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Oval|Lab Grown|IGI

6.51ct D FL Oval Lab Grown Diamond

ID • D/FL • IGI LG787620658

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG787620658

Diamond specifications and retailer prices

From £16,509 GBP
$22,120 USD
As of October 31, 2026
Save £26,398 GBP (62%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £42,907 GBP at Yorxs · As of October 31, 2026
View at Yorxs

About this 6.51ct lab-grown oval diamond

This 6.51ct lab-grown oval 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 IGI LG787620658 or 787620658. Listed at 12 retailers as of October 31, 2026, with prices from £16,509 to £42,907, a £26,398 spread on the same certified stone. Yorxs lists it at £42,907. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.1°
Pavilion angle39.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG787620658
Dimensions15.17 × 10.46 × 6.53 mm
L/W Ratio1.45
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
15.17 mm10.46 mm6.51 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG787620658
Side View
Table 57.0%Crown 37.1°Girdle: MED-STKPavilion 39.2°Culet: NoneDepth 62.4%

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: £35,175 GBP|Low: £16,509 GBP|High: £70,547 GBP|Avg: £31,017 GBP|-0.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Yorxs
October 31, 2026
Retailer 2£16,509 GBP
Retailer 6£16,666 GBP
Retailer 12£17,473 GBP
Retailer 9£18,577 GBP
Retailer 8£21,863 GBP
Retailer 4£23,606 GBP
Retailer 5£27,329 GBP
Retailer 7£28,256 GBP
Retailer 10£28,646 GBP
Retailer 1£35,175 GBP
Yorxs£42,907 GBP
Retailer 3£54,737 GBP
Retailer 11£70,547 GBP

22 data points across 13 retailers

12 retailers£16,509 GBP to £42,907 GBP

B+
Cheapest Retailer
-
£16,509 GBP
$22,120 USD
B+
Retailer 2
-
£16,666 GBP
$22,330 USD
View
B+
Retailer 3
-
£18,577 GBP
$24,891 USD
View
B+
Retailer 4
-
£21,863 GBP
$29,294 USD
View
Retailer 5
-
£27,329 GBP
View
Price last confirmed 7 days ago
B+
Retailer 6
-
£28,256 GBP
$37,860 USD
View
B
Retailer 7
-
£28,646 GBP
$38,382 USD
View
Retailer 8
-
£30,562 GBP
$40,950 USD
View
Price last confirmed 32 days ago
B
Retailer 9
-
£35,175 GBP
View
Most Expensive
B
Yorxs
528330983 · Oct 31
£42,907 GBP
€54,753 EUR
View
9 more retailers have this diamond
Prices start from £16,509 GBPSave up to £26,398 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+
6.51ct Oval
£16,509 GBP