Round|Lab Grown|GIA

6.51ct D FL Round Lab Grown Diamond

EX • D/FL • GIA 2538403883

Certificate GIA 2538403883

Diamond specifications and retailer prices

From $13,539 USD
As of October 30, 2026
Save $47,799 USD (78%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $61,338 USD at With Clarity · As of October 30, 2026
View at With Clarity

About this 6.51ct lab-grown round diamond

This 6.51ct lab-grown round sits in the over five carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by GIA 2538403883. Listed at 10 retailers as of October 30, 2026, with prices from $13,539 to $61,338, a $47,799 spread on the same certified stone. With Clarity lists it at $61,338. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

6.51
Carat
D
Color
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.8°
OriginLab Grown
Grading LabGIA
CertificateGIA 2538403883
Dimensions11.88 × 11.83 × 7.44 mm
L/W Ratio1.00
Top View
11.88 mm11.83 mm6.51 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2538403883
Side View
Table 57.0%Crown 35.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $24,150 USD|Low: $13,134 USD|High: $60,111 USD|Avg: $27,674 USD
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
With Clarity
October 30, 2026
Retailer 6$13,539 USD
Retailer 9$14,573 USD
Retailer 5$18,125 USD
Retailer 2$18,288 USD
Retailer 3$23,773 USD
Retailer 1$24,150 USD
Retailer 7$25,288 USD
Retailer 4$26,568 USD
Retailer 8$42,329 USD
With Clarity$60,111 USD

38 data points across 10 retailers

10 retailers$13,539 USD to $61,338 USD

A
Cheapest Retailer
-
$13,539 USD
A
Retailer 2
-
$14,573 USD
View
Retailer 3
-
$18,125 USD
View
Price last confirmed 13 days ago
A
Retailer 4
-
$18,288 USD
£14,400 GBP
View
B+
Retailer 5
-
$23,773 USD
£18,719 GBP
View
B+
Retailer 6
-
$24,150 USD
View
B+
Retailer 7
-
$25,288 USD
View
B+
Retailer 8
-
$26,568 USD
€25,303 EUR
View
B
Retailer 9
-
$42,329 USD
View
Most Expensive
B
With Clarity
2538403883 · Oct 30
$61,338 USD
View
9 more retailers have this diamond
Prices start from $13,539 USDSave up to $47,799 USD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
6.51ct Round
$13,539 USD