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Heart|Lab Grown|IGI

1.51ct D FL Heart Lab Grown Diamond

VG • D/FL • IGI LG818654467

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG818654467

Diamond specifications and retailer prices

From £418 GBP
As of November 4, 2026
Save £3,293 GBP (89%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £3,711 GBP at Do Amore Diamonds · As of November 4, 2026
View at Do Amore 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 FL clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG818654467 or 818654467. Listed at 13 retailers as of November 4, 2026, with prices from £418 to £3,711, a £3,293 spread on the same certified stone. Do Amore Diamonds lists it at £3,711. 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
FL
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818654467
Dimensions7.61 × 7.31 × 4.77 mm
L/W Ratio1.04
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
7.61 mm7.31 mm1.51 ctD / FL
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818654467
Side View
Table 56.0%Crown 35°Girdle: STK-THKPavilion 40.6°Culet: NoneDepth 62.7%

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: Nov 4
Current: £3,711 GBP|Low: £418 GBP|High: £5,341 GBP|Avg: £1,676 GBP|-30.5%
Do Amore 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
Retailer 14
November 5, 2026
Retailer 9£418 GBP
Retailer 13£468 GBP
Retailer 14£622 GBP
Retailer 3£648 GBP
Retailer 10£798 GBP
Retailer 7£916 GBP
Retailer 4£1,154 GBP
Retailer 11£1,286 GBP
Retailer 12£1,504 GBP
Retailer 6£1,918 GBP
Retailer 2£2,248 GBP
Retailer 8£2,482 GBP
Retailer 5£2,913 GBP
Do Amore Diamonds£3,711 GBP

27 data points across 14 retailers

13 retailers£418 GBP to £3,711 GBP

A
Cheapest Retailer
-
£418 GBP
A
Retailer 2
-
£468 GBP
View
A
Retailer 3
-
£622 GBP
View
A
Retailer 4
-
£648 GBP
View
A
Retailer 5
-
£798 GBP
View
B+
Retailer 6
-
£916 GBP
View
B+
Retailer 7
-
£1,154 GBP
View
B+
Retailer 8
-
£1,286 GBP
View
B
Retailer 9
-
£1,504 GBP
View
Retailer 10
-
£1,918 GBP
View
Price last confirmed 88 days ago
B
Retailer 11
-
£2,248 GBP
View
B
Retailer 12
-
£2,482 GBP
View
Most Expensive
B
Do Amore Diamonds
27-4206B6745 · Nov 4
£3,711 GBP
$5,010 USD
View
12 more retailers have this diamond
Prices start from £418 GBPSave up to £3,293 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
£418 GBP