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Oval|Lab Grown|IGI

4.00ct D IF Oval Lab Grown Diamond

EX • D/IF • IGI LG683578081

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG683578081

Diamond specifications and retailer prices

From £2,586 GBP
$3,465 USD
As of October 31, 2026
Save £13,654 GBP (84%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £16,240 GBP at Mervis Diamond Importers · As of October 31, 2026
View at Mervis Diamond Importers

About this 4ct lab-grown oval diamond

This 4ct lab-grown oval sits in the three to five carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG683578081 or 683578081. Listed at 22 retailers as of October 31, 2026, with prices from £2,586 to £16,240, a £13,654 spread on the same certified stone. Mervis Diamond Importers lists it at £16,240. 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

4.00
Carat
D
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG683578081
Dimensions12.76 × 8.97 × 5.58 mm
L/W Ratio1.42
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
12.76 mm8.97 mm4.00 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG683578081
Side View
Table 59.0%Crown 36°Girdle: MED-STKPavilion 40.2°Culet: NoneDepth 62.2%

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 31
Current: £16,240 GBP|Low: £2,217 GBP|High: £16,240 GBP|Avg: £5,658 GBP
Mervis Diamond Importers
Retailer 2
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Retailer 20
October 31, 2026
Retailer 3£2,217 GBP
Retailer 6£2,512 GBP
Retailer 8£2,586 GBP
Retailer 9£2,679 GBP
Retailer 7£2,736 GBP
Retailer 18£2,795 GBP
Retailer 12£3,002 GBP
Retailer 17£3,770 GBP
Retailer 2£3,947 GBP
Retailer 4£4,161 GBP
Retailer 10£4,516 GBP
Retailer 16£4,575 GBP
Retailer 13£6,292 GBP
Retailer 15£6,388 GBP
Retailer 20£6,714 GBP
Retailer 14£7,534 GBP
Retailer 11£8,503 GBP
Retailer 5£10,011 GBP
Retailer 19£14,650 GBP
Mervis Diamond Importers£16,240 GBP

42 data points across 20 retailers

22 retailers£2,586 GBP to £16,240 GBP

A
Cheapest Retailer
-
£2,586 GBP
$3,465 USD
Final sale: no returns
Retailer 2
-
£2,679 GBP
$3,589 USD
View
Price last confirmed 28 days ago
A
Retailer 3
-
£2,736 GBP
$3,666 USD
View
A
Retailer 4
-
£2,795 GBP
$3,745 USD
View
A
Retailer 5
-
£3,002 GBP
$4,022 USD
View
Retailer 6
-
£3,694 GBP
$4,950 USD
View
Price last confirmed 23 days ago
A
Retailer 7
-
£3,770 GBP
$5,051 USD
View
A
Retailer 8
-
£3,947 GBP
View
A
Retailer 9
-
£4,161 GBP
$5,575 USD
View
B+
Retailer 10
-
£4,516 GBP
View
A
Retailer 11
-
£4,575 GBP
$6,130 USD
View
B+
Retailer 12
-
£6,292 GBP
ZAR 136,198 ZAR
View
Retailer 13
-
£6,388 GBP
A$13,169 AUD
View
Price last confirmed 8 days ago
B+
Retailer 14
-
£6,714 GBP
$8,996 USD
View
B
Retailer 15
-
£7,374 GBP
$9,881 USD
View
B+
Retailer 16
-
£7,534 GBP
View
B
Retailer 17
-
£8,503 GBP
$11,393 USD
View
B
Retailer 18
-
£10,011 GBP
$13,414 USD
View
B
Retailer 19
-
£10,385 GBP
$13,914 USD
View
B
Retailer 20
-
£14,650 GBP
$19,630 USD
View
B
Retailer 21
-
£15,889 GBP
$21,290 USD
View
Most Expensive
B
Mervis Diamond Importers
1985409298 · Oct 31
£16,240 GBP
$21,760 USD
View
21 more retailers have this diamond
Prices start from £2,586 GBPSave up to £13,654 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
4.00ct Oval
£2,586 GBP