60% Flat SALE across all products

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Check out these collections.

4 to 4.99 Carat

Emerald Cut Lab Grown Diamond - 4.51Carat G/VS2 (TV1050)
Emerald Cut Lab Grown Diamond - 4.51Carat G/VS2 (TV1050)
Save 69%

Emerald Cut Lab Grown Diamond - 4.51Carat G/VS2 (TV1050)

Regular price 1,556 467

Unit price
per 

Radiant Cut Lab Grown Diamond - 4.57CTW G/VS1 (TV462)
Radiant Cut Lab Grown Diamond - 4.57CTW G/VS1 (TV462)
Save 70%

Radiant Cut Lab Grown Diamond - 4.57CTW G/VS1 (TV462)

Regular price 1,760 528

Unit price
per 

Radiant Cut Lab Grown Diamond - 4.59CTW G/VVS2 (TV612)
Radiant Cut Lab Grown Diamond - 4.59CTW G/VVS2 (TV612)
Save 70%

Radiant Cut Lab Grown Diamond - 4.59CTW G/VVS2 (TV612)

Regular price 1,985 596

Unit price
per 

Wholesale Enquiries

We are manufacturers, exporters and suppliers for fine quality Raw diamonds, gemstones, gemstone beads, briolettes, cabochons, chips, sterling silver jewelry and handcrafted beaded jewelry. 

Please message us for any wholesale queries or customised orders. Keep seeing new additions every day.

At 4 to 4.99 carats, you're shopping for one of the largest diamonds a buyer can source, and GDBS handles that scale with individual grading rather than bulk listings.

  • Every stone graded on its own merit. Our 4 to 4.99 carat lab grown diamonds collection lists exact carat weight, color, and clarity for each emerald and radiant cut stone currently available, so a purchase this significant is backed by specifics, not a generic size chart.
  • Real savings at real scale. Regular prices are shown struck through against the sale price, with discounts landing around 69-70% off, which matters more at this carat weight than almost anywhere else in the catalog given how much natural stones of this size would cost.
  • A track record built over 11 years. GDBS has operated as a diamond and gemstone supplier for more than a decade, holding a 4.8 rating across 6,200-plus reviews and 24,500-plus completed sales, a history that carries more weight when the purchase does too.
  • Sourcing beyond what's listed. Diamonds at this weight are inherently scarce, so if the exact shape, color, or clarity you need isn't currently in stock, our wholesale enquiry channel is built for custom requests.
  • Guarded by clear policies. Free standard shipping and a defined return and exchange policy apply to every order, regardless of stone size or value.

A diamond this large deserves this much attention to detail. Review what's currently available and reach out if you're sourcing something specific.

  • Diamonds at this weight, lab grown or natural, are genuinely rare to produce and source, so this collection stays small by nature rather than by design. New stones are added as they become available, and our team can take custom sourcing requests if you have specific requirements.

  • A natural diamond in the 4 to 4.99 carat range with comparable color and clarity typically costs many times more than its lab grown counterpart, which is why this weight class has become realistic for buyers who wouldn't otherwise consider it. Every stone here shows both the regular and discounted price directly on the listing.

  • Current listings include emerald cut and radiant cut lab grown diamonds, each in the G color range with VS1 to VVS2 clarity. Availability shifts as stones sell and new ones are sourced, so it's worth checking back or contacting us directly for a specific shape.

  • Yes, though the setting matters more at this size than it does with smaller stones, since a 4 carat diamond needs a mount and prongs built to support its weight securely. Working with an experienced jeweler on the setting is worth the extra step for a stone this size.

  • Each product page states the specific carat weight, color grade, and clarity grade for that exact stone, and our team is available to walk through the details with you before checkout. Given the value involved, we'd recommend reaching out through our contact page with any questions before finalizing.

  • Orders in this collection are covered under our standard return and exchange policy, which outlines the timeframe and conditions for sending a stone back. You can review the full terms on our return and exchange page before purchasing.

  • Yes, this is exactly what our wholesale and custom sourcing service is for. Submit your shape, color, and clarity requirements through the wholesale enquiries page and our team will work to source it.