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Heart|Lab Grown|IGI

1.51ct D IF Heart Lab Grown Diamond

ID • D/IF • IGI LG836603148

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG836603148

Diamond specifications and retailer prices

From £269 GBP
$361 USD
As of October 30, 2026
Save £2,260 GBP (89%) vs most expensive(unlock to see where)
13 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 LG836603148 or 836603148. Listed at 13 retailers as of October 30, 2026, with prices from £269 to £2,529, a £2,260 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.6°
Pavilion angle39.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG836603148
Dimensions7.81 × 6.84 × 4.69 mm
L/W Ratio1.14
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
7.81 mm6.84 mm1.51 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG836603148
Side View
Table 61.0%Crown 36.6°Girdle: STK-THKPavilion 39.6°Culet: NoneDepth 60.1%

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: Oct 30
Current: £2,529 GBP|Low: £264 GBP|High: £2,561 GBP|Avg: £1,146 GBP|-1.0%
Novita Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 1, 2026
Retailer 9£269 GBP
Retailer 6£390 GBP
Retailer 3£481 GBP
Retailer 12£535 GBP
Retailer 4£611 GBP
Retailer 8£860 GBP
Retailer 5£893 GBP
Retailer 10£981 GBP
Retailer 13£1,187 GBP
Retailer 2£1,443 GBP
Retailer 7£2,045 GBP
Retailer 11£2,396 GBP
Novita Diamonds£2,529 GBP

32 data points across 13 retailers

13 retailers£269 GBP to £2,529 GBP

A
Cheapest Retailer
-
£269 GBP
$361 USD
A
Retailer 2
-
£390 GBP
View
A
Retailer 3
-
£481 GBP
$645 USD
View
A
Retailer 4
-
£535 GBP
$717 USD
View
A
Retailer 5
-
£611 GBP
$819 USD
View
A
Retailer 6
-
£860 GBP
A$1,773 AUD
View
B+
Retailer 7
-
£893 GBP
$1,196 USD
View
B+
Retailer 8
-
£981 GBP
$1,314 USD
View
B+
Retailer 9
-
£1,187 GBP
$1,590 USD
View
B+
Retailer 10
-
£1,443 GBP
View
B
Retailer 11
-
£2,045 GBP
$2,740 USD
View
B
Retailer 12
-
£2,396 GBP
$3,210 USD
View
Most Expensive
B
Novita Diamonds
cert_836603148 · Oct 31
£2,529 GBP
A$5,214 AUD
View
12 more retailers have this diamond
Prices start from £269 GBPSave up to £2,260 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
£269 GBP