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Heart|Lab Grown|IGI

1.03ct D IF Heart Lab Grown Diamond

ID • D/IF • IGI LG836621261

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG836621261

Diamond specifications and retailer prices

From £156 GBP
$207 USD
As of October 27, 2026
Save £1,124 GBP (88%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £1,279 GBP at Brilliant Earth · As of October 28, 2026
View at Brilliant Earth

About this 1.03ct lab-grown heart diamond

This 1.03ct lab-grown heart sits in the classic one-carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG836621261 or 836621261. Listed at 19 retailers as of October 27, 2026, with prices from £156 to £1,279, a £1,124 spread on the same certified stone. Brilliant Earth lists it at £1,279. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.03
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.3°
Pavilion angle37.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG836621261
Dimensions6.41 × 7.11 × 4.02 mm
L/W Ratio1.11
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
6.41 mm7.11 mm1.03 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG836621261
Side View
Table 55.0%Crown 33.3°Girdle: MED-STKPavilion 37.9°Culet: NoneDepth 56.5%

Caratlytics Score

How it works →
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: Oct 27
Current: £1,279 GBP|Low: £175 GBP|High: £1,317 GBP|Avg: £506 GBP|-2.9%
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
October 29, 2026
Retailer 4£175 GBP
Retailer 7£200 GBP
Retailer 2£325 GBP
Retailer 9£332 GBP
Retailer 5£334 GBP
Retailer 8£354 GBP
Retailer 14£429 GBP
Retailer 10£473 GBP
Retailer 12£497 GBP
Retailer 6£565 GBP
Retailer 3£662 GBP
Retailer 13£721 GBP
Retailer 11£776 GBP
Brilliant Earth£1,279 GBP

31 data points across 14 retailers

19 retailers£156 GBP to £1,279 GBP

A+
Cheapest Retailer
-
£156 GBP
$207 USD
A
Retailer 2
-
£175 GBP
$232 USD
View
Final sale: no returns
A
Retailer 3
-
£181 GBP
$241 USD
View
A
Retailer 4
-
£193 GBP
$257 USD
View
A
Retailer 5
-
£193 GBP
$257 USD
View
A
Retailer 6
-
£200 GBP
View
A
Retailer 7
-
£325 GBP
€411 EUR
View
A
Retailer 8
-
£332 GBP
ZAR 7,135 ZAR
View
A
Retailer 9
-
£334 GBP
$444 USD
View
A
Retailer 10
-
£354 GBP
View
A
Retailer 11
-
£429 GBP
$570 USD
View
B+
Retailer 12
-
£473 GBP
A$967 AUD
View
B+
Retailer 13
-
£497 GBP
$661 USD
View
B+
Retailer 14
-
£565 GBP
SGD 1,015 SGD
View
B+
Retailer 15
-
£622 GBP
$826 USD
View
B+
Retailer 16
-
£662 GBP
$880 USD
View
B+
Retailer 17
-
£721 GBP
$958 USD
View
B+
Retailer 18
-
£776 GBP
View
Most Expensive
B
Brilliant Earth
21589887A · Oct 28
£1,279 GBP
$1,700 USD
View
18 more retailers have this diamond
Prices start from £156 GBPSave up to £1,124 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+
1.03ct Heart
£156 GBP