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Oval|Lab Grown|IGI

1.25ct D IF Oval Lab Grown Diamond

ID • D/IF • IGI LG729575934

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG729575934

Diamond specifications and retailer prices

From £418 GBP
$560 USD
As of November 1, 2026
Save £2,021 GBP (83%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £2,438 GBP at Brilliant Earth · As of November 2, 2026
View at Brilliant Earth

About this 1.25ct lab-grown oval diamond

This 1.25ct lab-grown oval sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG729575934 or 729575934. Listed at 22 retailers as of November 1, 2026, with prices from £418 to £2,438, a £2,021 spread on the same certified stone. Brilliant Earth lists it at £2,438. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.25
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.1°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG729575934
Dimensions8.51 × 6.09 × 3.78 mm
L/W Ratio1.40
Girdle conditionFaceted
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
8.51 mm6.09 mm1.25 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG729575934
Side View
Table 60.0%Crown 35.1°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.1%

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: Nov 1
Current: £2,438 GBP|Low: £418 GBP|High: £2,438 GBP|Avg: £1,081 GBP
Brilliant Earth
Retailer 2
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Retailer 22
November 3, 2026
Retailer 3£418 GBP
Retailer 11£468 GBP
Retailer 21£468 GBP
Retailer 8£517 GBP
Retailer 10£517 GBP
Retailer 22£619 GBP
Retailer 7£670 GBP
Retailer 4£686 GBP
Retailer 12£693 GBP
Retailer 18£788 GBP
Retailer 2£808 GBP
Retailer 16£893 GBP
Retailer 20£1,130 GBP
Retailer 13£1,177 GBP
Retailer 19£1,263 GBP
Retailer 5£1,362 GBP
Retailer 15£1,462 GBP
Retailer 9£1,639 GBP
Retailer 14£1,679 GBP
Retailer 6£1,747 GBP
Retailer 17£2,248 GBP
Brilliant Earth£2,438 GBP

18 data points across 22 retailers

22 retailers£418 GBP to £2,438 GBP

A
Cheapest Retailer
-
£418 GBP
$560 USD
A
Retailer 2
-
£468 GBP
$627 USD
View
Final sale: no returns
A
Retailer 3
-
£468 GBP
$627 USD
View
B+
Retailer 4
-
£517 GBP
$694 USD
View
Retailer 5
-
£517 GBP
$694 USD
View
Price last confirmed 17 days ago
B+
Retailer 6
-
£619 GBP
$830 USD
View
B+
Retailer 7
-
£670 GBP
$899 USD
View
B+
Retailer 8
-
£686 GBP
$920 USD
View
B+
Retailer 9
-
£693 GBP
$930 USD
View
B+
Retailer 10
-
£788 GBP
€1,006 EUR
View
B+
Retailer 11
-
£808 GBP
View
B+
Retailer 12
-
£893 GBP
ZAR 19,350 ZAR
View
B
Retailer 13
-
£1,130 GBP
A$2,332 AUD
View
B+
Retailer 14
-
£1,177 GBP
$1,578 USD
View
B
Retailer 15
-
£1,263 GBP
A$2,605 AUD
View
B
Retailer 16
-
£1,362 GBP
$1,827 USD
View
B
Retailer 17
-
£1,639 GBP
SGD 2,971 SGD
View
B
Retailer 18
-
£1,679 GBP
$2,252 USD
View
B
Retailer 19
-
£1,747 GBP
$2,343 USD
View
B
Retailer 20
-
£2,248 GBP
View
B
Retailer 21
-
£2,438 GBP
$3,270 USD
View
Most Expensive
B
Brilliant Earth
15907606A · Nov 2
£2,438 GBP
$3,270 USD
View
21 more retailers have this diamond
Prices start from £418 GBPSave up to £2,021 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
1.25ct Oval
£418 GBP