Earring Backs — 3 Materials

SMUK is a Tokyo-based sustainable jewelry brand founded on the philosophy of "Less trash, more marine life" and "Save Wildlife."

Crafted from high-quality sterling silver (925), our pieces are beautifully finished with rhodium or 18K gold plating. We also offer 14K solid gold jewelry, along with refined lines featuring natural gemstones carefully sourced from around the world.

• Due to the nature of the manufacturing process and materials, slight variations in color, shape, or size may occur between individual items. We appreciate your understanding.
• Items made with natural materials each have their own unique character in pattern, color, and inclusions. Product photos are for reference only, and the actual item may differ slightly in appearance and texture.
• While we make every effort to reproduce the true colors as accurately as possible, the appearance may vary depending on lighting conditions and your monitor settings.
• Pre-order items require advance payment and cannot be cancelled once the order has been placed.
• We are unable to accept returns or exchanges for the reasons stated above. In the unlikely event that an item arrives defective or damaged, we will assist you in accordance with our return and refund policy. Before placing your order, please be sure to review our ［Return & Refund Policy］ and ［Shipping Information］.

Pre-order items are products that are currently in production or awaiting restock and cannot be shipped immediately. Please review the following points carefully before placing your order.

• We reserve your stock once the order is confirmed; however, the shipping date may vary depending on production and logistics conditions.
• Payment is required in advance, and orders cannot be cancelled or returned once placed.
• If you order regular items and pre-order items together, all items will be shipped together once everything is ready. If you need the in-stock items sooner, please place separate orders.
• The estimated shipping date is listed on each product page, but it is only a guide and does not guarantee the delivery date.
• In the unlikely event of a production discontinuation or a significant stock shortage, we will contact you individually to arrange a cancellation or refund.
• Changes to an order after it has been placed (item, quantity, shipping address, etc.) cannot be accepted, so please review your order carefully before confirming.

■ Delivery Times & Shipping Fees
▼ International Shipping (from Japan)
・Singapore, Malaysia, Taiwan and other Asian destinations: approx. 4–7 business days｜Flat rate ¥3,000
・Other regions: approx. 7–14 business days｜Flat rate ¥6,000
※ Shipped by Japan Post and delivered by your local postal service. Any import duties or taxes are paid by the recipient.

▼ Shipping within Japan｜Flat rate ¥500
※ Free shipping on orders of ¥10,000 or more.

■ Dispatch (Japan Standard Time)
・Orders placed before 10:00 AM: shipped the same day
・Orders placed after 10:00 AM: shipped the same day or the next business day
※ Excluding weekends, Japanese public holidays and the New Year period.
────────────
Once your order ships, you will receive a shipping confirmation email with a link to track your delivery.

▶ View full shipping details

【Payment Methods】
▼ Available for all orders
Credit cards (Visa, Mastercard, American Express, JCB), Apple Pay, Google Pay, PayPal
※ Payment is completed when your order is confirmed, and we then begin preparing it for dispatch.
※ Prices are in Japanese yen (JPY). The amount charged in your local currency may vary slightly depending on your card issuer's exchange rate and fees.

▼ For orders shipped within Japan only
Mobile payments such as PayPay, bank transfer, convenience store payment, Pay-easy
※ For bank transfer, convenience store payment and Pay-easy, please complete payment within 3 days of ordering. Your order ships after payment is confirmed.
※ Convenience store payment and Pay-easy incur a ¥220 (tax incl.) processing fee.

Silver 925｜Why We Choose a Material Made to Last

SMUK jewelry is primarily made from Silver 925, an alloy containing 92.5% pure silver.
Unlike stainless steel or brass with silver-colored plating, where the underlying metal may become exposed as the surface wears away, Silver 925 is made of silver throughout.

・Even if it tarnishes, its shine can be restored with polishing
・Even if the plating wears away, the underlying material remains silver
・With proper care, it can be enjoyed for many years

▼ Learn More
"Why Choose Silver 925: Jewelry That Lives in Harmony with Nature"

SMUK uses four types of plating finishes, selected according to the materials and intended use of each piece of jewelry.

• Rhodium Plating
  A finish made with a rare precious metal from the platinum group. It offers excellent resistance to tarnishing and scratches, with a clear, bright silver tone. Suitable for those with sensitive skin.
• 18K Gold Plating
  A finish made by coating sterling silver with 75% pure gold. It creates a rich, warm gold tone.
• 14K White Gold Plating
  A white gold finish with 58.3% pure gold content. Its soft, elegant white tone pairs beautifully with pearls and delicate designs.
• Gold Vermeil
  A finish featuring a thick gold layer of at least 2.5 microns over a Sterling Silver 925 base. It offers greater durability than standard plating, allowing its brilliance to last longer.

Learn more:
Jewelry Plating Guide