Site & Account
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Lab-Grown Diamonds
We are committed to making lab-grown diamonds a more accessible and desirable choice for everyday fine jewelry, using only the finest materials.
Our team of experts brings a wealth of knowledge and experience, ensuring that you receive the highest quality diamonds, exceptional craftsmanship, and the most competitive prices without the hassle of comparison shopping.For more details on Luslumin's jewelry quality, please visit Our Quality page.
Lab-grown diamonds are created in advanced laboratory settings that replicate the extreme temperature and pressure conditions under which natural diamonds form deep within the Earth. They are produced using methods such as High Pressure High Temperature (HPHT) or Chemical Vapor Deposition (CVD). These diamonds possess identical physical, chemical, and optical characteristics as natural diamonds.
Lab-grown diamonds are meticulously cultivated by expert scientists in precisely controlled laboratory settings, matching natural diamonds in chemical composition and exceptional optical performance. The fundamental distinction lies in their origin——nature versus scientific cultivation – and the resulting rarity difference. Luslumin's lab-grown diamonds are pure carbon creations, indistinguishable from mined diamonds in terms of optical, physical, and chemical attributes. It's akin to comparing ice made in a freezer with ice harvested from a glacier; both exhibit the same chemical, physical, and optical properties regardless of origin. Our diamonds undergo a simulated natural crystallization process within the nurturing environment of modern technology. Discover more about the quality of our lab-grown diamonds.
Lab-grown diamonds are cultivated using the Chemical Vapor Deposition (CVD) method. The process begins with a minuscule carbon 'seed' placed within a specialized CVD reactor chamber. Specific gases interact with controlled electric currents, triggering chemical reactions to form plasma clouds that facilitate the gradual growth of the 'seed.' After approximately 6 to 12 weeks, a substantial diamond rough emerges. Each stone is then cut, polished, and graded to the same high standards as natural diamonds, ensuring every piece sparkles magnificently.
CVD diamonds are those grown in labs using Chemical Vapor Deposition technology. CVD is the leading method for producing high-quality, colorless, large lab-grown diamonds, favored for its ethical sourcing, cost-effectiveness, and precise control over product size, shape, and quality.
HPHT diamonds are another type of lab-grown diamond produced using High Pressure High Temperature technology. As the name suggests, this technique involves subjecting carbon materials to extreme pressures and temperatures to induce diamond formation. HPHT was among the first methods to achieve lab-grown diamonds, patented by GE in the 1950s.
In our laboratory setting, cultivating a diamond rough of sufficient size takes around 6 to 12 weeks. It's intriguing to note that Earth's current conditions no longer support new diamond formation, much like how it no longer produces fresh oil reserves. Predictions suggest that by 2030, there may be no more mineable natural diamond resources left.
Lab-grown diamonds hold high value, often priced lower than comparable quality natural diamonds. Their worth is still determined by the classic 4C criteria (cut, color, clarity, and carat weight), and they are increasingly appreciated by consumers who champion sustainable fashion.
Lab-grown diamonds cost about 40% less than mined diamonds listed on Rapnet, primarily because mined diamonds can change hands up to 20 times, crossing multiple countries, before reaching consumers, with each step adding to the cost. In contrast, Luslumin's lab-grown diamonds go straight from our lab to our manufacturing facility to you, streamlining the supply chain and reducing costs.
Absolutely. The production of lab-grown diamonds significantly reduces environmental damage associated with traditional mining and its impact on ecosystems, minimizing carbon footprints. This makes them a greener choice, particularly attractive to consumers committed to sustainability.
LusLumin is committed to pursuing exceptional quality standards. We meticulously select high-quality Lab-grown diamonds that are above D color grade and VVS clarity to complete our creations. Each diamond undergoes rigorous screening to ensure it meets our stringent quality requirements. For diamonds over 0.5 carats, we can provide authoritative certificates from the GIA (Gemological Institute of America) or IGI (International Gemological Institute) to attest to their quality and authenticity. These certificates include a unique identification number corresponding to the diamond's girdle, which can be verified using a 10x magnifying glass.If you require a certificate for your diamond, you have the option to request additional shipping at the time of purchase. We promise that every LusLumin cultured diamond will bring you an extraordinary jewelry experience with its exceptional quality and professional certification.
Orders & Shipping
Once your order is submitted, our processing procedures commence promptly. Here's what you need to know regarding modifications and cancellations:
- Order Modifications: Unfortunately, once an order has been successfully placed, it enters immediate processing, and modifications such as changes to product style, quantity, size, color, or shipping address may no longer be possible.
- Order Cancellations: While modifications are restrictive, you can request to cancel your order before it ships. To maximize the chance of cancellation, please contact us immediately ( find our contact details here ) after deciding to cancel. Our customer service team will strive to assist you in halting production or shipment. However, due to our efficient order handling, there is a possibility that the item may ship before your cancellation request can be executed.
- Ineligible for Cancellation: If your order has already shipped, direct cancellation is not an option. Rest assured, you can still take advantage of our free return policy to send back the received merchandise. Upon receipt of the return, we will promptly process your refund in accordance with our refund procedures.
To prevent any inconvenience, we advise thoroughly reviewing your order details and shipping address before finalizing your purchase. Should you notice an error shortly after placing the order, please reach out to our customer service without delay to attempt cancellation.
Certainly. Once your order is completed and ready for shipment, we will send a confirmation email containing the tracking number. This allows you to track the status of your package in real-time and estimate its delivery time. Please note that since each piece of jewelry from Luslumin is meticulously crafted by hand and customized to your specifications, it generally takes 15 to 30 business days from order placement to shipment preparation.
At Luslumin, we are committed to crafting a unique shopping journey for you, from discovering our brand to wearing our jewelry. Your jewelry will be elegantly packaged and accompanied by:
- Exquisite gift bag
- Eco-friendly vegan leather jewelry box
- jewelry polishing cloth
- Gemstone authentication certificate (if applicable)
- Order receipt
- warm welcome letter
Most of our jewelry is handmade and customized to your specifications. After receiving and processing your order, crafting the jewelry takes 15-30 business days. Once completed, your order will be shipped via FedEx, DHL, or UPS domestically or within approximately 5 to 7 days internationally, depending on the destination country/region. View our Shipping & Delivery policy here.
All orders must be signed for by an adult over the age of 21 upon delivery.
We ship to all 50 states in the USA and approximately 50 countries/regions internationally, including Canada, Australia, the United Kingdom, France, Germany, Switzerland, Italy, New Zealand, and more. All international shipments must comply with the laws set by the customs department of your country/region. View our Shipping & Delivery policy here.
Yes, to ensure security, all packages valued over $100.00 require a signature from an adult aged 21 or older upon delivery.
If you would like to surprise someone with a gift from Luslumin, we are more than happy to ship the item to a different address of your choice, such as a friend or family member's address or your workplace. Please provide accurate shipping information during checkout. For transaction security, we may require phone confirmation of the alternate address in some cases.
Returns & Exchanges
At Luslumin, we are committed to providing you with a delightful and worry-free shopping experience. To achieve this, we offer a 30-day return and exchange policy, allowing you ample time to try on and consider your full-priced purchases within 30 days. Below are return and exchange regulations:
- All returned items must retain their original, undamaged product tags, remain in the same condition as when purchased, and be returned in their original packaging.
- Prior authorization from LusLumin is required for all return requests.
- Jewelry sets must be returned in their entirety and not separated. Ensure that all pieces within the set are unworn and still in their initial packaging. Individual components of a set will not be accepted for return.
- All complimentary accessories included with the item, such as gift bags, display boxes, protective films, jewelry cleaning solutions, polishing cloths, GGL authentication cards, etc., must be returned along with the product and remain intact. Missing or damaged accessories may result in additional charges.
- The original invoice or proof of purchase must be included with the returned merchandise.
- Kindly ship the items back to LusLumin directly from the country where you received them originally.
Non-Returnable and Non-Exchangeable Items：
- Customized, engraved, altered, or damaged items cannot be returned or exchanged.
- All sale items are non-returnable.
Return and Exchange Shipping Costs：Customers are responsible for return shipping fees. The original shipping fee (approximately $30) will be deducted from the refund amount. For orders with prepaid shipping fees, the refund amount will be reduced by the shipping fee. Duties and taxes paid separately during checkout will not be refunded.
Limitations：Each customer is entitled to two return/exchange privileges per year. Requests exceeding this limit will not be accepted. View our return policy here.
Return Process:
- Obtain a Return Authorization Code: To initiate a return, please email us at service@Luslumin.com to request your return authorization code. You will then receive an email containing a PDF guide for returns, which should be printed and included with your returned items within two days of receiving it.
- Proper Packaging: Use the original packaging to securely return all items and accessories, clearly marking the outer box as "Luslumin" rather than "Diamonds" for added security.
- Insure Your Package. Ship your package via US Postal Service Express or Priority Mail, insured for the total value of the contents. (FedEx® and UPS® will not insure merchandise over $500)
- Timely Returns: Returned packages must be postmarked within 30 days of receiving your order. Any returns received after this period will not be accepted.
Important Reminders:
- Luslumin assumes no responsibility for lost or damaged items during transit.
- Each customer is limited to two return/exchange requests per calendar year.
- Return shipping costs are the responsibility of the customer. If a returned package is refused, any associated fees will be deducted from your refund.
- Upon receipt of your return, we will conduct a quality inspection. Eligible return or exchange requests will be processed within 10 to 15 business days.
- Returns missing policy tags, altered tags, improperly packaged may be refused or incur restocking fees.
We understand that when choosing your favorite jewelry, you may wish to have more opportunities for comparison and try-on. At Luslumin, we value each piece of jewelry and respect every customer's unique taste.For finished jewelry, we do not recommend purchasing multiple items at once for trial and return. Considering that each Luslumin jewelry piece is custom-made, we advocate for precise selection to avoid waste of resources.We provide professional jewelry consultation services to assist you in selecting your desired styles accurately based on personal preferences, occasion requirements, and other factors. We recommend scheduling an in-depth discussion with a jewelry consultant before making a purchase to clarify your needs and expectations. This ensures that you purchase the most desirable jewelry and minimizes unnecessary returns or exchanges.Requests for returns or exchanges after purchasing multiple items will be handled on a case-by-case basis. Please adhere to the standard return and exchange policy, ensuring that the items are in new condition with all accessories included, and submit your request within the specified timeframe.
Processing Time & Refund Methods
- Product Receipt & Review: Upon receiving your returned item, we will complete the return review and refund process within 10 to 15 business days. During this time, our professional team will thoroughly inspect the merchandise to ensure it meets all requirements outlined in our return policy.
- Refund Issuance: Following successful review, we will initiate the refund using your original payment method within the specified timeframe. This means the refunded amount will be credited back to the credit card, debit card, PayPal account, or other designated account originally used for the purchase.
- Funds Availability: After the refund is processed, your bank or payment platform typically requires an additional 5 to 10 business days to settle the funds into your account. Please note that the exact arrival time may vary due to bank processing speeds and holiday schedules; your patience is appreciated.
- Refund Currency: All refunds are issued in US dollars and we do not accept refunds in any other currency or cryptocurrencies. In case of currency conversion, applicable exchange rates and fees will be determined by your bank or payment platform.
- Refund Progress Notification: Once our team has processed your return and successfully initiated the refund, we will send you a confirmation email, informing you that the refund is underway. Please keep a close eye on your email inbox to stay informed about the progress of your refund.
SIZING
We understand the importance of getting the perfect fit, so we've prepared a detailed ring size guide to help you measure at home with ease. You can download and print our digital ring sizer tool or refer to existing ring sizes. Rest assured with our 30-day worry-free return and exchange policy, along with complimentary resizing within 90 days, ensuring you can shop with confidence.
To create a surprise, discreetly borrow a ring that they currently wear on the corresponding finger and seek assistance from a jewelry expert to measure the size accurately. Additionally, consider collaborating with their close friends, ensuring they can keep the secret. Another method involves wearing the ring on your own finger, gently pushing it to the right position, marking it, and measuring it to estimate the size.
We craft our rings in USA 1⁄4 size increments (for example, 6, 6.25, 6.50, 6.75, etc.). Our standard women's ring sizes range from 3 to 10, and our standard men's ring sizes range from 6 to 13. If your ring size falls outside of our standard range, please contact us to create a custom-sized ring.
We offer one free resizing service within 90 days after delivery, with complimentary adjustments limited to size changes of up to 1/4 size. For adjustments exceeding 1/4 size, to ensure the quality and integrity of the jewelry, we will remake the ring. Please contact our customer service for specific pricing. Some special designs or materials may not be adjustable, including:
- Rings made of non-traditional metal materials such as cobalt, titanium, or zirconium alloys;
- Designs with densely set diamonds around the entire band, which cannot be altered due to structural limitations.
Care & Repair
We offer the following common repair services to help your jewelry regain its brilliance:
- Prong Adjustment and Reinforcement: Carefully repair loose or deformed prongs, stabilize the main and side stones to prevent loss.
- Surface Polishing: Remove scratches and oxidation layers, restoring the bright luster of the metal surface.
- Rhodium Plating Renewal: Re-plate rhodium for platinum jewelry to restore its original pristine appearance.
- Deep Cleaning and Maintenance: Using professional equipment and techniques, remove dirt from both inside and outside the jewelry for comprehensive care.
During the repair process, you only need to bear the transportation costs of sending the jewelry to our factory and us sending it back to you (round trip approximately $60). We promise an efficient and convenient service process to minimize your waiting time as much as possible.To safeguard your rights, please be aware that:
- The above free maintenance and repair services are only applicable to products purchased through official Luslumin channels.
- Choosing a non-Luslumin factory for jewelry repairs may void our warranty services. Therefore, we recommend that you directly contact our customer service team for professional repair and maintenance advice.
To maintain the long-lasting brilliance of your jewelry, it is recommended to remove it during sports activities, swimming, heavy physical labor, or household chores. Removing it timely can effectively protect the jewelry from damage.
The maintenance of laboratory-grown gemstones is the same as natural gemstones. It is recommended to gently clean them with mild soapy water and a soft brush on a daily basis, followed by rinsing with pure water and patting dry with a soft cloth. Avoid contact with chemicals such as cosmetics and perfumes, and it is advisable to wear them after applying makeup. It's best to remove them during vigorous exercise or household chores to prevent scratches. To prevent scratching, gemstone jewelry should be stored separately in soft cloth bags or dedicated boxes.
Despite being precious, precious metals are not completely scratch-resistant. Especially for rings, they may develop minor scratches due to direct contact with hand movements, friction with clothing, bedding, towels, or even seat belts. When handling hard objects such as leather, wood, or plastic, please be careful to avoid damaging the surface of the ring.
A simple method to check the stability of gemstone settings is to lightly tap the inner circle of the ring against your ear. If you hear a faint rattling sound, it indicates that the gemstone may be loose and should be promptly sent for reinforcement. Special note: Some special cuts such as square princess cuts are designed to be slightly loose to protect the pointed corners from pressure.
We provide a comprehensive range of professional services including ring resizing, polishing and refurbishment, and main stone reinforcement. For more details on exclusive Luslumin services, please visit our service guide page.
It is recommended to regularly wipe laboratory-grown diamonds gently with a soft dry cloth. For deep cleaning, immerse the jewelry in warm water with a small amount of mild detergent, then gently brush with a soft-bristled baby toothbrush and thoroughly rinse clean. Finally, pat dry with a lint-free cloth to remove any remaining moisture.
To prevent scratches, it is advisable to store laboratory-grown diamond jewelry separately to ensure each piece remains flawless.