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Heart|Lab Grown|IGI

1.55ct D VS1 Heart Lab Grown Diamond

ID • D/VS1 • IGI LG776683156

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG776683156

Diamond specifications and retailer prices

From £173 GBP
As of November 6, 2026
Save £793 GBP (82%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £1,561 GBP at Brilliant Earth · As of October 21, 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 LG776683156 or 776683156. Listed at 22 retailers as of November 6, 2026, with a 458% 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
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.4°
Pavilion angle39.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG776683156
Dimensions7.32 × 8.09 × 4.72 mm
L/W Ratio1.11
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.32 mm8.09 mm1.55 ctD / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG776683156
Side View
Table 56.0%Crown 33.4°Girdle: MED-STKPavilion 39.7°Culet: NoneDepth 58.3%

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: Nov 6
Current: £1,561 GBP|Low: £173 GBP|High: £1,644 GBP|Avg: £543 GBP|-5.0%
Brilliant Earth
Retailer 2
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Retailer 21
November 7, 2026
Retailer 4£173 GBP
Retailer 6£194 GBP
Retailer 11£201 GBP
Retailer 13£214 GBP
Retailer 21£214 GBP
Retailer 17£239 GBP
Retailer 10£363 GBP
Retailer 19£363 GBP
Retailer 14£368 GBP
Retailer 18£400 GBP
Retailer 20£407 GBP
Retailer 2£455 GBP
Retailer 12£506 GBP
Retailer 5£690 GBP
Retailer 8£692 GBP
Retailer 7£728 GBP
Retailer 15£774 GBP
Retailer 16£855 GBP
Retailer 3£873 GBP
Retailer 9£967 GBP
Brilliant Earth£1,561 GBP

35 data points across 21 retailers

22 retailers£173 GBP to £967 GBP

A
Cheapest Retailer
-
£173 GBP
A
Retailer 2
-
£194 GBP
View
Final sale: no returns
A
Retailer 3
-
£201 GBP
View
A
Retailer 4
-
£214 GBP
View
A
Retailer 5
-
£214 GBP
View
A
Retailer 6
-
£239 GBP
View
A
Retailer 7
-
£363 GBP
View
A
Retailer 8
-
£363 GBP
View
A
Retailer 9
-
£368 GBP
View
A
Retailer 10
-
£400 GBP
View
B+
Retailer 11
-
£407 GBP
View
B+
Retailer 12
-
£455 GBP
View
B+
Retailer 13
-
£462 GBP
View
B+
Retailer 14
-
£506 GBP
View
B+
Retailer 15
-
£690 GBP
View
B
Retailer 16
-
£692 GBP
View
B
Retailer 17
-
£728 GBP
View
B
Retailer 18
-
£774 GBP
View
B+
Retailer 19
-
£855 GBP
View
B
Retailer 20
-
£873 GBP
View
B
Retailer 21
-
£967 GBP
View
Most Expensive
Brilliant Earth
17856910A · Oct 21
£1,561 GBP
$2,090 USD
View
Price last confirmed 16 days ago
21 more retailers have this diamond
Prices start from £173 GBPSave up to £793 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
£173 GBP