Forged from premium 316L stainless steel. Will never fade, rust, or discolour you skin. Hypoallergenic, making it ideal for sensitive skin. 100% water-proof, sweat-proof and ocean-proof. Designed to be worn everyday without worry.

USA: 6-10 Business Days Europe: 5-12 Business Days Australia: 7-12 Business Days Canada: 7-12 Business Days Other: 7-15 Business Days

Black Marrow

$40

$57

Made from stainless steel. Black Marrow is built from skeletal segments and anchored by a single dark bead pulsing with quiet weight. It feels like a remnant from something buried deep, an artifact forged to carry strength through stillness. Worn tight to the skin, it channels the energy of bone-deep resolve.

Size:

7"-9" (18cm-23cm)

Variant

Water-proof, Ocean-proof

Lifetime Guarantee

Easy 30-Day Returns

Free Worldwide Shipping

All orders come with gift a free Dethro gift box and bag.

1.Use a ruler to measure the inner diameter of a ring that fits your desired finger (in mm).

2.Compare the measurement to the below chart.

3.Round up if you are in between two sizes.

Inside Diameter (mm)	US & Canada	UK, Europe & Australia
14.1	3	F
14.3	3.25	F½
14.5	3.5	G
14.7	3.75	G½
14.9	4	H
15.1	4.25	H½
15.3	4.5	I
15.5	4.75	J
15.7	5	J½
15.9	5.25	K
16.1	5.5	K½
16.3	5.75	L
16.5	6	L½
16.7	6.25	M
16.9	6.5	M½
17.1	6.75	N
17.3	7	N½
17.5	7.25	O
17.7	7.5	O½
17.9	7.75	P
18.1	8	P½
18.3	8.25	Q
18.5	8.5	Q½
18.8	8.75	R
19	9	R½
19.2	9.25	S
19.4	9.5	S½
19.6	9.75	T
19.8	10	T½
20	10.25	U
20.2	10.5	U½
20.4	10.75	V
20.6	11	V½
20.8	11.25	W
21	11.5	W½
21.2	11.75	X
21.4	12	X½
21.6	12.25	Y
21.8	12.5	Y½
22	12.75	Z
22.2	13	Z½
22.4	13.25	Z+1
22.6	13.5	-

Material & Quality

Forged from premium 316L stainless steel.
Will never fade, rust, or discolour you skin.
Hypoallergenic, making it ideal for sensitive skin.
100% water-proof, sweat-proof and ocean-proof.
Designed to be worn everyday without worry.

Shipping Times

USA: 6-10 Business Days
Europe: 5-12 Business Days
Australia: 7-12 Business Days
Canada: 7-12 Business Days
Other: 7-15 Business Days

Questions?

Contact us at info@dethrodesigns.com

Your Daily Armor

Strong, durable, and made to last. Our stainless steel pieces are made for daily wear, resistant to sweat, water, and time. This is the kind of jewelry you never need to take off.

designed with Purpose

Dethro pieces aren’t made to blend in. Every piece we make is meant to say something. Not just to look good, but to carry weight, presence, and purpose.

Designed & Forged by Dethro Designs Inc.

About us

Black Marrow

Black Marrow

Ring Sizing Guide