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Oval|Lab Grown|IGI

11.25ct H VS1 Oval Lab Grown Diamond

EX • H/VS1 • IGI LG598316444

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG598316444

Diamond specifications and retailer prices

From £1,410 GBP
$1,889 USD
As of October 31, 2026
Save £10,405 GBP (88%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £11,814 GBP at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 11.25ct lab-grown oval diamond

This 11.25ct lab-grown oval sits in the over five carat band, graded H colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG598316444 or 598316444. Listed at 12 retailers as of October 31, 2026, with prices from £1,410 to £11,814, a £10,405 spread on the same certified stone. Brilliant Earth lists it at £11,814. 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

11.25
Carat
H
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.1°
Pavilion angle39.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG598316444
Dimensions18.53 × 12.54 × 7.73 mm
L/W Ratio1.48
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
18.53 mm12.54 mm11.25 ctH / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG598316444
Side View
Table 59.0%Crown 37.1°Girdle: MED-STKPavilion 39.7°Culet: NoneDepth 61.6%

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: Oct 31
Current: £11,814 GBP|Low: £1,410 GBP|High: £11,814 GBP|Avg: £3,628 GBP
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 1, 2026
Retailer 4£1,410 GBP
Retailer 11£1,560 GBP
Retailer 9£2,014 GBP
Retailer 12£2,049 GBP
Retailer 6£2,382 GBP
Retailer 10£2,472 GBP
Retailer 2£2,932 GBP
Retailer 8£3,500 GBP
Retailer 3£3,916 GBP
Retailer 5£4,172 GBP
Retailer 7£7,657 GBP
Brilliant Earth£11,814 GBP

31 data points across 12 retailers

12 retailers£1,410 GBP to £11,814 GBP

A
Cheapest Retailer
-
£1,410 GBP
$1,889 USD
Final sale: no returns
A
Retailer 2
-
£1,560 GBP
$2,090 USD
View
B+
Retailer 3
-
£2,014 GBP
$2,699 USD
View
A
Retailer 4
-
£2,049 GBP
$2,745 USD
View
A
Retailer 5
-
£2,382 GBP
€3,039 EUR
View
A
Retailer 6
-
£2,472 GBP
$3,312 USD
View
B+
Retailer 7
-
£2,932 GBP
A$6,044 AUD
View
B+
Retailer 8
-
£3,500 GBP
$4,689 USD
View
B+
Retailer 9
-
£3,916 GBP
$5,247 USD
View
B+
Retailer 10
-
£4,172 GBP
$5,590 USD
View
B
Retailer 11
-
£7,657 GBP
$10,260 USD
View
Most Expensive
B
Brilliant Earth
17140106A · Oct 31
£11,814 GBP
$15,830 USD
View
11 more retailers have this diamond
Prices start from £1,410 GBPSave up to £10,405 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
11.25ct Oval
£1,410 GBP