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Heart|Lab Grown|IGI

1.51ct E SI1 Heart Lab Grown Diamond

VG • E/SI1 • IGI LG459130247

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG459130247

Diamond specifications and retailer prices

From £156 GBP
$209 USD
As of October 30, 2026
Save £1,344 GBP (90%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £1,500 GBP at Do Amore Diamonds · As of October 29, 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 E colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG459130247 or 459130247. Listed at 8 retailers as of October 29, 2026, with prices from £156 to £1,500, a £1,344 spread on the same certified stone. Do Amore Diamonds lists it at £1,500. 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
E
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle35.8°
Pavilion angle37.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG459130247
Dimensions7.92 × 6.78 × 4.54 mm
L/W Ratio1.17
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.92 mm6.78 mm1.51 ctE / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG459130247
Side View
Table 60.5%Crown 35.8°Girdle: THK-VTKPavilion 37.9°Culet: NoneDepth 57.3%

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: £1,500 GBP|Low: £119 GBP|High: £1,530 GBP|Avg: £555 GBP|-2.0%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 26, 2026
Retailer 4£156 GBP
Retailer 6£175 GBP
Retailer 5£333 GBP
Retailer 7£360 GBP
Retailer 8£388 GBP
Retailer 9£434 GBP
Retailer 10£555 GBP
Retailer 3£625 GBP
Retailer 2£858 GBP
Do Amore Diamonds£1,500 GBP

12 data points across 10 retailers

8 retailers£156 GBP to £1,500 GBP

A
Cheapest Retailer
-
£156 GBP
$209 USD
A
Retailer 2
-
£175 GBP
$234 USD
View
Final sale: no returns
A
Retailer 3
-
£181 GBP
$243 USD
View
B
Retailer 4
-
£333 GBP
$446 USD
View
B
Retailer 5
-
£625 GBP
$837 USD
View
B
Retailer 6
-
£687 GBP
$920 USD
View
B
Retailer 7
-
£858 GBP
View
Most Expensive
C
Do Amore Diamonds
27-3A9B3D2D2 · Oct 29
£1,500 GBP
$2,010 USD
View
7 more retailers have this diamond
Prices start from £156 GBPSave up to £1,344 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
£156 GBP