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18K yellow gold solitaire ring featuring a round lab-grown diamond center stone with pavé channel-set side diamonds and a tapered shank, designed as a dainty promise or engagement ring.
18K gold channel-set solitaire rings with round lab-grown diamonds, shown side by side for size comparison between 0.10 ct and 0.20 ct center stones. Perfect as promise rings, engagement rings, anniversary gifts, or meaningful stacking rings for her.
Close-up of two 18K gold half eternity solitaire rings with round lab-grown diamonds held between fingers, showing the difference in center stone sizes and the channel-set pavé detailing.
18K gold half eternity solitaire rings with round lab-grown diamonds and channel-set pavé bands, shown together for size reference and styling inspiration.
Side view of two 18K gold solitaire rings with round lab-grown diamonds in four-prong settings, tapered shanks and half eternity pavé band detailing.
8K gold half eternity rings with round lab-grown diamonds, labeled for size comparison between 2.9mm (10 points) and 3.8mm (20 points) center stones.
18K gold half eternity solitaire ring with a round lab-grown diamond, showing front, side, and top angles to highlight the tapered shank and channel-set pavé diamond band.
Jewel Frost signature packaging featuring a round light blue leather zip case with gold zipper, black velvet interior, and monogram "JF" branding. Includes a soft-touch envelope and gift-wrapped box, ideal for gifting fine jewelry.

18K Gold Lab Diamond Half Eternity Ring: Channel Set Promise Ring

Sale price$612.00 USD Regular price$1,360.00 USD
55% OFF APPLIED
18K Solid Gold Lab Diamond Appraisal Certificate
18K Gold Primary Color & Center Diamond Size:

18K Gold Primary Color & Center Diamond Size
Ring Size:
Ring Size Guide

Find your US size using the international chart below. Conversions are approximate; available sizes vary by design.

Swipe the chart sideways for all countries and scroll down for more sizes. The US column stays visible.

US / Canada UK / Australia France Japan Italy
3 F 44 4 4
3.5 G 45.5 5 5¼
4 H 47 7 6½
4.5 I 48 8 7¾
5 J½ 49 9 9
5.5 K½ 50.5 10 10¼
6 L½ 52 12 11½
6.5 M½ 53 13 12¾
7 N½ 54.5 14 14
7.5 O½ 56 15 15¼
8 P½ 57 16 16½
8.5 Q½ 58.5 17 17¾
9 R½ 60 18 19
9.5 S½ 61 19 20¼
10 T½ 62 20 21½
10.5 U½ 63.5 22 22¾
11 V½ 65 23 24
11.5 W½ 66 24 25¼
12 X½ 67.5 25 26½
12.5 Z 69 26 27¾
13 — 70 27 29

Missing your size? Please ask us before rounding to another size. Indian, Chinese and Hong Kong sizes are not automatically equivalent to Japanese sizes.

Measurements in mm + US quarter sizes

Diameter = straight across the inside. Circumference = around the inside.

US / Canada Inside diameter
(mm, approx.)		 Inside circumference
(mm)
3 14.1 44.2
3.25 14.3 44.8
3.5 14.5 45.5
3.75 14.7 46.1
4 14.9 46.8
4.25 15.1 47.4
4.5 15.3 48.0
4.75 15.5 48.7
5 15.7 49.3
5.25 15.9 50.0
5.5 16.1 50.6
5.75 16.3 51.2
6 16.5 51.9
6.25 16.7 52.5
6.5 16.9 53.1
6.75 17.1 53.8
7 17.3 54.4
7.25 17.5 55.1
7.5 17.7 55.7
7.75 17.9 56.3
8 18.1 57.0
8.25 18.3 57.6
8.5 18.6 58.3
8.75 18.7 58.9
9 18.9 59.5
9.25 19.2 60.2
9.5 19.4 60.8
9.75 19.5 61.4
10 19.8 62.1
10.25 20.0 62.7
10.5 20.2 63.4
10.75 20.4 64.0
11 20.6 64.6
11.25 20.8 65.3
11.5 21.0 65.9
11.75 21.2 66.6
12 21.4 67.2
How to measure your ring or finger

Use a ring: Measure across the center of a ring that fits the intended finger, inside edge to inside edge. Match the diameter above.

Inside diameter · not to scale

Use paper: Wrap a narrow strip snugly around the finger base, mark the overlap, then measure from the start to the mark in mm. Match the circumference above.

1. Wrap
Snug around the base.
2. Mark
Where the ends meet.
0 Measure in mm
3. Measure
From the start to your mark.

Illustrations are not to scale. Measure at normal room temperature. For the most dependable fit, especially with wide bands or a larger knuckle, use a jeweler's ring sizer.

Between sizes? Email info@jewel-frost.com with your size, country and product link.

Ring Size

This dainty 18K gold ring features a 0.10–0.20 ct round lab-grown diamond set in a delicate channel-set half-eternity band. With its thin, tapered shank and soft sparkle, it’s perfect as a gift for yourself, a minimalist promise ring or thoughtful gift for your wife or partner.

FEATURES
• Gold Kt: 18K Solid Gold
• Diamond Type: Lab Grown Diamond
• Center Diamond CT: 0.10 ct / 0.20 ct
• Total Number of Stones: 19 pcs
• Diamond Cut: Round
• Diamond Clarity: VS+
• Diamond Color: EF+
• Shank Width: 1.5mm
• Setting Type: 4 Prong Setting, Channel Setting
• Comes in Jewel Frost packaging
18K yellow gold solitaire ring featuring a round lab-grown diamond center stone with pavé channel-set side diamonds and a tapered shank, designed as a dainty promise or engagement ring.
18K Gold Lab Diamond Half Eternity Ring: Channel Set Promise Ring Sale price$612.00 USD Regular price$1,360.00 USD

Free Insured Shipping

Complimentary insured delivery, US and international.

30-Day Returns

Free U.S. returns on eligible orders.

Fine Materials

Solid 14K gold with natural or lab-grown diamonds.

Appraisal Included

An appraisal accompanies every diamond order.

One-Year Warranty

Shop with confidence, backed by our warranty.