Old mine diamond openwork brooch, circa 1905.1

Old mine diamond openwork brooch, circa 1905.2

Old mine diamond openwork brooch, circa 1905.3

Old mine diamond openwork brooch, circa 1905.4

Old mine diamond openwork brooch, circa 1905.

Yellow Gold & Platinum, Diamond

£22,500

openwork . Set to centre with a shape old mine diamond in an setting with an approximate weight of 1.90 , further set with ten cushion shape old mine in open back setting with a combined weight of 2.10 carats and decorated with fifteen round diamonds in open back grain settings with a combined weight of 0.20 carats. The total approximate diamond weight is 4.20 carats, to an ornate openwork brooch featuring edging, a linear and fancy shape open backholing, fitted to reverse with a secure pin clasp. 15 carat and , french import marks, 1905.

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Reference Number 29529

Period 1910's

Metal Yellow Gold & Platinum

Gemstone Diamond, Old Mine, approximately 1.9ct 10 x Diamonds, Old Mine, approximately 2.1ct total 15 x Diamonds, Rose Cut, approximately 0.2ct total

Condition

This brooch is in good condition commensurate with its age.

Chairman's Notes

The central diamond has been assessed by our in-house gemmologists as being approximately J-K colour, SI clarity, settings permitting.

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

Old mine diamond openwork brooch, circa 1905.

Yellow Gold & Platinum, Diamond

£22,500

About the Gemstone

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