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Round|Lab Grown|GIA

5.99ct D FL Round Lab Grown Diamond

EX • D/FL • GIA 6515898090

Certificate GIA 6515898090

Diamond specifications and retailer prices

From £23,092 GBP
$30,941 USD
As of October 31, 2026
Save £16,486 GBP (42%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £39,578 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 5.99ct lab-grown round diamond

This 5.99ct 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 6515898090. Listed at 11 retailers as of October 29, 2026, with prices from £23,092 to £39,578, a £16,486 spread on the same certified stone. MOH London lists it at £39,578. 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

5.99
Carat
D
Colour
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.8°
OriginLab Grown
Grading LabGIA
CertificateGIA 6515898090
Dimensions11.62 × 11.55 × 7.21 mm
L/W Ratio1.01
Culet sizeNone
Top View
11.62 mm11.55 mm5.99 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6515898090
Side View
Table 56.0%Crown 35.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.3%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: £39,578 GBP|Low: £18,830 GBP|High: £98,351 GBP|Avg: £41,606 GBP|-6.7%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 1, 2026
Retailer 6£18,830 GBP
Retailer 11£23,092 GBP
Retailer 10£23,183 GBP
Retailer 7£27,396 GBP
Retailer 2£31,641 GBP
Retailer 5£32,421 GBP
Retailer 9£35,750 GBP
MOH London£39,578 GBP
Retailer 4£53,837 GBP
Retailer 8£66,162 GBP
Retailer 3£88,516 GBP

28 data points across 11 retailers

11 retailers£23,092 GBP to £39,578 GBP

Retailer 1
-
£18,830 GBP
$25,230 USD
Price last confirmed 14 days ago
B+
Retailer 2
-
£23,092 GBP
$30,941 USD
View
B+
Retailer 3
-
£23,183 GBP
$31,063 USD
View
B+
Retailer 4
-
£27,396 GBP
$36,708 USD
View
B+
Retailer 5
-
£31,641 GBP
View
B+
Retailer 6
-
£32,421 GBP
$43,440 USD
View
B
Retailer 7
-
£35,750 GBP
$47,901 USD
View
Most Expensive
B
MOH London
6515898090 · Oct 29
£39,578 GBP
View
7 more retailers have this diamond
Prices start from £23,092 GBPSave up to £16,486 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.

B+
5.99ct Round
£23,092 GBP