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Heart|Lab Grown|IGI

1.55ct F SI1 Heart Lab Grown Diamond

VG • F/SI1 • IGI LG594313111

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG594313111

Diamond specifications and retailer prices

From £200 GBP
As of November 1, 2026
Save £1,354 GBP (87%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £1,554 GBP at Do Amore Diamonds · As of November 6, 2026
View at Do Amore Diamonds

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 F colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG594313111 or 594313111. Listed at 13 retailers as of November 5, 2026, with prices from £200 to £1,554, a £1,354 spread on the same certified stone. Do Amore Diamonds lists it at £1,554. 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

1.55
Carat
F
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37°
Pavilion angle39.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG594313111
Dimensions7.06 × 7.96 × 4.77 mm
L/W Ratio1.13
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.
Top View
7.06 mm7.96 mm1.55 ctF / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG594313111
Side View
Table 56.0%Crown 37°Girdle: MED-STKPavilion 39.9°Culet: NoneDepth 59.9%

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 1
Current: £1,554 GBP|Low: £200 GBP|High: £1,554 GBP|Avg: £586 GBP
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 6£200 GBP
Retailer 2£281 GBP
Retailer 7£343 GBP
Retailer 8£391 GBP
Retailer 3£414 GBP
Retailer 5£646 GBP
Retailer 4£883 GBP
Do Amore Diamonds£1,554 GBP

45 data points across 8 retailers

13 retailers£200 GBP to £1,554 GBP

A
Cheapest Retailer
-
£200 GBP
Retailer 2
-
£200 GBP
View
Price last confirmed 35 days ago
A
Retailer 3
-
£200 GBP
View
A
Retailer 4
-
£281 GBP
View
A
Retailer 5
-
£284 GBP
View
B+
Retailer 6
-
£343 GBP
View
B+
Retailer 7
-
£391 GBP
View
B+
Retailer 8
-
£414 GBP
View
B
Retailer 9
-
£646 GBP
View
B
Retailer 10
-
£711 GBP
View
Retailer 11
-
£711 GBP
View
Price last confirmed 38 days ago
B
Retailer 12
-
£883 GBP
View
Most Expensive
B
Do Amore Diamonds
27-8E3FBB8DD · Nov 6
£1,554 GBP
$2,080 USD
View
12 more retailers have this diamond
Prices start from £200 GBPSave up to £1,354 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
£200 GBP