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Heart|Lab Grown|IGI

1.50ct E IF Heart Lab Grown Diamond

ID • E/IF • IGI LG623481707

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG623481707

Diamond specifications and retailer prices

From £300 GBP
$402 USD
As of October 30, 2026
Save £1,091 GBP (78%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £2,172 GBP at Brilliant Earth · As of October 8, 2026
View at Brilliant Earth

About this 1.5ct lab-grown heart diamond

This 1.5ct lab-grown heart sits in the one-and-a-half to two carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG623481707 or 623481707. Listed at 18 retailers as of October 30, 2026, with a 364% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.50
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle41.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG623481707
Dimensions7.82 × 7.82 × 6.82 mm
L/W Ratio1.00
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
7.82 mm7.82 mm1.50 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG623481707
Side View
Table 62.0%Crown 35°Girdle: MED-STKPavilion 41.9°Culet: NoneDepth 60.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £2,172 GBP|Low: £239 GBP|High: £2,291 GBP|Avg: £925 GBP|-5.2%
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
Retailer 16
October 30, 2026
Retailer 15£300 GBP
Retailer 5£335 GBP
Retailer 3£372 GBP
Retailer 11£481 GBP
Retailer 14£500 GBP
Retailer 2£611 GBP
Retailer 10£639 GBP
Retailer 6£776 GBP
Retailer 13£865 GBP
Retailer 9£865 GBP
Retailer 4£1,195 GBP
Retailer 8£1,221 GBP
Retailer 7£1,371 GBP
Retailer 16£1,391 GBP
Retailer 12£1,460 GBP
Brilliant Earth£2,172 GBP

45 data points across 16 retailers

18 retailers£300 GBP to £1,391 GBP

A
Cheapest Retailer
-
£300 GBP
$402 USD
A
Retailer 2
-
£335 GBP
$449 USD
View
Final sale: no returns
A
Retailer 3
-
£336 GBP
$450 USD
View
A
Retailer 4
-
£372 GBP
$498 USD
View
A
Retailer 5
-
£372 GBP
$498 USD
View
A
Retailer 6
-
£481 GBP
$645 USD
View
A
Retailer 7
-
£500 GBP
$670 USD
View
A
Retailer 8
-
£611 GBP
View
A
Retailer 9
-
£639 GBP
ZAR 13,825 ZAR
View
A
Retailer 10
-
£776 GBP
$1,040 USD
View
B+
Retailer 11
-
£865 GBP
$1,159 USD
View
A
Retailer 12
-
£865 GBP
A$1,784 AUD
View
B+
Retailer 13
-
£1,195 GBP
$1,601 USD
View
B+
Retailer 14
-
£1,221 GBP
$1,637 USD
View
B+
Retailer 15
-
£1,371 GBP
$1,837 USD
View
B+
Retailer 16
-
£1,391 GBP
$1,864 USD
View
Retailer 17
-
£1,460 GBP
View
Price last confirmed 11 days ago
Most Expensive
Brilliant Earth
21385356A · Oct 8
£2,172 GBP
$2,910 USD
View
Price last confirmed 22 days ago
17 more retailers have this diamond
Prices start from £300 GBPSave up to £1,091 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
1.50ct Heart
£300 GBP