Marrow Fine wave stacking rings in an open burgundy velvet ring box: the White Diamond Estelle Wave Band, White Diamond Lola Bombe Wave Band and Everyday Wave Bands in 3mm and 1.5mm, with the Lisse Diamond Cushion Charm and Lisse Seven Stone Diamond Necklace draped below

Find Your Perfect Fit

Made to be worn forever, sized to feel just right.

A close-up of a gold ring with a marquise-shaped clear gemstone and smaller surrounding stones, photographed on a pale blue textured background.

Ring Sizing Guide

Download our Printable Ring Sizer

Find your perfect fit with our printable ring sizer. Designed for your convenience, this tool allows you to find your ideal size from home. Watch the video below for instructions on how to find your size.

Pro tips:

• For bands with a thicker width (4-6mm), we recommend adjusting the size to a half-size up.

• Measure in a warm, comfortable environment: room temperature is ideal as measuring when your fingers are cold or too hot can cause swelling or shrinkage.

• Your dominant hand’s fingers might be slightly larger, so make sure to size the finger on the hand where you will be wearing the ring.

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Ring sizer tutorial video with subtitles showing how to measure your ring size at home

Not in a hurry?

Shop our Ring Sizer Tool

Shipped directly to your door, so you can measure your size with ease and confidence.

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International Ring Size Conversion Chart
Inside Circumference (IN)	Inside Circumference (MM)	US, Canada, Mexico	UK, Australia, Ireland, New Zealand, South Africa	France	Germany, Russia, Ukraine, Asia	India, China, Japan, South America, Turkey, Israel	Italy, Spain, Netherlands, Switzerland
1.74	44.2	3	F	44	14	4	4
1.77	44.8	3.25	F 1/2	45	14 1/4	---	4 5/8
1.79	45.5	3.5	G	45.5	14 1/2	5	5 1/4
1.82	46.1	3.75	G 1/2	46	14 3/4	6	5 7/8
1.84	46.8	4	H	47	15	7	6 1/2
1.87	47.4	4.25	H 1/2	47.5	---	---	7 1/8
1.89	48	4.5	I	48	15 1/4	8	7 3/4
1.92	48.7	4.75	J	48.5	15 1/2	---	8 3/8
1.94	49.3	5	J 1/2	49	15 3/4	9	9
1.97	50	5.25	K	50	16	---	9 5/8
1.99	50.6	5.5	K 1/2	50.5	16 1/4	10	10 1/4
2.02	51.2	5.75	L	51	---	11	10 7/8
2.04	51.9	6	L 1/2	52	16 1/2	12	11 1/2
2.07	52.5	6.25	M	52.5	16 3/4	---	12 1/8
2.09	53.1	6.5	M 1/2	53	17	13	12 3/4
2.12	53.8	6.75	N	54	---	---	13 3/8
2.14	54.4	7	N 1/2	54.5	17 1/4	14	14
2.17	55.1	7.25	O	55	17 1/2	---	14 5/8
2.19	55.7	7.5	O 1/2	56	17 3/4	15	15 1/4
2.22	56.3	7.75	P	56.5	18	---	15 7/8
2.24	57	8	P 1/2	57	---	16	16 1/2
2.27	57.6	8.25	Q	58	18 1/4	---	17 1/8
2.29	58.3	8.5	Q 1/2	58.5	18 1/2	17	17 3/4
2.32	58.9	8.75	R	59	18 3/4	---	18 3/8
2.34	59.5	9	R 1/2	60	19	18	19
2.37	60.2	9.25	S	60.5	19 1/4	---	19 5/8
2.39	60.8	9.5	S 1/2	61	19 1/2	19	20 1/4
2.42	61.4	9.75	T	61.5	---	---	20 7/8
2.44	62.1	10	T 1/2	62	19 3/4	20	21 1/2
2.47	62.7	10.25	U	63	20	21	22 1/8
2.49	63.4	10.5	U 1/2	63.5	---	22	22 3/4
2.52	64	10.75	V	64	20 1/2	---	23 3/8
2.54	64.6	11	V 1/2	65	20 3/4	23	24
2.57	65.3	11.25	W	65.5	---	---	24 5/8
2.59	65.9	11.5	W 1/2	66	21	24	25 1/4
2.62	66.6	11.75	X	67	21 1/4	---	25 7/8
2.65	67.2	12	X 1/2	67.5	21 1/2	25	26 1/2
2.68	68.1	12.25	Y	68	---	---	27 1/8
2.71	68.5	12.5	Z	69	21 3/4	26	27 3/4
2.72	69.1	12.75	Z 1/2	69.5	---	---	28 3/8
2.75	69.7	13	---	70	22	27	29

Six tennis bracelets draped over a round beige stone, set against a solid dark reddish-brown background.

Bracelet Sizing Guide

Finding Your Perfect Fit

Getting your fit right is simple, and only takes a minute.

Step 1: Measure Your Wrist

Wrap a soft measuring tape snugly around your wrist, just below the wrist bone, with no extra room. This is your true wrist measurement. If you don’t have a tape measure, a strip of paper or piece of string works too—just mark where the ends meet and lay it against a ruler to find your measurement.

Step 2: Find Your Size

Now that you’ve got your exact wrist measurement, use the size chart for your bracelet style to find your perfect size.

If you’re stuck between sizes, we recommend sizing up since a looser bracelet tends to be more comfortable than one that’s too snug.

FIXED LENGTH BRACELET SIZE CHART
Wrist Measurement (in)	Wrist Measurement (mm)	Your Bracelet Size
5"	127 mm	5.5"
5.5"	140 mm	6"
5.75"	146 mm	6.25"
6"	152 mm	6.5"
6.5"	165 mm	7"
7"	178 mm	7.5"
7.5"	191 mm	8"

CUFF SIZING

Large cuff sizing: 60 mm wide, 49.50 mm tall, 172.40 mm inner circumference, 30 mm opening

A note on fit:

If you prefer a bit more movement, size up half a size to a full size for a looser fit. If you’re active, the size the chart recommends is often the better call so nothing catches or snags.

Diamond necklaces draped across a deep burgundy background

Necklace Sizing Guide

Necklace length guide on a model showing chains at 15, 16, 18 and 20 inches

The right length changes how a necklace looks and feels. Here's a quick guide to help you choose the right length and shop with confidence.

15": Choker Fit

Sits right at the base of the neck. It's a snug, close fit that shows off a delicate chain or small pendant, and it works well with open necklines and when your hair is up. This length is very fitted and might not be for everyone.

16": Collarbone

This sits right at the collarbone and is one of the most popular necklace lengths. It’s a great everyday choice and a good base for layering if you’re looking to build a neck stack.

18": Upper Chest

This length falls just below the collarbone and is flattering on everyone. It's our most versatile length: easy to wear with almost any neckline, and it gives pendants and charms a little room to show off.

20": Mid-Chest

Landing a few inches below the collarbone, at about mid-chest, it's perfect for layering over shorter chains, and it looks great with higher necklines like crewnecks and collared shirts.

Measuring at home

Starting with a necklace you already own and love is a great way to find your perfect size. If you don’t have a necklace, try using a string or yarn instead. The only other thing you need to measure is a ruler.

Lay your necklace (or string) in a straight line. If you’re measuring a necklace, keep in mind that the clasp is included in the total length, so you’ll want to measure end to end.
Place the ruler alongside the necklace (or string) to find its length in inches. This is your necklace size.

If the piece you’re eyeing doesn’t come in the length you love, reach out to us! We can work with you to create your perfect everyday necklace.

Still unsure? Book a 1-on-1 appointment with our jewelry experts:

Marrow Fine San Diego Showroom interiors & design details

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Margot Pear Wave Ring and wave ring stack on peach tissue paper

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Marrow Fine Founder & Designer Jillian reaching into a jewelry box

Let's Chat Virtually

Book a phone or video appointment with our team.

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Find Your Perfect Fit

Made to be worn forever, sized to feel just right.

Ring Sizing Guide

Download our Printable Ring Sizer

Pro tips:

Shop our Ring Sizer Tool

Bracelet Sizing Guide

Finding Your Perfect Fit

Step 1: Measure Your Wrist

Step 2: Find Your Size

A note on fit:

Necklace Sizing Guide

15": Choker Fit

16": Collarbone

18": Upper Chest

20": Mid-Chest

Measuring at home

If the piece you’re eyeing doesn’t come in the length you love, reach out to us! We can work with you to create your perfect everyday necklace.

Still unsure? Book a 1-on-1 appointment with our jewelry experts:

Visit IRL

Stop by a Trunk Show

Let's Chat Virtually

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