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Heart|Lab Grown|IGI

1.55ct D VS1 Heart Lab Grown Diamond

EX • D/VS1 • IGI LG665440846

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG665440846

Diamond specifications and retailer prices

From £196 GBP
As of November 6, 2026
Save £1,366 GBP (87%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £1,561 GBP at Brilliant Earth · As of November 6, 2026
View at Brilliant Earth

About this 1.55ct lab-grown heart diamond

This 1.55ct lab-grown heart sits in the one-and-a-half to two carat band, graded D colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG665440846 or 665440846. Listed at 22 retailers as of November 6, 2026, with prices from £196 to £1,561, a £1,366 spread on the same certified stone. Brilliant Earth lists it at £1,561. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.55
Carat
D
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.8°
Pavilion angle38.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG665440846
Dimensions7.15 × 8.12 × 4.71 mm
L/W Ratio1.14
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.15 mm8.12 mm1.55 ctD / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG665440846
Side View
Table 56.0%Crown 35.8°Girdle: MED-STKPavilion 38.7°Culet: NoneDepth 58.0%

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 6
Current: £1,561 GBP|Low: £196 GBP|High: £1,644 GBP|Avg: £613 GBP|-5.0%
Brilliant Earth
Retailer 2
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Retailer 21
November 7, 2026
Retailer 21£196 GBP
Retailer 4£219 GBP
Retailer 9£227 GBP
Retailer 13£243 GBP
Retailer 17£270 GBP
Retailer 20£362 GBP
Retailer 7£405 GBP
Retailer 19£411 GBP
Retailer 14£415 GBP
Retailer 18£461 GBP
Retailer 12£498 GBP
Retailer 2£516 GBP
Retailer 11£574 GBP
Retailer 6£746 GBP
Retailer 3£781 GBP
Retailer 5£819 GBP
Retailer 15£859 GBP
Retailer 10£956 GBP
Retailer 16£968 GBP
Retailer 8£1,039 GBP
Brilliant Earth£1,561 GBP

37 data points across 21 retailers

22 retailers£196 GBP to £1,561 GBP

A
Cheapest Retailer
-
£196 GBP
Retailer 2
-
£214 GBP
View
Price last confirmed 41 days ago
A
Retailer 3
-
£219 GBP
View
Final sale: no returns
A
Retailer 4
-
£227 GBP
View
A
Retailer 5
-
£243 GBP
View
A
Retailer 6
-
£270 GBP
View
A
Retailer 7
-
£362 GBP
View
A
Retailer 8
-
£405 GBP
View
A
Retailer 9
-
£411 GBP
View
B+
Retailer 10
-
£415 GBP
View
B+
Retailer 11
-
£461 GBP
View
B+
Retailer 12
-
£498 GBP
View
B+
Retailer 13
-
£516 GBP
View
B+
Retailer 14
-
£574 GBP
View
B
Retailer 15
-
£746 GBP
View
B+
Retailer 16
-
£781 GBP
View
B
Retailer 17
-
£819 GBP
View
B
Retailer 18
-
£859 GBP
View
B
Retailer 19
-
£956 GBP
View
B
Retailer 20
-
£968 GBP
View
B
Retailer 21
-
£1,039 GBP
View
Most Expensive
B
Brilliant Earth
12313429A · Nov 6
£1,561 GBP
$2,090 USD
View
21 more retailers have this diamond
Prices start from £196 GBPSave up to £1,366 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
1.55ct Heart
£196 GBP