Ceylon Alexandrite and diamond coronet cluster ring, circa 1915. Hatton Garden1

Ceylon Alexandrite and diamond coronet cluster ring, circa 1915. Hatton Garden2

Ceylon Alexandrite and diamond coronet cluster ring, circa 1915. Hatton Garden3

Ceylon Alexandrite and diamond coronet cluster ring, circa 1915. Hatton Garden4

Ceylon Alexandrite and diamond coronet cluster ring, circa 1915. Hatton Garden5

Ceylon Alexandrite and diamond coronet cluster ring, circa 1915. Hatton Garden6

Ceylon Alexandrite and diamond coronet cluster ring, circa 1915.

Platinum, Alexandrite, Diamond

£12,000

and coronet ring. Set to centre with an oval unenhanced Ceylon alexandrite in an setting with an approximate weight of 1.30 , encircled by fourteen shape in open back and settings with a combined approximate weight of 0.70 carats, to an elegant elongated design featuring scalloped edging, a decoratively pierced with scrolling motifs, and open backoling, leading to inwardly tapering raised with detail and flowing through to a solid . , 1915, accompanied by Gemmological Certification Services report #5783-1799.

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Reference Number 28104

Ring size: L½

Size Guide

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

Period Edwardian

TOTAL / RING Weight 3.88 grams

Metal Platinum

Gemstone Alexandrite, Old Cut, approximately 1.3ct 14 x Diamonds, Old Mine, approximately 0.7ct total

Condition

This ring is in good condition.

Chairman's Notes

Often described by as “emerald by day, ruby by night,” alexandrite is the very rare colour-change variety of the mineral chrysoberyl. This gemstone was originally discovered in Russia’s Ural Mountains in the 1830s, and was named after Czar Alexander II. Alexandrite deposits were later discovered in Ceylon, known as the “jewel box of the Indian Ocean”.

Alexandrite is considered one of the most coveted and rarest gemstones in the world. Fine examples displaying a clear colour change, strong saturation and good clarity are highly sought after by gem collectors and jewellery-enthusiasts the world over.

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

Ceylon Alexandrite and diamond coronet cluster ring, circa 1915.

Platinum, Alexandrite, Diamond

£12,000

About the Gemstone

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