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Heart|Lab Grown|IGI

1.30ct D IF Heart Lab Grown Diamond

ID • D/IF • IGI LG733570255

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG733570255

Diamond specifications and retailer prices

From £187 GBP
As of November 4, 2026
Save £1,598 GBP (90%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £1,785 GBP at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

About this 1.3ct lab-grown heart diamond

This 1.3ct 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 LG733570255 or 733570255. Listed at 14 retailers as of November 4, 2026, with prices from £187 to £1,785, a £1,598 spread on the same certified stone. Brilliant Earth lists it at £1,785. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.30
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.3°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG733570255
Dimensions7.56 × 6.70 × 4.45 mm
L/W Ratio1.13
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
7.56 mm6.70 mm1.30 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG733570255
Side View
Table 60.0%Crown 33.3°Girdle: MED-THKPavilion 40.4°Culet: NoneDepth 58.9%

Caratlytics Score

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A+
Exceptional
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: £1,785 GBP|Low: £187 GBP|High: £2,667 GBP|Avg: £701 GBP|-33.1%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
November 5, 2026
Retailer 10£187 GBP
Retailer 5£213 GBP
Retailer 14£217 GBP
Retailer 9£263 GBP
Retailer 8£289 GBP
Retailer 13£316 GBP
Retailer 3£319 GBP
Retailer 4£424 GBP
Retailer 7£425 GBP
Retailer 15£629 GBP
Retailer 12£664 GBP
Retailer 11£824 GBP
Retailer 2£1,025 GBP
Retailer 6£1,689 GBP
Brilliant Earth£1,785 GBP

32 data points across 15 retailers

14 retailers£187 GBP to £1,785 GBP

A+
Cheapest Retailer
-
£187 GBP
A
Retailer 2
-
£213 GBP
View
Final sale: no returns
A
Retailer 3
-
£217 GBP
View
A
Retailer 4
-
£263 GBP
View
A
Retailer 5
-
£289 GBP
View
A
Retailer 6
-
£316 GBP
View
A
Retailer 7
-
£319 GBP
View
A
Retailer 8
-
£424 GBP
View
B+
Retailer 9
-
£629 GBP
View
B+
Retailer 10
-
£664 GBP
View
B+
Retailer 11
-
£824 GBP
View
B+
Retailer 12
-
£1,025 GBP
View
B
Retailer 13
-
£1,689 GBP
View
Most Expensive
B
Brilliant Earth
21405073Y · Nov 4
£1,785 GBP
$2,410 USD
View
13 more retailers have this diamond
Prices start from £187 GBPSave up to £1,598 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+
1.30ct Heart
£187 GBP