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レインボームーンストーンとプラチナを使った指輪。指で摘んで遊色効果が綺麗に見える自然光の中での写真。
レインボームーンストーンとプラチナを使った指輪。指で摘んで横から見たイメージ。
レインボームーンストーンとプラチナを使った指輪。自然光の中での着用写真。
レインボームーンストーンとプラチナを使った指輪。植物の背景での着用写真。
レインボームーンストーンとプラチナを使った指輪。自然光でのアップの着用写真。
レインボームーンストーンとプラチナを使った指輪。指で摘んで遊色効果が綺麗に見えるアップの写真。
レインボームーンストーンとプラチナを使った指輪。指で摘んで遊色効果が綺麗に見える斜めから見たの写真。
レインボームーンストーンとプラチナを使った指輪。自然光での置き写真。
レインボームーンストーンとプラチナを使った指輪。石に光を通して拡散された光が美しい。
レインボームーンストーンとプラチナを使った指輪。斜めからアップで見たイメージ
レインボームーンストーンとプラチナを使った指輪。正面写真。
上質なグレーの紙箱でできたjanukaのボックス。

BAND RING RAINBOW MOONSTONE#4104

Sale price¥169,400
size:
SIZE CHART

NECKLACE LENGTH
neck length




RING SIZE

ring size
<BAND / POSITION / SLICE DIAMOND / ROUND etc.>
The size listed is the Japanese size.
Japan size US SIZE Inside Diameter(mm) finger circumference(mm)
1 1 13 40.84
2 2 13.33 41.89
3 2.5 13.66 42.94
4 3 14 43.98
5 14.33 45.03
6 3.5 14.66 46.08
7 4 15 47.12
8 4.5 15.33 48.12
9 5 15.66 49.22
10 5.5 16 50.27
11 6 16.33 51.31
12 6.5 16.66 52.36
13 7 17 53.41
14 7.5 17.33 54.45
15 8 17.66 55.50
16 18 56.6
17 8.5 18.3 57.6
18 9 18.7 58.6
19 9.5 19 59.7
20 19.3 60.7

＜SLICE RING＞

slice size

Diameter S
Diameter L
Japan size 		vertical(mm) beside (mm)
◯ × 5 13.8 16
◯
× 		6 14.2 16
◯
× 		7 14.6 16
◯
× 		8 14.9 16
◯
× 		9 15.3
16
◯
△ 		10 15.6
S:16 L:17
◯
◯ 		11 16 S:16 L:17
△
◯ 		12 16.5
S:16 L:17
×
◯ 		13 16.9
17
×
◯ 		14 17.2
17
×
◯ 		15 17.5
17

-Points for choosing ring size

The size of a ring varies depending on the design and other factors, even if the number is the same.
If you want to know the size yourselfRefer to the following

【Arm width】

  • thick：Tendency to feel a little pressure due to the large adhesive surface between fingers
    　　→ A slightly larger size is recommended.
  • thin：Tendency to turn easily and feel loose
    　　→ A slightly smaller size is recommended.

【feeling of wearing】

  • Too tight
    → If you feel congestion or pain when you goop your hands
  • Too loose
    → When removing it, the joint, skin, or flesh is not caught and it comes off easily. Or if it comes off when you wave your hand.

【How to measure your own size】

  1. Cut a long strip of paper about the width of the ring.
  2. Wrap the paper around the thickest part, such as the second joint of your finger or the base of your finger.
  3. Mark the areas where the paper overlaps with a pen.
  4. Remove the paper from your fingers and measure the length of the marker.
  5. Find the closest number in the "Finger Circumference" section of the ring size chart above.

送料について ｜ 配送日について｜ LINEで問い合わせ

International: ¥7,000 (some regions excluded)
Customs duties and taxes are the responsibility of the customer.Please contact us for more information.

#4104

A band ring featuring a rainbow moonstone with a poised presence and a quietly luminous glow.
A K10 yellow gold line pierces straight through the translucent stone, creating a sculptural beauty.

Depending on the angle of light, the rainbow moonstone softly reveals blue and pink iridescent hues. Within its soft milky white, subtle rainbow nuances shimmer like a sky veiled in morning mist. Enclosing this stone, whose expression shifts with each facet, within the gold line that runs through it, further accentuates its ephemeral charm.

This unique structure, achieved not by claw-setting the stone but by “supporting” it like an architectural element, is characteristic of the Band Series. The design, where the gold frame fits perfectly along the grooves carved into the stone, evokes the feel of a one-of-a-kind art piece rather than mere jewelry.

Pair it casually with a T-shirt style for a touch of poise and poetry on your hand. Layered with dressier attire, it adds just the right amount of effortless flair. When worn with monochrome or earth-toned outfits, the stone's light becomes even more strikingly vivid.

Despite its distinctive silhouette, its natural balance that effortlessly complements the hand is another charm. It possesses a versatility suitable for both everyday wear and as an accent for special occasions.

As this is a one-of-a-kind piece, it will be discontinued once sold out.

※For sizes other than size 11, please allow approximately 1.5 months for resizing.

Band series

Unlike conventional stone clasps, this unique stone clasp is set with gold lines and unevenness by digging a groove in the stone. The stone is not covered by claws, so the entire view of the stone can be seen, and the non-decorative structure is a feature of the design. The series is the result of handiwork that “only a person can do” to the nearest 0.1 millimeter, using advanced processing techniques by a precious stone engraver and a craftsman dedicated to metalworking in Kofu.

Material
  • gem stone (moon stone)
    • Moonstone is the birthstone for June. It is characterized by a soft, moon-like shimmer (light) on its surface.
  • PT900
Size
  • stone size:H9.0mm×W6.3mm
  • ring size:11(JP) / 6(US)
    [sizechart]
Attention
  • This is a photo of the actual product, but the image shown is an image only.
  • Natural stones may be damaged if dropped or subjected to strong impact.
  • If not in stock, we will accept orders (approx. 1.5 months)[Contact Us]Please contact us from、
  • For rings, please allow 1.5 months for resizing.
Refund

These items are returnable within 7 days of purchase. We cannot accept items that have excessive use, or items that are damaged such as scratches or missing stones that were not present at the time of delivery. Please note that we also cannot accept returns for ordered items (including size orders). please return the item with all accessories such as the box and warranty card (the same as when the item arrived). The return shipping costs will be borne by the customer. Please note that the return shipping fee will be charged to the customer.
[ For more information ]
Size & Fit

Size & Fit

バゲットカットのシャープなフォルムとプラチナの組み合わせにより、レインボームーンストーンでありながら甘くなりすぎず、すっきりとした印象で身に着けられます。

遊色は動きに合わせてさりげなく表情を変え、手元に静かな華やかさを添えてくれます。カジュアルなTシャツやシャツスタイルにはもちろん、モノトーンやジャケットなどの洗練された装いとも相性がよく、大人のコーディネートに自然と馴染みます。

一本でも十分な存在感がありますが、強い色味の石ではないので、お手持ちのリングと重ね付けもしていただきやすいリングです。幅広いスタイリングをお楽しみください。

Details

Details

レインボームーンストーンは、光の角度によってブルーやピンクなどの遊色が現れる天然石です。

こちらは、角を落とした長方形のバゲットカットを採用。すっきりとしたフォルムが遊色の美しさをより際立たせ、やわらかな石の印象にほどよいシャープさを加えています。

一本のプラチナバーで石を留めるbandシリーズならではの構造は、石そのものの美しさを引き立てるjanukaオリジナルのセッティングです。プラチナの落ち着いた白い輝きが、レインボームーンストーンの遊色をよりクリアに映し出し、透明感のある表情を楽しめます。

天然石のため、遊色の現れ方や透明感には一点ごとに個体差があり、それぞれ異なる魅力を持っています。

BAND

BAND Collection

Unlike conventional stone-setting techniques, this series uses januka’s original setting method, in which grooves are carved directly into the stone to secure it with lines and raised sections of gold. With no prongs or other elements covering the stone, its entire form remains visible, allowing the structure itself—rather than added decoration—to become the design.
Each piece is created through the highly specialized craftsmanship of a gemstone carver in Kofu and a dedicated metalworker. Working with precision down to 0.1 mm, the series is defined by a level of handcraft and expertise that only these individual artisans can achieve.

FAQ

Q. The design looks delicate. Is it fragile?

A.The BAND series is designed with minimal visible metal in order to showcase the natural beauty of each stone. Because of this delicate construction, strong impacts or contact with hard surfaces may cause the stone to chip or break. Please note that durability also varies depending on the hardness and characteristics of the natural stone you choose.

Rather than wearing these pieces continuously every day, we recommend treating them as special jewelry to be worn when going out and handling them with care. With normal wear while out and about, they can be enjoyed comfortably without concern.

Q. What should I do if my jewelry becomes damaged?

A.Please contact us through our official LINE account or the contact form on our website. Once we have assessed the condition of the piece, we will provide you with a repair estimate.

If the stone has broken, we may be able to source another stone with a similar character and remake the piece. However, as every natural stone used in the BAND series is one of a kind, we cannot recreate a piece with exactly the same color, shape, or appearance. We appreciate your understanding.

Q. Can I change the ring size or necklace chain length after purchase?

A.Yes. Please contact us through our official LINE account or the contact form on our website.

Ring resizing and necklace chain length adjustments are available after purchase. The cost will vary depending on the type and extent of the adjustment, and we will provide an estimate once we have confirmed the details of your request.

Q. Will I receive the exact stone shown in the product photos?

A.Yes. You will receive the exact piece shown in the photographs.

Every piece in januka’s BAND series is one of a kind, and each item shown in our online store is individually photographed. The photographs therefore show the actual piece you will receive.

We invite you to take your time exploring the unique shape, color, and individual character of each natural stone and choose the piece that speaks to you.

Q. How should I care for and store my jewelry after wearing it?

A.After wearing your jewelry, gently wipe away any perspiration or oils with a soft cloth or jewelry cloth before storing it.

Because the BAND series exposes a larger surface area of the stone, we recommend storing each piece separately in its own case or pouch to prevent it from coming into contact with other jewelry and becoming scratched.

Please also avoid direct contact with water, cosmetics, perfume, and other substances that may affect the stone.

Q. Can I purchase from outside Japan?

A.Yes. We offer international shipping via DHL.

International orders are subject to a shipping fee of ¥7,000 in addition to the product price. Any customs duties, import taxes, or other fees imposed by the destination country are the responsibility of the customer.

If you have any questions or concerns about placing an international order, please feel free to contact us by email. We will be happy to assist you.

Q. Can I see and try on the pieces in person before purchasing?

A.Yes. You can view and try on pieces at our flagship store in Omotesando, Tokyo.

The store may also have one-of-a-kind loose stones and finished pieces that are not listed in our online store. As our in-store selection changes over time, we recommend contacting us in advance if you are looking for a particular type of stone.