Engagement Rings

Split Shank Marquise Halo Engagement Ring

12.5X6.5 · Style 51289-E-12.5X6.5

$5,955.87 Updates with your choices

Certified Diamonds
Made to order

Select this setting

Call Us

Send it to someone special

Book an appointment

Pick a day and time that suits you. It only takes a minute.

Coming in to see this piece? Mention style 51289-E-12.5X6.5 when you book.

Loading the calendar…

Calendar not showing? Book on our booking page (opens in a new tab)

Stone details

1 × Marquise Diamond	1.5 ct	12 x 6 mm
50 × Round Diamond	0.015 ct	1.5 x 1.5 mm

Specifications

Style number: 51289-E-12.5X6.5
Collection: Engagement Rings
Carat: 12.5X6.5
Available metals: 10 KT, 14 KT, 18 KT, Silver, Platinum, Palladium, 14 KT Palladium, 18 KT Palladium
Metal colours: White, Yellow, Rose, Silver, Platinum, Palladium

Find your ring size

Measure a ring you own

Place a ring that fits the right finger on the circles below (print at 100%, no scaling) and pick the circle that matches its inside edge. Or measure the inside diameter in millimetres and find it in the chart.

Measure your finger

Wrap a strip of paper around the base of your finger, mark where it overlaps and measure the length in millimetres: that is the circumference. Measure at the end of the day, when fingers are largest.

US size	Diameter	Circumference
3	14.1 mm	44.2 mm
3.5	14.5 mm	45.5 mm
4	14.9 mm	46.8 mm
4.5	15.3 mm	48.0 mm
5	15.7 mm	49.3 mm
5.5	16.1 mm	50.6 mm
6	16.5 mm	51.9 mm
6.5	16.9 mm	53.1 mm
7	17.3 mm	54.4 mm
7.5	17.7 mm	55.7 mm
8	18.1 mm	57.0 mm
8.5	18.5 mm	58.2 mm
9	18.9 mm	59.5 mm
9.5	19.4 mm	60.8 mm
10	19.8 mm	62.1 mm
10.5	20.2 mm	63.3 mm
11	20.6 mm	64.6 mm
11.5	21.0 mm	65.9 mm
12	21.4 mm	67.2 mm
12.5	21.8 mm	68.5 mm
13	22.2 mm	69.7 mm