Large diamonds are a symbol of luxury and grandeur, but what exactly is considered “large” when it comes to diamonds? While there’s no strict definition, diamonds weighing 2 carats or more are generally considered large. As carat weight increases, so does the diamond’s face-up size, which makes these stones eye-catching and impressive. However, achieving maximum size without compromising quality has traditionally come with an overwhelming price tag.
Enter lab-grown diamonds, which offer a more affordable way to own stunning, larger stones with all the brilliance and beauty of their natural counterparts.
Lab diamonds make it possible to prioritize size and quality simultaneously, but choosing the right one requires careful consideration of factors like cut, color, clarity, and certification. In this guide, we’ll provide expert tips to help you find the perfect large lab-grown diamond and highlight the best places to buy these exceptional stones.
Understanding Lab Diamonds
Lab-grown diamonds are real diamonds, created in a laboratory using advanced technology that mimics the natural diamond formation process. These diamonds have the same chemical, physical, and optical properties as natural diamonds, making them indistinguishable to the naked eye.
Why Lab Diamonds Are Ideal for Larger Sizes
- Affordability: Lab diamonds cost up to 40-70% less than natural diamonds of similar size and quality. This allows you to prioritize both size and precision within your budget.
- Sustainability: They offer a more eco-conscious choice, as their production typically requires less environmental disruption compared to mining.
- Availability: Larger lab-grown diamonds are more accessible, with fewer limitations on size and carat weight.
Choosing a lab-grown diamond not only makes a bold statement but also ensures you can enjoy maximum size and quality without the excessive cost of natural diamonds.
A 5.13 ct D VVS2 Round Cut Precision Lab Grown Diamond from Whiteflash
Edge to edge light return is vital in making the diamond appear larger, so make sure you don’t sacrifice cut quality. For the best quality lab diamonds consider Whiteflash, other options include Brilliant Earth and James Allen.
Tips for Choosing Large Lab Diamonds Without Compromising on Quality
Prioritize Cut Quality
Cut is the most important factor in maximizing a diamond’s brilliance and sparkle, especially for larger stones. A poorly cut diamond will appear dull, no matter its size. Opt for diamonds with a super-ideal cut and a certification from a reputable lab like GIA, IGI, or GCAL. This ensures superior light performance, which is particularly critical for large stones that draw more attention.
Focus on Eye-Clean Clarity
While clarity is less of a concern with lab-grown diamonds, some stones—particularly those created using the CVD process—may have transparency issues or inclusions that affect their appearance. Always prioritize eye-clean clarity, where inclusions aren’t visible to the naked eye.
To avoid surprises, choose a retailer that provides high-definition images or videos of the diamond. Never buy a diamond blindly, as it’s the only way to ensure you’re getting a stone with no visible flaws.
IGI Lab-Grown 20.12 Carat Round Diamond from James Allen
Choose H or Higher Color Grade
Larger diamonds reveal more color, so choosing a higher color grade ensures a bright, white appearance. A grade of H or above strikes a balance between value and visual appeal. Be cautious of subtle color nuances, which are more common in lab diamonds, and rely on HD visuals for accurate evaluation.
Shape Considerations
The most popular shape for large lab-grown diamonds is round, particularly for engagement rings, thanks to its unmatched brilliance and timeless appeal. Oval diamonds are a strong second choice, especially for pendants, as their elongated shape creates the illusion of greater size. Other shapes, like pear and marquise, can also maximize face-up size per carat for buyers prioritizing impact.
Pricing in a Volatile Market
Lab-grown diamond prices have fluctuated significantly in recent years due to increased production and demand. Currently, the market remains volatile, with prices continuing to adjust. This unpredictability can be an opportunity for buyers to find excellent value, but it’s crucial to work with retailers who provide fair and transparent pricing.
Where to Buy Large Lab Diamonds
1. Whiteflash: Precision Lab Diamonds
For buyers seeking the best in quality, Whiteflash’s Precision Lab diamonds are unmatched. These diamonds are cut to super-ideal standards, ensuring maximum brilliance and light performance. Whiteflash also provides detailed light performance imaging and high-definition videos, making it easy to evaluate each stone. If precision and transparency are your priorities, Whiteflash is a top choice. Explore their collection here.
2. James Allen: True Hearts™ Lab Diamonds
James Allen offers a wide selection of large lab diamonds, including their True Hearts™ collection. While not as strict as Whiteflash in terms of cut parameters, these diamonds still provide good light performance. James Allen also excels in customer experience with 360° HD videos, which allow you to inspect the diamond’s clarity and color before purchasing.
3. Brilliant Earth
Known for its focus on ethical and sustainable sourcing, Brilliant Earth provides a large inventory of lab diamonds. While they offer some transparency tools, concerns about inconsistent customer service can make the buying experience less reliable. Still, they remain a decent option for buyers prioritizing sustainability.
4. Ritani
Ritani offers affordable lab diamonds, but recent declines in quality and customer service raise concerns. Their inventory lacks the precision and performance found at higher-end retailers, and many customers have noted unresponsive support. Ritani may not be the best option for buyers prioritizing reliability.
5. Blue Nile
Blue Nile caters to budget-conscious buyers seeking large lab diamonds. However, their inventory lacks super-ideal cut options, and they provide less detailed imaging compared to competitors. While pricing is competitive, buyers looking for high-end precision should consider alternatives.
Large lab-grown diamonds offer the perfect opportunity to achieve maximum size without breaking the bank, but choosing the right stone requires careful consideration of quality. Prioritize a super-ideal cut, as it ensures unmatched brilliance and light performance—especially critical for larger diamonds. Opt for H color or higher for a bright, white appearance, and focus on eye-clean clarity to avoid visible inclusions. When shopping, rely on retailers that provide HD images or videos to ensure you’re getting the quality you expect.
In today’s volatile market, lab diamonds remain a cost-effective way to enjoy impressive carat weights. However, working with a reputable retailer is essential to finding the perfect diamond. For super-ideal precision and transparency, Whiteflash Precision Lab Diamonds lead the way. James Allen and Brilliant Earth also offer solid options, though they may lack the same level of exacting standards.
Ultimately, by focusing on cut, clarity, color, and trusted certifications, you can confidently choose a large lab diamond that balances size, quality, and value—creating a dazzling piece that will shine for years to come.
