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Oval|Lab Grown|IGI

6.40ct D FL Oval Lab Grown Diamond

ID • D/FL • IGI LG768629380

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG768629380

Diamond specifications and retailer prices

From £16,566 GBP
$22,196 USD
As of October 31, 2026
Save £25,617 GBP (61%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £42,182 GBP at Yorxs · As of October 31, 2026
View at Yorxs

About this 6.4ct lab-grown oval diamond

This 6.4ct 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 LG768629380 or 768629380. Listed at 11 retailers as of October 31, 2026, with prices from £16,566 to £42,182, a £25,617 spread on the same certified stone. Yorxs lists it at £42,182. 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

6.40
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.2°
Pavilion angle39.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG768629380
Dimensions15.11 × 10.48 × 6.45 mm
L/W Ratio1.44
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
15.11 mm10.48 mm6.40 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG768629380
Side View
Table 59.0%Crown 34.2°Girdle: STK-THKPavilion 39.9°Culet: NoneDepth 61.5%

Caratlytics Score

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

Price History

Last verified: Oct 31
Current: £34,586 GBP|Low: £15,179 GBP|High: £69,355 GBP|Avg: £30,565 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 12£16,566 GBP
Retailer 6£16,733 GBP
Retailer 2£17,178 GBP
Retailer 10£18,269 GBP
Retailer 8£21,497 GBP
Retailer 4£23,176 GBP
Retailer 5£26,868 GBP
Retailer 7£27,778 GBP
Retailer 9£28,166 GBP
Retailer 1£34,586 GBP
Yorxs£42,182 GBP
Retailer 3£53,991 GBP
Retailer 11£69,355 GBP

29 data points across 13 retailers

11 retailers£16,566 GBP to £42,182 GBP

B+
Cheapest Retailer
-
£16,566 GBP
$22,196 USD
B+
Retailer 2
-
£16,733 GBP
$22,420 USD
View
B+
Retailer 3
-
£18,269 GBP
$24,478 USD
View
B+
Retailer 4
-
£21,497 GBP
$28,804 USD
View
B+
Retailer 5
-
£26,868 GBP
View
B+
Retailer 6
-
£27,778 GBP
$37,220 USD
View
B
Retailer 7
-
£28,166 GBP
$37,739 USD
View
B
Retailer 8
-
£34,586 GBP
View
Most Expensive
B
Yorxs
527156209 · Oct 31
£42,182 GBP
€53,828 EUR
View
8 more retailers have this diamond
Prices start from £16,566 GBPSave up to £25,617 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+
6.40ct Oval
£16,566 GBP