Privacy policy

Last updated: October 11, 2026

JEWELRY CASTLE operates this store and website, including all related information, content, features, tools, products, and services, to provide you with a curated shopping experience (the "Services"). JEWELRY CASTLE is powered by Shopify, which enables us to provide the Services to you. This Privacy Policy describes how we collect, use, and disclose your personal information when you visit, use, make a purchase or other transaction through the Services, or otherwise communicate with us. If there is a conflict between our Terms of Service and this Privacy Policy, this Privacy Policy will control with respect to the collection, processing, and disclosure of your personal information.

Please read this Privacy Policy carefully. By using or accessing the Services, you acknowledge that you have read this Privacy Policy and understand the collection, use, and disclosure of your information as described in this Privacy Policy.

Personal Information We Collect or Process

When we use the term "personal information," we mean information that identifies or can reasonably be linked to you or another individual. Personal information does not include information collected anonymously or de-identified so that it cannot identify or reasonably be linked to you. Depending on how you interact with the Services, where you live, and as permitted or required by applicable law, we may collect or process the following categories of personal information, including inferences drawn from that information:

• Contact details: Including your name, address, billing address, shipping address, phone number, and email address.
• Financial information: Including credit card and debit card information, financial account numbers, payment information, financial account information, transaction details, payment methods, payment confirmations, and other payment-related details.
• Account information: Including your username, password, security questions, preferences, and settings.
• Transaction information: Including products you view, add to your cart, or add to your wishlist, products you purchase, return, exchange, or cancel, and your past transaction history.
• Communications with us: Including information you provide when communicating with us, such as when contacting customer support.
• Device information: Including information about your device, browser, network connection, IP address, and other unique identifiers.
• Usage information: Including information about your interactions with the Services, such as how and when you access or navigate the Services.

Sources of Personal Information

We may collect personal information from the following sources:

• Directly from you: Including when you create an account, visit or use the Services, communicate with us, or otherwise provide your personal information.
• Automatically through the Services: Including from your device when you use our products and services or visit our website, and through cookies and similar technologies.
• From our service providers: Including when we engage them to provide certain technologies or to collect or process your personal information on our behalf.
• From our partners and other third parties.

How We Use Your Personal Information

Depending on how you interact with us and which Services you use, we may use personal information for the following purposes:

• Providing, personalizing, and improving the Services: We use your personal information to provide the Services to you. This includes fulfilling our contract with you; processing payments; fulfilling orders; remembering your preferences and products of interest; sending account-related notifications; processing purchases, returns, exchanges, and other transactions; creating, maintaining, and managing your account; arranging shipping; facilitating returns and exchanges; enabling you to post reviews; and providing a personalized shopping experience, such as recommending products based on your purchase history. This may include using your personal information to better personalize and improve the Services.
• Marketing and advertising: We use your personal information for marketing and promotional purposes. For example, this may include sending marketing, advertising, or promotional communications by email, text message, or postal mail, and displaying online advertisements through the Services or on other websites based on products or services you previously purchased or added to your cart, or other interactions with the Services.
• Security and fraud prevention: We use your personal information to authenticate accounts, provide a secure payment and shopping experience, detect, investigate, and respond to potential fraudulent, unauthorized, illegal, unsafe, or malicious activity, protect public safety, and maintain the security of the Services. If you register an account to use the Services, you are responsible for keeping your account credentials secure. We strongly recommend that you do not share your username, password, or other access information with anyone.
• Communicating with you: We use your personal information to provide customer support, respond to you promptly, deliver effective services, and maintain our business relationship with you.
• Legal reasons: We use your personal information to comply with applicable law and respond to valid legal processes, including requests from law enforcement or government authorities. We may also use it to participate in or investigate civil discovery proceedings, potential or actual litigation, or other legal disputes, and to investigate and enforce potential violations of our Terms of Service or policies.

How We Disclose Personal Information

In certain circumstances, we may disclose your personal information to third parties for legitimate purposes in accordance with this Privacy Policy. Such circumstances may include the following:

• To Shopify and vendors or other third parties that provide services on our behalf, such as IT management, payment processing, data analytics, customer support, cloud storage, fulfillment, and shipping.
• To business and marketing partners that provide marketing services and serve advertisements to you. For example, we use Shopify to support personalized advertising through third-party services based on your online activities across different merchants and websites. Our business and marketing partners use your information in accordance with their own privacy policies. Depending on where you live, you may have the right to direct us not to share your information for targeted advertising or marketing based on your online activities across different merchants and websites.
• When you direct, request, or consent to our disclosure of certain information to third parties, such as in connection with shipping products or using social media widgets or login integrations.
• Within our affiliates or other companies in our corporate group.
• In connection with a business transaction such as a merger or bankruptcy; to comply with applicable legal obligations, including responding to subpoenas, search warrants, and similar requests; to enforce applicable Terms of Service or policies; or to protect and defend the Services, our rights, or the rights of users or others.

Our Relationship with Shopify

The Services are hosted by Shopify, which collects and processes personal information about your access to and use of the Services to provide and improve the Services for you. Information you submit to the Services will be transmitted to and shared with Shopify and third parties that may be located in countries other than your country of residence, for the purpose of providing and improving the Services for you. In addition, to help protect, grow, and improve our business, we use certain enhanced Shopify features that incorporate data and information obtained from your interactions with our store, other merchants, and Shopify. To provide these enhanced features, Shopify may use personal information collected about your interactions with our store, other merchants, and Shopify. In these circumstances, Shopify is responsible for processing your personal information and responding to requests to exercise your rights regarding the use of your personal information for these purposes. To learn more about how Shopify uses your personal information and what rights you may have, please see the Shopify Consumer Privacy Policy. Depending on where you live, you may be able to exercise certain rights regarding your personal information through the Shopify Privacy Portal.

Third-Party Websites and Links

The Services may contain links to websites or other online platforms operated by third parties. If you follow links to sites that are not affiliated with or controlled by us, please review their privacy and security policies and other terms and conditions. We do not guarantee, and are not responsible for, the privacy or security of such sites or the accuracy, completeness, or reliability of information found on them. Information you provide in public or semi-public spaces, including third-party social networking platforms, may be viewable by other users of the Services or those third-party platforms, without restrictions on its use by us or the third party. Our inclusion of a link does not, by itself, imply endorsement of that platform or its content, owners, or operators, unless expressly stated on the Services.

Children's Data

The Services are not intended for children, and we do not knowingly collect personal information from children under the age of majority in your jurisdiction. If you are the parent or guardian of a child who has provided us with personal information, you may contact us using the details below to request its deletion. As of the effective date of this Privacy Policy, we do not have actual knowledge that we "share" or "sell" (as defined under applicable law) personal information of individuals under 16 years of age.

Security and Retention of Your Information

Please be aware that no security measures are perfect or impenetrable, and we cannot guarantee "perfect security." In addition, information you send to us may not be secure while in transit. We recommend that you avoid using insecure channels to communicate confidential or sensitive information to us.

How long we retain your personal information depends on various factors, including whether we need it to maintain your account, provide the Services, comply with legal obligations, resolve disputes, or enforce other applicable contracts or policies.

Your Rights and Choices

Depending on where you live, you may have some or all of the rights described below regarding your personal information. However, these rights are not absolute, may apply only in certain circumstances, and we may decline your request where permitted by law.

• Right to Access / Right to Know: You may have the right to request access to personal information we hold about you.
• Right to Delete: You may have the right to request deletion of personal information we hold about you.
• Right to Correct: You may have the right to request deletion of personal information we hold about you.
• Right to Data Portability: You may have the right to receive a copy of personal information we hold about you, or to request that we transfer it to a third party, subject to certain circumstances and exceptions.
• Managing Communication Preferences: We may send you promotional emails. You may unsubscribe at any time using the unsubscribe option included in those emails. Even if you unsubscribe, we may continue to send non-promotional emails, such as important notices about your account or orders.

You may exercise these rights where indicated on the Services or by contacting us using the contact details below. To learn more about how Shopify uses your personal information and the rights you may have, including rights related to data processed by Shopify, please visit https://privacy.shopify.com/en.

We will not discriminate against you for exercising these rights. Where permitted or required by applicable law, we may need to verify your identity before processing your request. In accordance with applicable law, you may designate an authorized agent to exercise your rights on your behalf. Before accepting a request from an agent, we may require proof that you have authorized the agent to act on your behalf and may also ask you to verify your identity directly with us. We will respond to your request within the timeframe required by applicable law.

Complaints

If you have concerns about how we process your personal information, please contact us using the contact details below. Depending on where you live, you may have the right to appeal our decision through the contact information below or lodge a complaint with your local data protection authority.

International Transfers

Please be aware that we may transfer, store, and process your personal information outside the country where you live.

When we transfer your personal information outside the EEA or the United Kingdom, we rely on recognized transfer mechanisms, such as the European Commission's Standard Contractual Clauses or equivalent contracts issued by the relevant UK authority, as applicable, unless the destination country has been recognized as providing an adequate level of protection.

Changes to This Privacy Policy

We may update this Privacy Policy from time to time to reflect changes in our practices or for other operational, legal, or regulatory reasons. We will post the revised Privacy Policy on this website, update the "Last updated" date, and provide any notices required by applicable law.

Contact Us

If you have questions about our privacy practices or this Privacy Policy, or if you wish to exercise your rights, please call us at +81 3-6761-3313 or email us at shop@jewelrycastle.jp, or contact us by mail at 株式会社JDSインターナショナル, 178-0063, Tōkyō 練馬区 東大泉4-26-2, ハーモニーコート大泉学園301, Japan.