René Boivin marquise diamond coronet cluster ring. Hatton Garden1

René Boivin marquise diamond coronet cluster ring. Hatton Garden2

René Boivin marquise diamond coronet cluster ring. Hatton Garden3

René Boivin marquise diamond coronet cluster ring. Hatton Garden4

René Boivin marquise diamond coronet cluster ring. Hatton Garden5

René Boivin marquise diamond coronet cluster ring. Hatton Garden6

René Boivin marquise diamond coronet cluster ring. Hatton GardenRené Boivin marquise diamond coronet cluster ring. Hatton Garden7

René Boivin marquise diamond coronet cluster ring. Hatton Garden8

René Boivin marquise diamond coronet cluster ring, French, circa 1920.

Platinum, Diamond

£26,500

coronet ring. Set to centre with a marquise shape diamond in an setting, with an approximate weight of 1.00 , encircled by twenty two round in open back grain settings, with a combined weight of 0.22 , flanked further by three round eight cut diamonds in open back grain settings, six in total, with a combined weight of 0.06 carats. The total approximate diamond weight is 1.28 carats, to an impressive design featuring polished borders, an intricately pierced and fancy open backholing, flanked by slightly raised that flow through to a concave . , makers mark 'RB' for René Boivin, French, 1920, accompanied by certificate of authenticity from Rene Boivin #202504PEY.

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Reference Number 28476

Maker René Boivin

Origin French

Ring size: M 1/2

Size Guide

The majority of items can be re-sized free of charge.

Period Belle Époque

TOTAL / RING Weight 2.68 grams

Metal Platinum

Gemstone Diamond, Marquise shape, approximately 1ct 28 x Diamonds, Eight Cut, approximately 0.28ct total

Chairman's Notes

Our in-house gemmologists have graded the centre diamond, setting permitting, to be approximately H colour, VVS2 – VS1 clarity.

Delivery & Returns

Inside diameter (mm)	USA	UK	China India	European
11.63	0
11.84	¼
12.04	½	A
12.24	¾	A½
12.45	1	B	1
12.65	1¼	B½
12.85	1½	C
13.06	1¾	C½		41
13.26	2	D	2	42
13.46	2¼	D½
13.67	2½	E	3	43
13.87	2¾	E½
14.07	3	F	4	44
14.27	3¼	F½	5	45
14.48	3½	G
14.68	3¾	G½	6	46
		H		47
14.88	4	H½	7
15.09	4¼	I		48
15.29	4½	I½	8
15.49	4¾	J		49
15.7	5	J½	9	50
15.9	5¼	K		51
16.1	5½	K½	10
16.31	5¾	L		52
16.51	6	L½	11
16.71	6¼	M	12	53
16.92	6½	M½	13
17.12	6¾	N		54
17.32	7	O	14	55
17.53	7¼	O½		56
17.73	7½	P	15
17.93	7¾	P½		57
18.14	8	Q	16
18.34	8¼	Q½		58
18.54	8½	R	17	59
18.75	8¾	R½
18.95	9	S	18	60
19.15	9¼
19.35	9½	S½	19	61
19.56	9¾	T
19.76	10	T½	20	62
19.96	10¼	U	21
20.17	10½	U½	22	63
20.37	10¾	V		64
20.57	11	V½	23
20.78	11¼	W		65
20.98	11½	W½	24
21.18	11¾	X		66
21.39	12	Y	25	67
21.59	12¼	Y½		68
21.79	12½	Z	26
22	12¾	Z½		69
22.2	13		27
22.4	13¼
22.61	13½
22.81	13¾
23.01	14
23.22	14¼
23.42	14½
23.62	14¾
23.83	15
24.03	15¼
24.23	15½
24.43	15¾
24.64	16

Next day delivery Tuesday to Saturday before 1pm – order by 4:30pm	Complimentary
Nominated day delivery Tuesday to Saturday	Complimentary
Same Day Delivery within London Monday to Saturday – order by 3:30pm	£100

USA 7-10 business days - complimentary fully insured shipping	Complimentary
Europe and Rest of World 7-10 business days - complimentary fully insured shipping	Complimentary

René Boivin marquise diamond coronet cluster ring, French, circa 1920.

Platinum, Diamond

£26,500

About the Gemstone

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