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Heart|Lab Grown|IGI

1.51ct D IF Heart Lab Grown Diamond

VG • D/IF • IGI LG843639220

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG843639220

Diamond specifications and retailer prices

From £352 GBP
$472 USD
As of October 30, 2026
Save £2,177 GBP (86%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £2,529 GBP at Novita Diamonds · As of October 31, 2026
View at Novita Diamonds

About this 1.51ct lab-grown heart diamond

This 1.51ct lab-grown heart sits in the one-and-a-half to two carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG843639220 or 843639220. Listed at 21 retailers as of October 30, 2026, with prices from £352 to £2,529, a £2,177 spread on the same certified stone. Novita Diamonds lists it at £2,529. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.51
Carat
D
Colour
IF
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle37.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG843639220
Dimensions6.86 × 8.02 × 4.60 mm
L/W Ratio1.17
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
6.86 mm8.02 mm1.51 ctD / IF
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG843639220
Side View
Table 63.0%Crown 35.4°Girdle: MED-THKPavilion 37.9°Culet: NoneDepth 57.4%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: £2,529 GBP|Low: £352 GBP|High: £2,529 GBP|Avg: £917 GBP
Novita Diamonds
Retailer 2
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Retailer 21
November 1, 2026
Retailer 6£352 GBP
Retailer 4£394 GBP
Retailer 7£394 GBP
Retailer 10£437 GBP
Retailer 20£437 GBP
Retailer 13£461 GBP
Retailer 16£522 GBP
Retailer 14£586 GBP
Retailer 9£668 GBP
Retailer 15£724 GBP
Retailer 19£750 GBP
Retailer 8£798 GBP
Retailer 17£1,014 GBP
Retailer 18£1,016 GBP
Retailer 12£1,356 GBP
Retailer 21£1,403 GBP
Retailer 11£1,425 GBP
Retailer 3£1,537 GBP
Retailer 2£1,603 GBP
Retailer 5£2,123 GBP
Novita Diamonds£2,529 GBP

21 data points across 21 retailers

21 retailers£352 GBP to £2,529 GBP

A
Cheapest Retailer
-
£352 GBP
$472 USD
A
Retailer 2
-
£394 GBP
$528 USD
View
Final sale: no returns
A
Retailer 3
-
£394 GBP
$528 USD
View
Retailer 4
-
£437 GBP
$585 USD
View
Price last confirmed 16 days ago
A
Retailer 5
-
£437 GBP
$585 USD
View
A
Retailer 6
-
£461 GBP
View
A
Retailer 7
-
£522 GBP
$700 USD
View
A
Retailer 8
-
£586 GBP
$785 USD
View
A
Retailer 9
-
£668 GBP
$895 USD
View
A
Retailer 10
-
£724 GBP
View
A
Retailer 11
-
£750 GBP
ZAR 16,232 ZAR
View
B+
Retailer 12
-
£798 GBP
$1,069 USD
View
B+
Retailer 13
-
£1,014 GBP
$1,359 USD
View
B+
Retailer 14
-
£1,016 GBP
A$2,095 AUD
View
B
Retailer 15
-
£1,356 GBP
$1,817 USD
View
B
Retailer 16
-
£1,403 GBP
$1,880 USD
View
B
Retailer 17
-
£1,425 GBP
$1,909 USD
View
B
Retailer 18
-
£1,537 GBP
$2,060 USD
View
B
Retailer 19
-
£1,603 GBP
View
B
Retailer 20
-
£2,123 GBP
View
Most Expensive
B
Novita Diamonds
cert_843639220 · Oct 31
£2,529 GBP
A$5,214 AUD
View
20 more retailers have this diamond
Prices start from £352 GBPSave up to £2,177 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
1.51ct Heart
£352 GBP