/4	-	-	-	-
12.78	0.503	40.15	1.58	C	1 1/2	-	-	-	-
13.00	0.512	40.84	1.61	C 1/2	1 3/4	-	-	-	-
13.21	0.520	41.50	1.63	D	2	41 1/2	13 1/2	2	1 1/2
13.41	0.528	42.13	1.66	D 1/2	2 1/4	-	-	-	-
13.61	0.536	42.76	1.68	E	2 1/2	42 3/4	13 3/4	3	2 3/4
13.83	0.544	43.45	1.71	E 1/2	2 3/4	-	-	-	-
14.05	0.553	44.14	1.74	F	3	44	14	4	4
14.15	0.557	44.45	1.75	F 1/2	3 1/8	-	-	-	-
14.25	0.561	44.77	1.76	F 3/4	3 1/4	-	-	-	-
14.36	0.565	45.11	1.77	G	3 3/8	45 1/4	-	5	5 1/4
14.45	0.569	45.40	1.79	G 1/4	3 1/2	-	14 1/2	-	-
14.56	0.573	45.74	1.80	G 1/2	3 5/8	-	-	6	-
14.65	0.577	46.02	1.81	H	3 3/4	46 1/2	-	-	6 1/2
14.86	0.585	46.68	1.84	H 1/2	4	-	15	7	-
15.04	0.592	47.25	1.86	I	4 1/4	47 3/4	-	-	7 3/4
15.27	0.601	47.97	1.89	I 1/2	4 1/2	-	15 1/4	8	-
15.40	0.606	48.38	1.90	J	4 5/8	49	15 1/2	-	9
15.53	0.611	48.79	1.92	J 1/4	4 3/4	-	-	-	-
15.70	0.618	49.32	1.94	J 1/2	5	-	15 3/4	9	-
15.80	0.622	49.64	1.95	K	5 1/8	50	-	-	10
15.90	0.626	49.95	1.97	K 1/4	5 1/4	-	-	-	-
16.00	0.630	50.27	1.98	K 1/2	5 3/8	-	-	10	-
16.10	0.634	50.58	1.99	L	5 1/2	51 3/4	16	-	11 3/4
16.30	0.642	51.21	2.02	L 1/4	5 3/4	-	-	-	-
16.41	0.646	51.55	2.03	L 1/2	5 7/8	-	-	-	-
16.51	0.650	51.87	2.04	M	6	52 3/4	16 1/2	12	12 3/4
16.71	0.658	52.50	2.07	M 1/2	6 1/4	-	-	-	-
16.92	0.666	53.16	2.09	N	6 1/2	54	17	13	14
17.13	0.674	53.82	2.12	N 1/2	6 3/4	-	-	-	-
17.35	0.683	54.51	2.15	O	7	55 1/4	17 1/4	14	15 1/4
17.45	0.687	54.82	2.16	O 1/2	7 1/4	-	-	-	-
17.75	0.699	55.76	2.20	P	7 1/2	56 1/2	17 3/4	15	16 1/2
17.97	0.707	56.45	2.22	P 1/2	7 3/4	-	-	-	-
18.19	0.716	57.15	2.25	Q	8	57 3/4	18	16	17 3/4
18.35	0.722	57.65	2.27	Q 1/2	8 1/4	-	-	-	-
18.53	0.729	58.21	2.29	Q 3/4	8 1/2	-	18 1/2	17	-
18.61	0.733	58.47	2.30	R	8 5/8	59	-	-	19
18.69	0.736	58.72	2.31	R 1/4	8 3/4	-	-	-	-
18.80	0.740	59.06	2.32	R 1/2	8 7/8	-	-	-	-
18.89	0.748	59.34	2.35	R 3/4	9	-	19	18	-
19.10	0.752	60.00	2.36	S	9 1/8	60 1/4	-	-	20 1/4
19.22	0.757	60.38	2.38	S 1/4	9 1/4	-	-	-	-
19.31	0.760	60.66	2.39	S 1/2	9 3/8	-	-	-	-
19.41	0.764	60.98	2.40	S 3/4	9 1/2	-	19 1/2	19	-
19.51	0.768	61.29	2.41	T	9 5/8	61 1/2	-	-	21 1/2
19.62	0.772	61.64	2.43	T 1/4	9 3/4	-	-	-	-
19.84	0.781	62.33	2.45	T 1/2	10	-	20	20	-
20.02	0.788	62.89	2.48	U	10 1/4	62 3/4	-	21	22 3/4
20.20	0.797	63.46	2.50	U 1/2	10 1/2	-	20 1/4	22	-
20.32	0.800	63.84	2.51	V	10 5/8	63	-	-	23 3/4
20.44	0.805	64.21	2.53	V 1/4	10 3/4	-	-	-	-
20.68	0.814	64.97	2.56	V 1/2	11	-	20 3/4	23	-
20.76	0.817	65.22	2.57	W	11 1/8	65	-	-	25
20.85	0.821	65.50	2.58	W 1/4	11 1/4	-	-	-	-
20.94	0.824	65.78	2.59	W 1/2	11 3/8	-	-	-	-
21.08	0.830	66.22	2.61	W 3/4	11 1/2	-	21	24	-
21.18	0.834	66.54	2.62	X	11 5/8	66 1/4	-	-	26 1/4
21.24	0.836	66.73	2.63	X 1/4	11 3/4	-	-	-	-
21.30	0.839	66.92	2.64	X 1/2	11 7/8	-	-	-	-
21.49	0.846	67.51	2.66	Y	12	67 1/2	21 1/4	25	27 1/2
21.69	0.854	68.14	2.68	Y 1/2	12 1/4	-	-	-	-
21.89	0.862	68.77	2.71	Z	12 1/2	68 3/4	21 3/4	26	28 3/4
22.10	0.870	69.43	2.73	Z +1/2	12 3/4	-	-	-	-
22.33	0.879	70.15	2.76	Z+1	13	-	22	27	-
22.60	0.890	71.00	2.80	Z+1.5	13.5	-	-	-	-
22.69	0.893	71.28	2.81	Z+2	-	-	-	-	-
22.92	0.902	72.00	2.83	Z+2.5	-	-	-	-	-
23.06	0.908	72.45	2.85	Z+3	-	-	-	-	-
23.24	0.915	73.01	2.87	Z+3.5	-	-	-	-	-
23.47	0.924	73.73	2.90	Z+4	-	-	-	-	-
23.55	0.927	73.98	2.91	Z+4.5	-	-	-	-	-
23.87	0.940	74.99	2.95	Z+5	-	-	-	-	-
24.27	0.956	76.25	3.00	Z+6	-	-	-	-	-

3 Carat Princess Cut Diamond Eternity Ring

Ring Setting - FDEWB8675-3.00 CT

Diamond

New York Store

Mini Buying Guide: 3 Carat Princess Cut Diamond Eternity Ring

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FAQs for 3 Carat Princess Cut Diamond Eternity Ring

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What accent stone options are available for the 3 Carat Princess Diamond Full Eternity Ring?

What carat options are available for the Elegant 3 Ct Princess Cut Eternity Diamond Band?

What are the color and clarity grades for the Stackable 3 Ct Princess Diamond Eternity Ring?

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Can the 3 Carat Princess Cut Diamond Eternity Ring be worn as a wedding or anniversary band?

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Helpful and wonderful collection

Exactly as pictured!

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