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Heart|Lab Grown|IGI

1.50ct D SI1 Heart Lab Grown Diamond

VG • D/SI1 • IGI LG831623817

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG831623817

Diamond specifications and retailer prices

From £155 GBP
As of November 6, 2026
Save £754 GBP (83%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £908 GBP at Reve Diamonds · As of November 6, 2026
View at Reve Diamonds

About this 1.5ct lab-grown heart diamond

This 1.5ct lab-grown heart sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG831623817 or 831623817. Listed at 15 retailers as of November 6, 2026, with prices from £155 to £908, a £754 spread on the same certified stone. Reve Diamonds lists it at £908. 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

1.50
Carat
D
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.7°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG831623817
Dimensions7.39 × 7.71 × 4.56 mm
L/W Ratio1.04
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.39 mm7.71 mm1.50 ctD / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG831623817
Side View
Table 70.0%Crown 32.7°Girdle: MED-STKPavilion 41°Culet: NoneDepth 59.1%

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 6
Current: £350 GBP|Low: £173 GBP|High: £908 GBP|Avg: £430 GBP|+1.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Reve Diamonds
November 6, 2026
Retailer 6£173 GBP
Retailer 5£192 GBP
Retailer 8£258 GBP
Retailer 3£318 GBP
Retailer 1£350 GBP
Retailer 9£365 GBP
Retailer 7£619 GBP
Retailer 4£656 GBP
Retailer 2£765 GBP
Reve Diamonds£908 GBP

24 data points across 10 retailers

15 retailers£155 GBP to £908 GBP

A
Cheapest Retailer
-
£155 GBP
A
Retailer 2
-
£173 GBP
View
Final sale: no returns
Retailer 3
-
£192 GBP
View
Price last confirmed 18 days ago
Retailer 4
-
£192 GBP
View
Price last confirmed 12 days ago
A
Retailer 5
-
£192 GBP
View
B+
Retailer 6
-
£258 GBP
View
B+
Retailer 7
-
£318 GBP
View
B+
Retailer 8
-
£350 GBP
View
B+
Retailer 9
-
£365 GBP
View
Retailer 10
-
£616 GBP
View
Price last confirmed 17 days ago
B
Retailer 11
-
£616 GBP
View
B
Retailer 12
-
£619 GBP
View
B
Retailer 13
-
£656 GBP
View
B
Retailer 14
-
£765 GBP
View
Most Expensive
B
Reve Diamonds
5921A6628 · Nov 6
£908 GBP
$1,216 USD
View
14 more retailers have this diamond
Prices start from £155 GBPSave up to £754 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
1.50ct Heart
£155 GBP