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Oval|Lab Grown|IGI

1.01ct D SI1 Oval Lab Grown Diamond

EX • D/SI1 • IGI LG557240926

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG557240926

Diamond specifications and retailer prices

From £112 GBP
As of November 3, 2026
Save £361 GBP (76%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £655 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1.01ct lab-grown oval diamond

This 1.01ct lab-grown oval sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG557240926 or 557240926. Listed at 13 retailers as of November 3, 2026, with a 322% 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

1.01
Carat
D
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG557240926
Dimensions8.04 × 5.74 × 3.63 mm
L/W Ratio1.40
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
8.04 mm5.74 mm1.01 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG557240926
Side View
Table 59.5%Crown 35.5°Girdle: STK-THKPavilion 41.6°Culet: NoneDepth 63.2%

Caratlytics Score

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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: Nov 3
Current: £655 GBP|Low: £108 GBP|High: £658 GBP|Avg: £282 GBP|-0.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 5, 2026
Retailer 9£112 GBP
Retailer 3£130 GBP
Retailer 10£139 GBP
Retailer 13£139 GBP
Retailer 2£165 GBP
Retailer 6£239 GBP
Retailer 5£240 GBP
Retailer 11£256 GBP
Retailer 7£351 GBP
Retailer 4£377 GBP
Retailer 12£448 GBP
Retailer 8£473 GBP
MOH London£655 GBP

44 data points across 13 retailers

13 retailers£112 GBP to £473 GBP

A
Cheapest Retailer
-
£112 GBP
A
Retailer 2
-
£130 GBP
View
Retailer 3
-
£139 GBP
View
Price last confirmed 12 days ago
A
Retailer 4
-
£139 GBP
View
A
Retailer 5
-
£165 GBP
View
A
Retailer 6
-
£239 GBP
View
A
Retailer 7
-
£240 GBP
View
A
Retailer 8
-
£256 GBP
View
B+
Retailer 9
-
£351 GBP
View
B+
Retailer 10
-
£377 GBP
View
B+
Retailer 11
-
£448 GBP
View
B
Retailer 12
-
£473 GBP
View
Most Expensive
MOH London
LG557240926 · Oct 29
£655 GBP
View
Price last confirmed 8 days ago
12 more retailers have this diamond
Prices start from £112 GBPSave up to £361 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
1.01ct Oval
£112 GBP