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Oval|Lab Grown|IGI

11.28ct G SI1 Oval Lab Grown Diamond

EX • G/SI1 • IGI LG567352420

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG567352420

Diamond specifications and retailer prices

From £2,306 GBP
$3,095 USD
As of November 2, 2026
Save £9,343 GBP (80%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £17,691 GBP at Do Amore Diamonds · As of November 2, 2026
View at Do Amore Diamonds

About this 11.28ct lab-grown oval diamond

This 11.28ct lab-grown oval sits in the over five carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG567352420 or 567352420. Listed at 13 retailers as of October 31, 2026, with a 405% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

11.28
Carat
G
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.5°
Pavilion angle39.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG567352420
Dimensions18.39 × 12.49 × 7.66 mm
L/W Ratio1.47
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
18.39 mm12.49 mm11.28 ctG / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG567352420
Side View
Table 59.0%Crown 38.5°Girdle: MED-THKPavilion 39.3°Culet: NoneDepth 61.3%

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: Nov 2
Current: £17,691 GBP|Low: £1,915 GBP|High: £17,691 GBP|Avg: £4,653 GBP|+55.8%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 3£1,915 GBP
Retailer 4£2,306 GBP
Retailer 6£2,984 GBP
Retailer 5£3,426 GBP
Retailer 12£3,783 GBP
Retailer 10£3,930 GBP
Retailer 8£4,115 GBP
Retailer 7£4,240 GBP
Retailer 2£4,313 GBP
Retailer 9£5,251 GBP
Retailer 11£11,649 GBP
Do Amore Diamonds£17,691 GBP

42 data points across 12 retailers

13 retailers£2,306 GBP to £11,649 GBP

Retailer 1
-
£1,915 GBP
$2,570 USD
Price last confirmed 22 days ago
Retailer 2
-
£2,242 GBP
$3,008 USD
View
Price last confirmed 14 days ago
B+
Retailer 3
-
£2,306 GBP
$3,095 USD
View
B
Retailer 4
-
£2,984 GBP
$4,005 USD
View
B+
Retailer 5
-
£3,083 GBP
$4,137 USD
View
B
Retailer 6
-
£3,783 GBP
$5,076 USD
View
B
Retailer 7
-
£3,930 GBP
HK$41,200 HKD
View
B
Retailer 8
-
£4,115 GBP
$5,522 USD
View
B
Retailer 9
-
£4,240 GBP
$5,690 USD
View
B
Retailer 10
-
£4,313 GBP
View
B
Retailer 11
-
£5,251 GBP
$7,047 USD
View
B
Retailer 12
-
£11,649 GBP
$15,632 USD
View
Most Expensive
Do Amore Diamonds
27-00B0CEB1C · Nov 2
£17,691 GBP
$23,740 USD
View
Price under review
12 more retailers have this diamond
Prices start from £2,306 GBPSave up to £9,343 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+
11.28ct Oval
£2,306 GBP