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Heart|Lab Grown|IGI

1.51ct D IF Heart Lab Grown Diamond

EX • D/IF • IGI LG754561307

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG754561307

Diamond specifications and retailer prices

From £472 GBP
$632 USD
As of November 1, 2026
Save £2,058 GBP (81%) vs most expensive(unlock to see where)
9 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 top-tier cut grade and certified by IGI LG754561307 or 754561307. Listed at 9 retailers as of October 31, 2026, with prices from £472 to £2,529, a £2,058 spread on the same certified stone. Novita Diamonds lists it at £2,529. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
D
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.4°
Pavilion angle37.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG754561307
Dimensions6.91 × 8.16 × 4.52 mm
L/W Ratio1.18
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
6.91 mm8.16 mm1.51 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG754561307
Side View
Table 54.0%Crown 36.4°Girdle: MED-STKPavilion 37.7°Culet: NoneDepth 55.4%

Caratlytics Score

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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: Nov 1
Current: £2,529 GBP|Low: £472 GBP|High: £2,567 GBP|Avg: £1,209 GBP|+1.5%
Novita Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 4£472 GBP
Retailer 7£534 GBP
Retailer 3£634 GBP
Retailer 8£774 GBP
Retailer 9£1,156 GBP
Retailer 6£1,225 GBP
Retailer 2£1,371 GBP
Retailer 5£2,351 GBP
Novita Diamonds£2,529 GBP

45 data points across 9 retailers

9 retailers£472 GBP to £2,529 GBP

A
Cheapest Retailer
-
£472 GBP
$632 USD
A
Retailer 2
-
£534 GBP
$715 USD
View
A
Retailer 3
-
£634 GBP
View
A
Retailer 4
-
£774 GBP
$1,037 USD
View
B+
Retailer 5
-
£1,156 GBP
$1,549 USD
View
B+
Retailer 6
-
£1,225 GBP
$1,642 USD
View
B+
Retailer 7
-
£1,371 GBP
View
Retailer 8
-
£2,351 GBP
$3,150 USD
View
Price last confirmed 16 days ago
Most Expensive
B
Novita Diamonds
cert_754561307 · Oct 31
£2,529 GBP
A$5,214 AUD
View
8 more retailers have this diamond
Prices start from £472 GBPSave up to £2,058 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
£472 GBP