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Oval|Lab Grown|IGI

1.23ct E IF Oval Lab Grown Diamond

EX • E/IF • IGI LG727563477

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG727563477

Diamond specifications and retailer prices

From £144 GBP
$192 USD
As of October 29, 2026
Save £1,534 GBP (91%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: £1,678 GBP at Queensmith · As of October 27, 2026
View at Queensmith

About this 1.23ct lab-grown oval diamond

This 1.23ct lab-grown oval sits in the classic one-carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG727563477 or 727563477. Listed at 24 retailers as of October 27, 2026, with prices from £144 to £1,678, a £1,534 spread on the same certified stone. Queensmith lists it at £1,678. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.23
Carat
E
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.5°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG727563477
Dimensions8.86 × 6.08 × 3.74 mm
L/W Ratio1.46
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
8.86 mm6.08 mm1.23 ctE / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG727563477
Side View
Table 55.0%Crown 33.5°Girdle: THN-MEDPavilion 40.7°Culet: NoneDepth 61.5%

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: Oct 29
Current: £364 GBP|Low: £144 GBP|High: £1,434 GBP|Avg: £560 GBP|-11.5%
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October 29, 2026
Retailer 7£144 GBP
Retailer 4£161 GBP
Retailer 20£167 GBP
Retailer 10£179 GBP
Retailer 23£179 GBP
Retailer 17£210 GBP
Retailer 14£256 GBP
Retailer 9£279 GBP
Retailer 18£340 GBP
Retailer 22£364 GBP
Retailer 1£364 GBP
Retailer 21£466 GBP
Retailer 19£483 GBP
Retailer 3£577 GBP
Retailer 6£635 GBP
Retailer 13£765 GBP
Retailer 11£767 GBP
Retailer 8£795 GBP
Retailer 12£796 GBP
Retailer 2£878 GBP
Retailer 15£1,104 GBP
Retailer 5£1,389 GBP
Retailer 16£1,434 GBP

33 data points across 23 retailers

24 retailers£144 GBP to £1,678 GBP

A
Cheapest Retailer
-
£144 GBP
$192 USD
A
Retailer 2
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£161 GBP
$214 USD
View
Final sale: no returns
A
Retailer 3
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£167 GBP
$223 USD
View
A
Retailer 4
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£179 GBP
$238 USD
View
A
Retailer 5
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£179 GBP
$238 USD
View
A
Retailer 6
-
£210 GBP
View
B+
Retailer 7
-
£256 GBP
$341 USD
View
A
Retailer 8
-
£279 GBP
HK$2,900 HKD
View
A
Retailer 9
-
£340 GBP
ZAR 7,305 ZAR
View
A
Retailer 10
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£364 GBP
$485 USD
View
A
Retailer 11
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£364 GBP
View
A
Retailer 12
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£466 GBP
$620 USD
View
A
Retailer 13
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£483 GBP
A$990 AUD
View
B+
Retailer 14
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£577 GBP
$769 USD
View
B+
Retailer 15
-
£635 GBP
$846 USD
View
B+
Retailer 16
-
£765 GBP
$1,018 USD
View
B+
Retailer 17
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£767 GBP
View
B+
Retailer 18
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£795 GBP
SGD 1,430 SGD
View
B+
Retailer 19
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£796 GBP
View
B
Retailer 20
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£878 GBP
$1,170 USD
View
Retailer 21
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£1,104 GBP
$1,470 USD
View
Price last confirmed 22 days ago
B
Retailer 22
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£1,389 GBP
$1,850 USD
View
B
Retailer 23
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£1,434 GBP
$1,910 USD
View
Most Expensive
B
Queensmith
LG727563477 · Oct 27
£1,678 GBP
View
23 more retailers have this diamond
Prices start from £144 GBPSave up to £1,534 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
1.23ct Oval
£144 GBP