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Heart|Lab Grown|IGI

1.03ct E IF Heart Lab Grown Diamond

EX • E/IF • IGI LG620463128

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG620463128

Diamond specifications and retailer prices

From £223 GBP
$299 USD
As of October 30, 2026
Save £890 GBP (80%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £1,113 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1.03ct lab-grown heart diamond

This 1.03ct lab-grown heart 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 LG620463128 or 620463128. Listed at 18 retailers as of October 29, 2026, with prices from £223 to £1,113, a £890 spread on the same certified stone. MOH London lists it at £1,113. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.03
Carat
E
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle37.5°
Pavilion angle38.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG620463128
Dimensions6.37 × 6.94 × 4.07 mm
L/W Ratio1.09
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
6.37 mm6.94 mm1.03 ctE / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG620463128
Side View
Table 62.0%Crown 37.5°Girdle: MED-THKPavilion 38.2°Culet: NoneDepth 58.6%

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: Oct 30
Current: £1,113 GBP|Low: £219 GBP|High: £1,144 GBP|Avg: £527 GBP|-2.6%
MOH London
Retailer 2
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Retailer 18
October 31, 2026
Retailer 7£223 GBP
Retailer 11£250 GBP
Retailer 4£258 GBP
Retailer 14£276 GBP
Retailer 10£282 GBP
Retailer 3£372 GBP
Retailer 5£392 GBP
Retailer 16£455 GBP
Retailer 6£459 GBP
Retailer 18£475 GBP
Retailer 12£490 GBP
Retailer 15£502 GBP
Retailer 2£711 GBP
Retailer 17£888 GBP
Retailer 8£924 GBP
Retailer 13£987 GBP
Retailer 9£1,022 GBP
MOH London£1,113 GBP

36 data points across 18 retailers

18 retailers£223 GBP to £1,113 GBP

A
Cheapest Retailer
-
£223 GBP
$299 USD
A
Retailer 2
-
£250 GBP
$335 USD
View
Final sale: no returns
A
Retailer 3
-
£258 GBP
$346 USD
View
A
Retailer 4
-
£276 GBP
$370 USD
View
A
Retailer 5
-
£282 GBP
$378 USD
View
A
Retailer 6
-
£372 GBP
$498 USD
View
B+
Retailer 7
-
£392 GBP
$525 USD
View
B+
Retailer 8
-
£455 GBP
$610 USD
View
B+
Retailer 9
-
£459 GBP
$615 USD
View
B+
Retailer 10
-
£475 GBP
ZAR 10,276 ZAR
View
B+
Retailer 11
-
£490 GBP
View
B+
Retailer 12
-
£502 GBP
€641 EUR
View
B
Retailer 13
-
£711 GBP
$953 USD
View
B
Retailer 14
-
£888 GBP
$1,190 USD
View
B
Retailer 15
-
£924 GBP
$1,238 USD
View
B
Retailer 16
-
£987 GBP
$1,323 USD
View
B
Retailer 17
-
£1,022 GBP
$1,370 USD
View
Most Expensive
B
MOH London
LG620463128 · Oct 29
£1,113 GBP
View
17 more retailers have this diamond
Prices start from £223 GBPSave up to £890 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
£223 GBP