18ct ceylon sapphire & diamond ring

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DETAILS

This bespoke ring is custom made and the above price is based on a Ceylon sapphire = 2.60cts | Total diamond weight = 0.49cts.
Price may vary depending on stone selection and availability.
Our small diamonds are premium cut, F/G colour and VS clarity.
All precious gems are selected for their quality, colour and cut for Jan Logan designs.
The metal used is 18ct white gold palladium, the highest quality white gold metal.
This piece was designed and produced by Jan Logan.

PRODUCTION

Most of our pieces are in stock and ready to dispatch with complimentary international express shipping on all orders. If an item is unavailable, our Customer Service Team will confirm production details upon purchase.

Please note, the made-to-order time frame is measured in business days and may vary by piece. Production time excludes processing and shipping.

MATERIALS & CARE

Diamonds: Responsibly sourced through family-owned suppliers and compliant with the Kimberley Process. Larger diamonds include GIA certification. To care, clean with soapy water and store separately.

Coloured Gemstones: Natural gemstones from sustainable sources, where slight colour variations enhance uniqueness. To care, wipe gently and avoid chemicals.

Gold & Silver: Crafted with responsibly sourced metals certified by the Responsible Jewellery Council. To care for white gold, re-plate every 18-24 months. To care for sterling silver, use a polishing cloth.

Rings: Store separately to prevent scratches, avoid water, and check for loose stones.

COMPLIMENTARY SERVICES

Gift wrapping is elegantly presented in Jan Logan’s signature brown box with a gift bag and personalised note.
Six-month warranty on all purchases. Please see our Warranty & Repairs page for further information.

RING SIZE GUIDE

1. INTERNATIONAL RING SIZE CHART

CIRCUM (MM)	DIAM (MM)	AUS, UK EUR	USA	ASIA	SWISS
44.2	14.1	F	3	4	4
44.8	14.3	F½		5	5¼
45.5	14.5	G	3½
46.1	14.7	G½		6	6½
46.8	14.9	H	4	7
47.4	15.1	H½			¾
48.0	15.3	I	4½	8
48.7	15.5	J			9
49.3	15.7	J½	5	9
50.0	15.9	K			10
50.6	16.1	K½	5½	10
51.2	16.3	L			11¾
51.9	16.5	L½	6	11	12¾
52.5	16.7	M		12
53.1	16.9	M½	6½	13	14
53.8	17.1	N
54.4	17.3	N½	7	14	15½
55.1	17.5	O
55.7	17.7	O½	7½	15	16½
56.3	17.9	P
57.0	18.1	P½	8	16	17¾
57.6	18.3	Q
58.3	18.5	Q½	8½	17
58.9	18.8	R			19
59.5	19.0	R½	9	18
60.2	19.2	S			20¼
60.8	19.4	S½	9½	19
61.4	19.6	T			21½
62.1	19.8	T½	10	20
62.7	20.0	U		21
63.4	20.2	U½	10½	22	22¾
64.0	20.4	V
64.6	20.6	V½	11	23
65.3	20.8	W			25
65.9	21.0	W½	11½	24
66.6	21.2	X
67.2	21.4	X½	12	25	27½
67.8	21.6	Y
68.5	21.8	Z	12½	26	28¾
69.1	22.0	Z½
69.7	22.2	Z+1	13	27
70.4	22.4
71.0	22.6			13

2. CHECK THE SIZE OF YOUR EXISTING RING

Print the ring size guide and follow instructions to find out what size your existing ring is:

RING SIZE GUIDE - CLICK TO PRINT

18ct ceylon sapphire & diamond ring