"By day, blue-green. By night, reddish purple." — A one-of-a-kind ring crafted from "Silky Alexandrite," a gemstone that dramatically changes color depending on the light source. Alexandrite, a rare natural stone, appears deep blue-green under sunlight or fluorescent light, and shifts to a reddish purple under incandescent lighting. Among its varieties, the "Silky Alexandrite" chosen for this piece is especially rare, with a veil of light that seems to dissolve threads of silk within, evoking a sense of gentle warmth rather than sharp brilliance. To highlight the delicate coloration within the marquise cut—imbued with soft gradations and nuance—countless melee diamonds encircle the stone, enhancing its brilliance and completing the ring with added sparkle. Furthermore, the three prongs that hold the Silky Alexandrite extend outward into fine hand-engraved lines reminiscent of flashes of light, lending a subtle yet striking presence to the entire piece. Perfect as an elegant accent for everyday wear, Alexandrite is also cherished as the birthstone of June, making this a meaningful and protective gift for someone born in that month.
【 Ryui Monthly piece 】
Gemstones shaped by time and chance No two are the same Our designers carefully select a "fragment" of nature every month Sharing with you the design and production process until it becomes jewelry —a special collection.
material:K18YG , Alexandrite , Diamond
stone size:approx. 0.16ct ( Melee diamonds:approx. 0.15ct )
top size:approx. H12.9mm × W7.6mm × D3.0mm
ring width:approx. 1.8mm
ring size:13
I-1072
*This ring can be resized within ±3 sizes from the stock size (delivery time: about 4~5 weeks). Please select "Resize from stock size" Please fill in your desired size in the option form and proceed to purchase.
We use Japanese sizes. For international equivalents, please refer to the correspondence table below.
Perimeter (mm)
Inner diameter (mm)
Japan (JCS)
EU (JIS / ISO)
US
UK
40.8
13
1
41
1
C
41.9
13.4
2
42
2
D
42.9
13.7
3
43
2.5
E
44
14
4
44
3
F
45
14.4
5
45
3.5
G
46.1
14.7
6
46
3.5 – 4
G – H
47.1
15
7
47
4 – 4.5
H – I
48.2
15.4
8
48
4.5 – 5
I – J
49.2
15.7
9
49
5
J
50.3
16
10
50
5.5
K
51.3
16.4
11
51
6
L
52.4
16.7
12
52
6.5
L – M
53.4
17
13
53
6.5 – 7
M – N
54.5
17.4
14
54
7 – 7.5
N – O
55.5
17.7
15
55
7.5 – 8
O – P
56.5
18
16
56
8
P
57.6
18.4
17
57
8.5
Q
58.6
18.7
18
58
9
R
59.7
19
19
59
9.5
S
60.7
19.4
20
60
10
T
61.8
19.7
21
61
10 –
T – U
62.8
20
22
62
10.5
UK
63.9
20.4
23
63
11
V
64.9
20.7
24
64
11.5
W
66
21
25
65
12
X
Resizing at the time of purchase
For rings over ¥33,000 (tax included)
We offer complimentary resizing within ±3 sizes from the size in stock. If you wish to have your ring resized, please proceed to the purchase screen of the item and enter the desired size in the remarks form in the shopping cart. Production period: about 4 weeks
For rings under ¥33,000 (tax included)
We do not accept resizing from stock items. Please contact us using the inquiry form and we will make a custom order in the desired size. Production period: about 5 weeks
Selecting your ring size
We recommend choosing a size that you can comfortably wear without feeling pressure or tightness when you make a fist, and without discomfort between adjacent fingers.
For wide rings of 6.0 mm or more
Compared to the number measured with a typical ring gauge, a wide width ring may feel a little tight to wear due to its large surface area. When considering a wide ring, we recommend that you choose a slightly looser size than you usually wear, 1 to 1.5 sizes up.
Please note that some rings cannot be resized due to their design.
Please check the details on each product page.
Contact
Please feel free to contact us using the form below.