






BAND EARRING BOULDER OPAL#4293
International: ¥7,000 (some regions excluded)
Customs duties and taxes are the responsibility of the customer.Please contact us for more information.
A single earring featuring a boulder opal with a deep blue base and vibrant green play-of-color. The green shines vividly when viewed from different angles, and subtle red and orange play-of-color is scattered throughout. Although the stone itself is small and rounded, its play-of-color is relatively strong, making it a standout piece when worn. This earring allows you to enjoy the contrast between the subdued base color and the vibrant play of light.
*As this is a one-of-a-kind piece, it will be available only while supplies last.
Material:BOULDER OPAL
K10+K18 (POST)
Stone Size:H 10.3 mm × W 5.3 mm
Choose options







Size & Fit
Although the size is relatively small, the vivid green play-of-color is clearly visible, making it a striking accent when worn near the ear. It’s perfect for casual outfits, of course, but we also recommend pairing it with a chic, fashion-forward look in dark tones—such as black or charcoal—to highlight its deep blue base color.
Since this is sold as a single earring, you can have fun pairing it with a different earring on the opposite ear. Pairing it with black or gray pearls allows you to match the color tones while adding variety in material, while a simple metal earring lets the boulder opal’s play of color take center stage. By not matching the earrings on both ears, you can enjoy an ear look that highlights the unique character of the boulder opal.
Details
ボルダーオパールは、母岩の一部を残した状態で研磨されるオパールで、地色や形、遊色の現れ方が一石ずつ大きく異なります。#4293は暗さのある深いブルーの地色と、その上に現れる鮮やかなグリーンの遊色が特徴。よく見ると赤やオレンジの小さな光も混ざり、見る角度によって複数の色を確認できます。
遊色がはっきりと感じられる個体で、小ぶりながら石そのものの個性が強く現れています。同じ色や形の石を揃えることが難しいため、無理にペアにせず、一石の魅力を活かして片耳ピアスに仕立てています。
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.
