CaratHunter
Plans
Heart|Lab Grown|IGI

1.25ct D IF Heart Lab Grown Diamond

EX • D/IF • IGI LG747530298

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG747530298

Diamond specifications and retailer prices

From £173 GBP
As of November 4, 2026
Save £1,324 GBP (88%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £1,496 GBP at Brilliant Earth · As of November 2, 2026
View at Brilliant Earth

About this 1.25ct lab-grown heart diamond

This 1.25ct lab-grown heart 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 LG747530298 or 747530298. Listed at 13 retailers as of November 2, 2026, with prices from £173 to £1,496, a £1,324 spread on the same certified stone. Brilliant Earth lists it at £1,496. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle39.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG747530298
Dimensions7.02 × 7.28 × 4.23 mm
L/W Ratio1.04
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
7.02 mm7.28 mm1.25 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG747530298
Side View
Table 59.0%Crown 34°Girdle: MED-STKPavilion 39.2°Culet: NoneDepth 58.1%

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 4
Current: £1,496 GBP|Low: £165 GBP|High: £2,170 GBP|Avg: £588 GBP|-31.1%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 4, 2026
Retailer 9£173 GBP
Retailer 5£201 GBP
Retailer 2£220 GBP
Retailer 10£364 GBP
Retailer 8£393 GBP
Retailer 3£416 GBP
Retailer 11£536 GBP
Retailer 7£689 GBP
Retailer 4£691 GBP
Retailer 6£859 GBP
Brilliant Earth£1,496 GBP

37 data points across 11 retailers

13 retailers£173 GBP to £1,496 GBP

A
Cheapest Retailer
-
£173 GBP
A
Retailer 2
-
£200 GBP
View
Final sale: no returns
A
Retailer 3
-
£201 GBP
View
A
Retailer 4
-
£220 GBP
View
A
Retailer 5
-
£364 GBP
View
A
Retailer 6
-
£393 GBP
View
Retailer 7
-
£536 GBP
View
Price last confirmed 9 days ago
Retailer 8
-
£538 GBP
View
Price last confirmed 39 days ago
B+
Retailer 9
-
£556 GBP
View
B+
Retailer 10
-
£689 GBP
View
B+
Retailer 11
-
£691 GBP
View
B+
Retailer 12
-
£859 GBP
View
Most Expensive
B
Brilliant Earth
16743241A · Nov 2
£1,496 GBP
$2,020 USD
View
12 more retailers have this diamond
Prices start from £173 GBPSave up to £1,324 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 Heart
£173 GBP