Online lab grown diamond retailers can differ in their product selection, certification information, customization services, return policies, shipping options, and shopping experience. Understanding those differences can help buyers know what information to review when researching an engagement ring online.
This article provides an informational overview of five online retailers offering lab grown diamonds and engagement rings. The retailers are presented without ranking or endorsement, with a focus on publicly available information about their products, policies, and shopping features.
Overview of the Five Lab Grown Diamond Retailers (TL;DR)
| Online retailer | Certification Information | Return Policy | Notable Feature | Prices on Specific Date | Trustpilot Rating |
| Loose Grown Diamond | IGI, GIA, GCAL | 30-day returns | Direct-from-manufacturer pricing, custom jewelry, 24/7 support | Round Cut Diamond, 5.00 carat,D, VS1, USD $1,828 on August 21, 2026 | 5/5 (3,204 reviews) |
| Clean Origin | Graded by gemological laboratories based on the 4 Cs | 60-day returns | Long return window and free return shipping in the U.S. | Round Cut Diamond, 5.08 carat, D, VS1, USD $2,175 on August 21, 2026 | 4.2/5 (299 reviews) |
| Brilliance | Certification type filter available | 30-day returns | Strong search depth, lifetime warranty positioning, free shipping tiers | Round Cut Diamond, 5.00 carat, D, VS1, USD $4,208 on August 21, 2026 | 4.9/5 (4,715 reviews) |
| With Clarity | IGI certificate verification referenced | 30-day returns | Home Preview concept and hybrid showroom support | Round Cut Diamond, 5.01 carat, D, VS1, USD $5,860 on August 21, 2026 | 4/5 (37 reviews) |
| Ritani | Respected third-party grading certificate, free appraisal | 30-day returns | Transparent pricing language and in-person preview option | Round Cut Diamond, 5.02 carat, D, VS1, USD $2,122 on August 21, 2026 | 3.5/5 (590 reviews) |
Note: Product availability, certification information, return policies, shipping terms, and other retailer policies may change over time. The information below reflects publicly available details reviewed as of August 21, 2026. Buyers should confirm the current terms and product information directly with the retailer before making a purchase.
Key Factors That Can Vary Across Online Lab Grown Diamond Retailers
Policies and shopping processes can differ between online lab grown diamond retailers. Before purchasing, buyers may want to review details such as:
- Return periods: Return windows vary by retailer, and some policies calculate the return period from the shipment date rather than the delivery date.
- Custom and resized jewelry: Custom-made, personalized, or resized pieces may have different return or exchange conditions from standard items.
- Certification information: Certification details can differ depending on the retailer, diamond, or type of finished jewelry being purchased.
- Shipping and service policies: Delivery procedures, resizing services, repairs, and customer support options vary between retailers.
- Pricing: Prices can vary even among diamonds with broadly similar characteristics, so specifications and included services should be reviewed alongside the listed price.
Loose Grown Diamond
Loose Grown Diamond offers certified lab grown diamonds across a range of shapes, along with custom jewelry services and direct-from-manufacturer pricing. Its listed inventory includes diamonds certified by IGI, GIA, and GCAL, while the retailer also provides global shipping and 24/7 customer support.
Key Features
- Certification information: Listed diamonds may include grading reports from IGI, GIA, and GCAL.
- Diamond selection: The inventory includes standard, fancy, and custom diamond shapes.
- Custom jewelry: Custom jewelry services include 3D CAD renderings and revision options.
- Customer support: Support is available through phone, email, and live chat.
- Pricing model: The retailer describes its pricing approach as direct-from-manufacturer.
Pricing
Round Cut Diamond, 5.00 carat, Price (USD): $1,828. Reference date: August 21, 2026.
| Pricing example | Details |
| Round Cut Diamond | 5.00 carat, USD $1,828, listed in USD, direct-from-manufacturer pricing, promotions may apply to eligible items only, wire/Wise/crypto payments qualify for 2% discount. |
Clean Origin
Clean Origin offers lab grown diamonds, engagement rings, wedding rings, fine jewelry, and custom engagement rings. Its policies include a 60-day return window and free shipping both ways within the U.S., which may be relevant to buyers who place greater importance on return flexibility.
Key Features
- Product selection: Includes loose lab grown diamonds, engagement rings, wedding rings, fine jewelry, and custom engagement rings.
- Return policy: Eligible purchases may be returned within 60 days, subject to the retailer’s current conditions.
- Shipping: Shipping and return-shipping options are available for eligible U.S. orders.
- Shopping support: Buyers can schedule virtual appointments for assistance during the selection process.
Pricing
Round Cut Diamond, 5.08 carat, D color, VS1 clarity, Price (USD): $2,175. Reference date: August 21, 2026.
| Pricing example | Details |
| Round Cut Diamond | 5.08 carat, D color, VS1 clarity, USD $2,175, prices shown directly on listings, promotional pricing may appear during sales, limited-time offers with stated terms. |
Brilliance
Brilliance offers lab grown diamonds, engagement rings, and a ring-building process that allows buyers to select a diamond and setting separately. Its website also provides diamond search filters and shipping options for eligible purchases.
Key Features
- Diamond search: Listings can be filtered using characteristics such as carat, color, clarity, cut, and shape.
- Ring selection: Buyers can select a loose diamond and pair it with an available ring setting.
- Shipping: Shipping conditions vary depending on the order, destination, and applicable delivery requirements.
- Warranty information: Eligible purchases may be covered under the retailer’s stated warranty terms.
Pricing
Round Cut Diamond, 5.00 carat, D color, VS1 clarity, Price (USD): $4,208. Reference date: August 21, 2026.
| Pricing example | Details |
| Round Cut Diamond | 5.00 carat, D color, VS1 clarity, USD $4,208, USD-based pricing context, low price guarantee terms apply, discounts and coupon codes cannot be combined with the guarantee. |
With Clarity
With Clarity offers lab grown diamonds and jewelry through online shopping, showroom appointments, virtual consultations, and its Home Preview program. Its product range includes custom rings, preset rings, wedding bands, and other jewelry.
Key Features
- Home Preview: Eligible shoppers can preview selected ring styles before completing a purchase.
- Shopping options: Showroom appointments and virtual consultations are available as part of the buying process.
- Product selection: Includes custom rings, preset rings, wedding bands, and other jewelry.
- Resizing and shipping: Resizing and insured shipping options are available for eligible purchases, subject to the retailer’s current terms.
Pricing
Round Cut Diamond, 5.01 carat, D color, VS1 clarity, Price (USD): $5,860. Reference date: August 21, 2026.
| Pricing example | Details |
| Round Cut Diamond | 5.01 carat, D color, VS1 clarity, USD $5,860, pricing shown clearly during browsing and checkout, financing explained separately, many pieces are made to order. |
Ritani
Ritani offers lab grown diamonds, engagement rings, wedding rings, jewelry, and custom ring design services. Its shopping process includes online browsing as well as in-person preview options for eligible products and locations.
Key Features
- In-person preview: Eligible diamonds or jewelry may be available for in-person viewing before purchase.
- Pricing information: Diamond listings include pricing information, while eligible purchases may also include appraisal documentation.
- Product selection: Includes loose lab grown diamonds, engagement rings, wedding rings, jewelry, and custom ring services.
- Returns and resizing: Return shipping and resizing options are available for eligible purchases, subject to the retailer’s current policies.
Pricing
Round Cut Diamond, 5.02 carat, D color, VS1 clarity, Price (USD): $2,122. Reference date: August 21, 2026.
| Pricing example | Details |
| Round Cut Diamond | 5.02 carat, D color, VS1 clarity, USD $2,122; Ritani states it shows pricing and markups with no hidden fees; free appraisal referenced. |
Why the Retailer Experience Matters Beyond the Diamond
Lab grown diamonds with similar carat weight, color, clarity, and cut can still come with different purchasing experiences. Those differences often appear in areas surrounding the diamond itself, such as return policies, customization, resizing, shipping, consultation options, and how product information is presented.
This means the listed diamond specifications or price alone may not provide the full picture. Retailers can offer broadly similar stones while differing in the services, policies, and level of flexibility available before and after purchase. Understanding those differences can help buyers evaluate the overall buying experience alongside the diamond itself.