"By day, blue-green. By night, reddish-purple." — A one-of-a-kind ring crafted from "Silky Alexandrite," a gemstone that changes color dramatically depending on the light source. Under sunlight or fluorescent light, it appears a deep blue-green; under incandescent light, it transforms into a reddish-purple hue. Alexandrite is a highly rare natural gemstone. Among them, the "Silky Alexandrite" we selected for this piece is particularly rare—it holds a veil of light that seems to melt threads of silk within, evoking a sense of gentle warmth rather than sharp brilliance. A triangular piece with delicate hues and soft gradations is surrounded by numerous melee diamonds, enhancing its brilliance and transforming it into a radiant ring. The three prongs that hold the Silky Alexandrite extend into fine hand-engraved lines reminiscent of a flash of light, adding a quiet yet striking accent to the entire piece. This ring is perfect not only for everyday elegance, but also as a meaningful gift—since Alexandrite is the birthstone of June, it makes an ideal protective charm for those 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. 0.50ct ( Melee diamonds:approx. 0.17ct )
top size:approx. H11.0mm × W11.0mm × D3.7mm
ring width:approx. 1.8mm
ring size:12
I-1071
*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.