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Heart|Lab Grown|IGI

1.55ct D VVS1 Heart Lab Grown Diamond

EX • D/VVS1 • IGI LG771645368

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG771645368

Diamond specifications and retailer prices

From £216 GBP
As of November 4, 2026
Save £853 GBP (80%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: £1,615 GBP at Brilliant Earth · As of October 16, 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 VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG771645368 or 771645368. Listed at 24 retailers as of November 3, 2026, with a 396% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
VVS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.3°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG771645368
Dimensions7.43 × 7.71 × 4.66 mm
L/W Ratio1.04
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.43 mm7.71 mm1.55 ctD / VVS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG771645368
Side View
Table 59.0%Crown 36.3°Girdle: STK-THKPavilion 40.9°Culet: NoneDepth 60.4%

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 4
Current: £1,615 GBP|Low: £216 GBP|High: £1,615 GBP|Avg: £603 GBP
Brilliant Earth
Retailer 2
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Retailer 20
November 5, 2026
Retailer 9£216 GBP
Retailer 11£241 GBP
Retailer 6£250 GBP
Retailer 20£267 GBP
Retailer 13£281 GBP
Retailer 5£359 GBP
Retailer 7£381 GBP
Retailer 18£460 GBP
Retailer 3£461 GBP
Retailer 2£467 GBP
Retailer 17£473 GBP
Retailer 8£532 GBP
Retailer 15£626 GBP
Retailer 14£820 GBP
Retailer 19£836 GBP
Retailer 4£858 GBP
Retailer 12£893 GBP
Retailer 10£1,026 GBP
Retailer 16£1,069 GBP
Brilliant Earth£1,615 GBP

28 data points across 20 retailers

24 retailers£216 GBP to £1,069 GBP

A
Cheapest Retailer
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£216 GBP
A
Retailer 2
-
£241 GBP
View
Final sale: no returns
A
Retailer 3
-
£250 GBP
View
A
Retailer 4
-
£267 GBP
View
Retailer 5
-
£273 GBP
View
Price last confirmed 11 days ago
A
Retailer 6
-
£281 GBP
View
A
Retailer 7
-
£359 GBP
View
A
Retailer 8
-
£381 GBP
View
B+
Retailer 9
-
£460 GBP
View
B+
Retailer 10
-
£461 GBP
View
B+
Retailer 11
-
£467 GBP
View
B+
Retailer 12
-
£473 GBP
View
B+
Retailer 13
-
£532 GBP
View
B+
Retailer 14
-
£626 GBP
View
B+
Retailer 15
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£689 GBP
View
B
Retailer 16
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£820 GBP
View
B
Retailer 17
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£836 GBP
View
B
Retailer 18
-
£858 GBP
View
Retailer 19
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£862 GBP
View
Price last confirmed 163 days ago
B
Retailer 20
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£893 GBP
View
B
Retailer 21
-
£955 GBP
View
B
Retailer 22
-
£1,026 GBP
View
B
Retailer 23
-
£1,069 GBP
View
Most Expensive
Brilliant Earth
18531281A · Oct 16
£1,615 GBP
$2,180 USD
View
Price last confirmed 19 days ago
23 more retailers have this diamond
Prices start from £216 GBPSave up to £853 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
£216 GBP