CaratHunter
Plans
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 £10,105 GBP
$13,539 USD
As of November 1, 2026
Save £35,674 GBP (78%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £45,778 GBP at With Clarity · As of October 31, 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 31, 2026, with prices from £10,105 to £45,778, a £35,674 spread on the same certified stone. With Clarity lists it at £45,778. 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
Colour
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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £17,648 GBP|Low: £9,802 GBP|High: £44,863 GBP|Avg: £20,609 GBP
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
With Clarity
November 1, 2026
Retailer 6£10,105 GBP
Retailer 9£10,876 GBP
Retailer 5£13,527 GBP
Retailer 2£13,649 GBP
Retailer 1£17,648 GBP
Retailer 4£18,024 GBP
Retailer 7£18,873 GBP
Retailer 3£19,773 GBP
Retailer 8£31,591 GBP
With Clarity£44,863 GBP

40 data points across 10 retailers

10 retailers£10,105 GBP to £45,778 GBP

A
Cheapest Retailer
-
£10,105 GBP
$13,539 USD
A
Retailer 2
-
£10,876 GBP
$14,573 USD
View
Retailer 3
-
£13,527 GBP
$18,125 USD
View
Price last confirmed 14 days ago
A
Retailer 4
-
£13,649 GBP
View
B+
Retailer 5
-
£17,648 GBP
View
B+
Retailer 6
-
£18,024 GBP
$24,150 USD
View
B+
Retailer 7
-
£18,873 GBP
$25,288 USD
View
B+
Retailer 8
-
£19,773 GBP
€25,232 EUR
View
B
Retailer 9
-
£31,591 GBP
$42,329 USD
View
Most Expensive
B
With Clarity
2538403883 · Oct 31
£45,778 GBP
$61,338 USD
View
9 more retailers have this diamond
Prices start from £10,105 GBPSave up to £35,674 GBP

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
£10,105 GBP