Effective as of January 1, 2026
1. Seller Information
DIAMSTAR
Sole Proprietorship – Elisa RENAUT
Address: 10 Rue de la Paix, 75002 Paris, France
SIRET Number: 902 412 105 00048
EU VAT Number: FR90241210500048
Email: info@diamstar.co
Website: https://www.diamstar.co
2. Scope
These General Terms and Conditions of Sale (“Terms”) govern all sales concluded through the website www.diamstar.co between DIAMSTAR and any adult consumer within the meaning of the applicable consumer protection laws.
Placing an order constitutes full and unconditional acceptance of these Terms.
3. Products
DIAMSTAR offers natural diamonds, lab-grown diamonds, melee diamonds, as well as diamond jewelry, including engagement rings, tennis bracelets, earrings and other custom-made creations.
Certified diamonds are sold loose and are accompanied by an authenticity certificate issued by an independent gemological laboratory (GIA, IGI, HRD or any other recognized laboratory, depending on the product reference).
Jewelry created through the DIAMSTAR configurators is manufactured exclusively to order according to the customization options selected by the customer. Depending on the type of jewelry, these options may include the diamond shape, jewelry style, setting type, metal, gold purity, carat weight, size, personalized engraving or any other option offered by the configurator.
The essential characteristics of each product (dimensions, weight, color, clarity, shape, metal, setting type, total carat weight, engraving where applicable, certificate number or any other relevant information) are specified on the corresponding product page.
Photographs, 3D renderings, videos and illustrations displayed on the website are provided for illustrative purposes only and are not contractually binding. Slight variations in color, proportions or appearance may occur due to screen settings, materials, the natural characteristics of gemstones or manufacturing constraints.
4. Prices
Prices displayed on the website are expressed in Euros (€) or, where this feature is available, in the customer’s local currency according to the selected delivery country.
For orders delivered within France and the European Union, prices are shown inclusive of all applicable taxes (VAT included).
For orders shipped outside the European Union, prices are shown exclusive of taxes. French VAT does not apply. Customs duties, local taxes or customs clearance fees may be charged by the authorities of the destination country. Such charges remain the sole responsibility of the customer.
Diamond prices may change at any time depending on market conditions and product availability.
DIAMSTAR reserves the right to modify its prices without prior notice. The applicable price is the one displayed on the website at the time the order is finally confirmed.
5. Orders
The ordering process includes, in particular, the following steps:
Selection of one or more products (diamonds, jewelry or any other products available on the website);
Product customization, where available through a DIAMSTAR configurator;
Shopping cart validation;
Entry of billing and shipping information;
Secure payment;
Order confirmation by email.
The customer is solely responsible for the accuracy of the information provided when placing an order, including their identity, contact details and shipping address.
Any order constitutes full acceptance of these General Terms and Conditions of Sale.
DIAMSTAR reserves the right to refuse, suspend or cancel any order that appears abnormal, fraudulent or suspicious, or in the event of a previous dispute with the customer.
6. Payment
Orders must be paid online at the time they are placed through a secure connection using HTTPS and SSL encryption protocols.
The following payment methods are accepted:
Credit or debit card (Visa, Mastercard and American Express) via Stripe or Shopify Payments;
Bank transfer, available upon request and subject to DIAMSTAR’s approval. Payment instructions will then be provided by email.
An order shall only be considered final once full payment has been received.
DIAMSTAR reserves the right to suspend or cancel any order in the event of suspected fraud, unauthorized use of a payment method or payment-related issues.
No shipment and no production of any custom-made jewelry created through a DIAMSTAR configurator will begin until payment has been fully validated.
7. Order Cancellation
Any order placed on www.diamstar.co shall be considered firm and final once payment has been confirmed.
However, DIAMSTAR may consider a cancellation request under the following conditions.
7.1 Before Shipment or Production Begins
Any cancellation request must be sent by email to:
info@diamstar.co
before the order has been shipped or, in the case of custom-made jewelry created through a DIAMSTAR configurator, before production has commenced.
DIAMSTAR reserves the right to accept or refuse any cancellation request depending on the progress of order preparation or manufacturing.
If the cancellation is accepted, the refund will be processed within a maximum period of fourteen (14) days.
7.2 After Shipment
Once an order has been shipped, it can no longer be cancelled.
Where applicable, customers may exercise their statutory right of withdrawal under the conditions set out in Article 9 of these General Terms and Conditions of Sale.
7.3 Non-Cancellable Products
The following products cannot be cancelled once the order has been confirmed:
engraved or personalized diamonds;
diamonds specially sourced at the customer’s request;
diamonds ordered as part of a bespoke request;
jewelry created through the DIAMSTAR configurators (including engagement rings, tennis bracelets, earrings and any other custom-made jewelry);
more generally, any product manufactured according to the customer’s specifications or clearly personalized, in accordance with Article L221-28 of the French Consumer Code.
8. Delivery
8.1 Shipping
All orders are shipped from Paris, France, in discreet, secure and fully insured packaging appropriate to the value of the products.
8.2 Delivery Destinations
DIAMSTAR ships to, among others, the following countries:
Austria, Belgium, Bulgaria, Canada, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France (mainland), Germany, Greece, Hong Kong, Hungary, Ireland, Italy, Japan, Latvia, Lithuania, Luxembourg, Malta, Monaco, the Netherlands, Poland, Portugal, Romania, Singapore, Slovakia, Slovenia, Spain, Sweden, Switzerland, the United Kingdom and the United States.
This list may be updated at any time.
8.3 Shipping Method
Orders are shipped through specialized carriers with insurance appropriate to their value and, where required, delivery against signature.
8.4 Delivery Times
Delivery times are provided for information purposes only.
Certified Diamonds
Mainland France: approximately 5–10 business days
European Union, Monaco, United Kingdom and Switzerland: approximately 6–12 business days
Outside the European Union: approximately 10–15 business days
Custom Jewelry
Jewelry created through the DIAMSTAR configurators (including engagement rings, tennis bracelets, earrings and any other custom-made jewelry) is manufactured exclusively to order.
The estimated manufacturing and delivery time is approximately 20–25 business days.
DIAMSTAR shall not be held liable for delays attributable to the carrier, customs or administrative authorities, or any event beyond its reasonable control.
8.5 Customs Duties and Taxes
No customs duties apply to deliveries within France or the European Union.
For shipments outside the European Union, customs duties, local taxes or customs clearance fees may be charged by the authorities of the destination country.
Such charges remain the sole responsibility of the customer.
8.6 Customs Delays or Import Refusal
DIAMSTAR shall not be held liable for any delay, detention, seizure, destruction or refusal of import imposed by the competent authorities of the destination country.
No compensation or refund may be claimed in such circumstances, except where required by mandatory applicable law.
9. Right of Withdrawal – European Union
9.1 Withdrawal Period
In accordance with Article L221-18 of the French Consumer Code, customers have a period of fourteen (14) days from receipt of their order to exercise their statutory right of withdrawal, subject to the exceptions provided by law.
9.2 Exclusions
In accordance with Article L221-28 of the French Consumer Code, the right of withdrawal does not apply in particular to products:
manufactured according to the customer’s specifications or clearly personalized, including jewelry created through the DIAMSTAR configurators (engagement rings, tennis bracelets, earrings and any other custom-made jewelry);
engraved or otherwise personalized at the customer’s request;
whose value depends on fluctuations in the financial market beyond DIAMSTAR’s control;
returned incomplete, used, worn, altered or no longer in their original condition.
9.3 Returns of Certified Diamonds
Before requesting a return, customers must contact Customer Service at:
info@diamstar.co
Each returned product is subject to a prior inspection carried out by DIAMSTAR or an independent gemological laboratory in order to:
verify the authenticity and integrity of the diamond;
verify the conformity of the grading certificate;
inspect the condition of the packaging and all items supplied with the product.
A refund will only be issued after this inspection has been successfully completed and the returned product has been confirmed to be identical to the product originally shipped.
9.4 Return Shipping Costs
Return shipping, insurance and transportation costs remain the sole responsibility of the customer.
9.5 Melee Diamonds
The melee diamonds supplied by DIAMSTAR are prepared, calibrated and packaged exclusively according to the specifications of each individual order (size, color, clarity and quantity).
Due to their individualized preparation, traceability requirements and associated quality controls, return requests can only be accepted on an exceptional basis and subject to DIAMSTAR’s prior approval.
Any return must concern a complete lot that is:
unused;
unhandled;
kept in its original sealed parcel paper.
The returned lot will undergo a complete gemological and quality inspection.
DIAMSTAR reserves the right to refuse any return showing signs of parcel paper opening, handling, mixing, alteration, use or any inconsistency with the lot originally supplied.
10. Right of Withdrawal – Outside the European Union
10.1 No Right of Withdrawal
For any order delivered outside the European Union, no right of withdrawal applies.
All sales become final upon shipment.
No return, exchange or refund may be accepted unless required by the mandatory laws applicable in the destination country.
10.2 Final Nature of the Order
By confirming an order, the customer expressly acknowledges that it becomes irrevocable once shipped, including in the event of refusal of delivery.
10.3 Customs Duties and Taxes
Orders shipped outside the European Union are invoiced exclusive of French VAT.
Customs duties, local taxes or customs clearance fees may be charged by the competent authorities of the destination country.
Such charges remain the sole responsibility of the customer.
Customers are responsible for ensuring compliance with the import regulations applicable in their country before placing an order.
10.4 Refusal of Delivery or Import Charges
If the customer refuses to pay customs duties, taxes or import charges, or refuses delivery of the shipment for any reason whatsoever, the order shall be deemed definitively accepted.
No refund, whether full or partial, will be issued, even if the shipment is returned to DIAMSTAR.
10.5 Intervention by Authorities
DIAMSTAR shall not be held liable for any delay, detention, seizure, destruction or refusal of import imposed by the competent authorities of the destination country.
No compensation or refund may be claimed in such circumstances.
11. Statutory Warranties
In accordance with Articles L217-3 et seq. of the French Consumer Code relating to the statutory warranty of conformity, and Articles 1641 et seq. of the French Civil Code relating to hidden defects, customers benefit from the statutory warranties provided under applicable French law.
Any claim must be submitted to info@diamstar.co and supported by any relevant documentation, including photographs, the gemological certificate, an expert report or any other appropriate evidence.
Any warranty claim may be subject to a prior inspection of the product by DIAMSTAR or by an independent gemological laboratory or expert appointed for this purpose.
12. Limitation of Liability
DIAMSTAR shall not, in particular, be held liable for:
consequences resulting from improper handling, misuse, insufficient maintenance or inappropriate storage of the products by the customer;
errors made by the customer when placing an order, including but not limited to shipping information, product selection, customization options, dimensions or sizes provided;
delays, loss, theft or damage occurring after the shipment has been duly delivered to the customer;
delays or incidents attributable to the carrier, customs authorities or administrative authorities;
events of force majeure, including but not limited to natural disasters, armed conflicts, strikes, pandemics, cyberattacks, network failures or any event beyond DIAMSTAR’s reasonable control;
indirect or consequential damages, including financial loss, loss of business, loss of opportunity or commercial damages.
Prior to delivery, transportation risks are covered by the carrier under the applicable transport agreement and the insurance policy in place.
If a shipment is delivered with visible signs of opening, damage or missing contents, the customer must immediately notify the carrier by making detailed reservations and inform DIAMSTAR without undue delay.
Proof of delivery shall be provided by the carrier, including by means of the recipient’s signature where required, or by any other valid proof of delivery.
In all circumstances, DIAMSTAR’s liability shall be limited to the amount actually paid by the customer for the order concerned.
13. Intellectual Property
All content available on www.diamstar.co, including but not limited to text, photographs, videos, illustrations, visual materials, logos, graphics, 3D models, configurators, databases, software developments and technical elements, is protected by applicable intellectual property laws.
Such content remains the exclusive property of DIAMSTAR or its respective rights holders.
Any reproduction, representation, distribution, adaptation, extraction or exploitation, in whole or in part, without DIAMSTAR’s prior written authorization, is strictly prohibited.
14. Personal Data
Personal data collected by DIAMSTAR is processed exclusively for the purposes of order management, customer service, compliance with legal obligations and the improvement of the services offered by DIAMSTAR.
Such processing is carried out in accordance with the General Data Protection Regulation (GDPR) and applicable French data protection laws.
Customers have the right at any time to access, rectify, erase, restrict the processing of, object to the processing of, and request the portability of their personal data.
Any request may be sent to:
info@diamstar.co
15. Governing Law and Dispute Resolution
These General Terms and Conditions of Sale shall be governed by and construed in accordance with French law.
In the event of a dispute, the parties undertake to seek an amicable resolution as a priority.
Failing an amicable settlement, the dispute shall be submitted to the competent French courts.
In accordance with Article L.612-1 of the French Consumer Code, customers may also refer the matter free of charge to a consumer mediation service.
CM2C – Centre de la Médiation de la Consommation de Conciliateurs de Justice
Customers may also use the European Online Dispute Resolution (ODR) platform:
https://ec.europa.eu/consumers/odr/
16. Contact
For any questions, requests for information or complaints, DIAMSTAR Customer Service can be contacted as follows:
By email:
info@diamstar.co
By post:
DIAMSTAR
10 Rue de la Paix
75002 Paris
France