Chalfen of London – Bespoke Jewellery

British Fine Jewellers & Diamond Experts

Custom engagement rings and wedding rings crafted with your unique, personal touch in mind. Book an appointment to meet an accredited expert.

Bespoke Engagement Rings

Schedule Consultation

Our Process

Book a consultation

Choose your Diamonds & Stones

Finalise your design

Commission our workshop & craftsmen

Order & Delivery

Schedule Consultation

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Feb 7

Open

Chasing away the winter blues with this stunning 56.28cts blue topaz cocktail ring

#cocktailring #bespokejewellery #topaz #topazring #finejewellery #bluetopazjewelry

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Feb 5

Open

Which do you prefer: white gold or yellow gold?

#diamondstuds #diamondearrings #yellowgold #whitegold #diamonds

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Feb 2

Open

Perfect pairing • a green sapphire and diamond wedding band to match an oval diamond and pear sapphire engagement ring

#bespokeengagementring #greensapphire #weddingband #bespokejewellery #greensapphirering #sapphireanddiamond

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Jan 31

Open

A classic diamond engagement ring 💎

#solitairediamond #engagementring #diamondring #finejewellery #diamonds

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Jan 29

Open

Timeless layers from our #EchoCollection

#goldnecklaces #finejewellery #layerednecklaces #diamondnecklace

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Jan 26

Open

Add to your ring stack • a chevron diamond ring incorporating our client's heirloom stones 💎

#chevronring #diamondring #fittedweddingring #ringstack #diamondweddingring

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Jan 24

Open

Stunning sapphire • a pear-shape diamond and sapphire pendant

#sapphire #sapphirejewellery #diamond #diamondpendant #finejewellery

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Jan 22

Open

Ring in the New Year 💍 our #MCollection rings feature either a princess cut or pear shaped diamond and can be worn together or apart depending on how you want to style them

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#princessdiamond #peardiamond #princesscut #pearcut #diamondring #diamondstackingring #stackingring #goldring #finejewelry

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Jan 19

Open

Adding some colour to this custom engagement ring with a yellow sapphire surrounded by diamonds

#yellowsapphire #sapphireengagementring #bespokeengagementring #engagementring #finejewellery

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Jan 17

Open

A delicate tanzanite and diamond bangle handmade in 18ct gold

#bespokejewellery #finejewellery #bangle #tanzanitejewellery #tanzanitebracelet

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Jan 15

Open

A look back at our favourite #bespokerings from 2023 💍 which is your favourite?

#bespokejewellery #finejewellery #chalfenoflondon #customjewellery #bespokeengagementring

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Dec 20

Open

A pairing of platinum and diamonds

#diamondengagementring #platinumring #diamondwedddingband #cushiondiamond

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Dec 18

Open

Simple or stacked 💎 an 18ct yellow gold eternity ring with baguette diamonds

#baguettediamond #eternityring #diamondeternityring #stackingring

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Dec 15

Open

Together 💎

#weddingset #diamondrings #eternityring #diamondweddingring #emeraldcutdiamond

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Dec 13

Open

A 1.60cts emerald cut diamond sparkling in the sun

#emeraldcutdiamond #engagementring #engagementringinspo #emeralddiamondring

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Dec 11

Open

Dainty diamond drops ✨ our Echo Collection necklace features sparkling diamonds suspended from a golden chain. The perfect piece to wear on its own or layered!

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#EchoCollection #gold #finejewellery #diamonddrop #diamondnecklace #layeringnecklace #goldnecklace #diamonddropnecklace #london #madeinlondon

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Dec 8

Open

Going for maximum sparkle

#engagementring #ovaldiamond #ovaldiamondengagementring #diamonds

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Dec 6

Open

Trilogy

#ovaldiamonds #ovaldiamondring #diamondengagementring #engagementringinspo

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Dec 4

Open

A trio of oval diamonds

#ovaldiamondring #ovaldiamonds #trilogyring #engagementringinspo

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Dec 1

Open

Our dream stack featuring a 1.10cts pear shape diamond layered with a diamond eternity band and yellow gold wedding band

#engagementring #peardiamond #engagementringinspo #engagementringgoals

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Company Ethos

Our Promise to You

At Chalfen, we place significant value on revolutionising the diamond industry. We remove the reliance upon certification and bring diamonds back to life through a captivating story using our unparalleled knowledge of diamonds and jewellery manufacturing. Our guarantee to our retailers over the years has been to provide the best-possible service and training, but also, most importantly, a promise to supply the best value diamonds at every level… This promise now extends directly to you for a bespoke design service unlike any other.

We aim to provide the highest quality products and service within the market, through an innovative and holistic approach creating a unrivalled bespoke end product. That’s why our motto is “A Promise, Set in Stone.”

Find out more

START LIVE CHAT

Have a question or want some more information about our designs? Chat with one of our experts now.

Talk to our team instantly!

SCHEDULE CONSULTATION

Talk to one of our friendly team over video or chat to discuss your requirements.

Schedule Consultation

Ring Dia ⌀ (Inside)		Ring Circumference (Inside)		‹ International Standard Sizes ›
MM	Inches	MM	Inches	UK / AU	USA / CA	Europe
9.9	0.390	31.1	1.22	·	0000	·
10.7	0.442	33.7	1.39	·	00	·
11.5	0.454	36.2	1.43	·	0	·
12.0	0.470	37.5	1.50	A	1/2	·
12.2	0.479	38.3	1.51	A 1/2	3/4	·
12.4	0.487	38.9	1.53	B	1	·
12.6	0.506	39.6	1.56	B 1/2	1 1/4	·
12.8	0.503	40.2	1.58	C	1 1/2	·
13.0	0.511	40.8	1.61	C 1/2	1 3/4	·
13.2	0.520	41.5	1.63	D	2	41 1/2
13.4	0.528	42.1	1.66	D 1/2	2 1/4	·
13.6	0.536	42.8	1.68	E	2 1/2	42 3/4
13.8	0.544	43.5	1.71	E 1/2	2 3/4	·
14.0	0.553	44.1	1.74	F	3	44
14.2	0.557	44.5	1.75	F 1/2	3 1/8	·
14.3	0.561	44.8	1.76	F 3/4	3 1/4	·
14.4	0.565	45.1	1.77	G	3 3/8	45 1/4
14.5	0.568	45.4	1.79	G 1/4	3 1/2	·
14.6	0.573	45.7	1.80	G 1/2	3 5/8	·
14.7	0.576	46.0	1.81	H	3 3/4	46 1/2
14.9	0.585	46.7	1.84	H 1/2	4	·
15.0	0.592	47.3	1.86	I	4 1/4	47 3/4
15.3	0.601	48.0	1.89	I 1/2	4 1/2	·
15.4	0.606	48.4	1.90	J	4 5/8	50
15.5	0.611	48.8	1.92	J 1/4	4 3/4	·
15.7	0.618	50.3	1.94	J 1/2	5	·
15.8	0.622	50.6	1.95	K	5 1/8	50
15.9	0.625	50.0	1.97	K 1/4	5 1/4	·
16.0	0.630	50.3	1.98	K 1/2	5 3/8	·
16.1	0.634	50.6	1.99	L	5 1/2	51 3/4
16.3	0.642	51.2	2.02	L 1/4	5 3/4	·
16.4	0.646	51.6	2.03	L 1/2	5 7/8	·
16.5	0.650	51.9	2.04	M	6	52 3/4
16.7	0.658	52.5	2.07	M 1/2	6 1/4	·
16.9	0.666	53.2	2.09	N	6 1/2	54
17.1	0.674	53.8	2.12	N 1/2	6 3/4	·
17.4	0.683	54.5	2.15	O	7	55 1/4
17.5	0.687	54.8	2.16	O 1/2	7 1/4	·
17.8	0.698	55.8	2.20	P	7 1/2	56 1/2
18.0	0.707	56.5	2.22	P 1/2	7 3/4	·
18.2	0.716	57.1	2.25	Q	8	57 3/4
18.4	0.722	57.7	2.27	Q 1/2	8 1/4	·
18.5	0.729	58.2	2.29	Q 3/4	8 1/2	·
18.6	0.733	58.5	2.30	R	8 5/8	59
18.7	0.736	58.7	2.31	R 1/4	8 3/4	·
18.8	0.740	59.1	2.32	R 1/2	8 7/8	·
18.9	0.743	59.3	2.35	R 3/4	9	·
19.1	0.752	60.0	2.36	S	9 1/8	60 1/4
19.2	0.757	60.4	2.38	S 1/4	9 1/4	·
19.3	0.760	60.7	2.39	S 1/2	9 3/8	·
19.4	0.764	61.0	2.40	S 3/4	9 1/2	·
19.5	0.768	61.3	2.41	T	9 5/8	61 1/2
19.6	0.772	61.6	2.43	T 1/4	9 3/4	·
19.8	0.781	62.3	2.45	T 1/2	10	·
20.0	0.780	62.9	2.48	U	10 1/4	62 3/4
20.2	0.795	63.5	2.50	U 1/2	10 1/2	·
20.3	0.800	63.8	2.51	V	10 5/8	63
20.4	0.805	64.2	2.53	V 1/4	10 3/4	·
20.7	0.814	65.0	2.56	V 1/2	11	·
20.8	0.817	65.2	2.57	W	11 1/8	65
20.9	0.821	65.5	2.58	W 1/4	11 1/4	·
20.9	0.824	65.8	2.59	W 1/2	11 3/8	·
21.0	0.830	66.2	2.61	W 3/4	11 1/2	·
21.2	0.834	66.5	2.62	X	11 5/8	66 1/4
21.2	0.836	66.7	2.63	X 1/4	11 3/4	·
21.3	0.838	66.9	2.64	X 1/2	11 7/8	·
21.5	0.846	67.5	2.66	Y	12	67 1/2
21.7	0.854	68.1	2.68	Y 1/2	12 1/4	·
21.9	0.861	68.8	2.71	Z	12 1/2	68 3/4
22.1	0.870	69.4	2.73	Z +1/2	12 3/4	·
22.3	0.879	70.2	2.76	Z+1	13	·
22.6	0.890	71.0	2.80	Z+1.5	13.5	·
22.7	0.893	71.3	2.81	Z+2	·	·
22.9	0.902	72.0	2.83	Z+2.5	·	·
23.0	0.908	72.5	2.85	Z+3	·	·
23.3	0.915	73.0	2.87	Z+3.5	·	·
23.5	0.924	73.7	2.90	Z+4	·	·
23.6	0.927	74.0	2.91	Z+4.5	·	·
23.9	0.940	75.0	2.95	Z+5	·	·
24.3	0.955	76.2	3.00	Z+6	·	·

British Fine Jewellers & Diamond Experts

Our Process

Book a consultation

Choose your Diamonds & Stones

Finalise your design

Commission our workshop & craftsmen

Order & Delivery

Company Ethos

Our Promise to You

START LIVE CHAT

SCHEDULE CONSULTATION

About Chalfen of London

Customer Service

Get in touch

Bespoke Services

About us

Find your ring size with our International Conversion Chart