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Heart|Lab Grown|IGI

1.57ct E SI1 Heart Lab Grown Diamond

ID • E/SI1 • IGI LG528207699

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG528207699

Diamond specifications and retailer prices

From £181 GBP
$241 USD
As of October 30, 2026
Save £814 GBP (82%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £995 GBP at Reve Diamonds · As of October 30, 2026
View at Reve Diamonds

About this 1.57ct lab-grown heart diamond

This 1.57ct lab-grown heart sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG528207699 or 528207699. Listed at 16 retailers as of October 30, 2026, with prices from £181 to £995, a £814 spread on the same certified stone. Reve Diamonds lists it at £995. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.57
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle38.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG528207699
Dimensions8.11 × 6.90 × 4.63 mm
L/W Ratio1.18
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
8.11 mm6.90 mm1.57 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG528207699
Side View
Table 58.5%Crown 35°Girdle: THK-VTKPavilion 38.4°Culet: NoneDepth 57.1%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: £288 GBP|Low: £174 GBP|High: £995 GBP|Avg: £452 GBP
Retailer 1
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Retailer 16
Reve Diamonds
October 30, 2026
Retailer 13£181 GBP
Retailer 7£203 GBP
Retailer 16£210 GBP
Retailer 3£225 GBP
Retailer 14£225 GBP
Retailer 1£288 GBP
Retailer 2£302 GBP
Retailer 8£352 GBP
Retailer 6£375 GBP
Retailer 4£415 GBP
Retailer 9£426 GBP
Retailer 11£438 GBP
Retailer 15£722 GBP
Retailer 12£725 GBP
Retailer 5£761 GBP
Retailer 10£901 GBP
Reve Diamonds£995 GBP

39 data points across 17 retailers

16 retailers£181 GBP to £995 GBP

A
Cheapest Retailer
-
£181 GBP
$241 USD
A
Retailer 2
-
£203 GBP
$270 USD
View
Final sale: no returns
A
Retailer 3
-
£210 GBP
$280 USD
View
A
Retailer 4
-
£225 GBP
$299 USD
View
A
Retailer 5
-
£225 GBP
$299 USD
View
A
Retailer 6
-
£288 GBP
View
B+
Retailer 7
-
£302 GBP
$402 USD
View
B+
Retailer 8
-
£375 GBP
$499 USD
View
B+
Retailer 9
-
£415 GBP
$552 USD
View
B+
Retailer 10
-
£426 GBP
View
B+
Retailer 11
-
£438 GBP
A$898 AUD
View
B
Retailer 12
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£722 GBP
$962 USD
View
B
Retailer 13
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£725 GBP
$965 USD
View
B
Retailer 14
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£761 GBP
$1,014 USD
View
B
Retailer 15
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£901 GBP
View
Most Expensive
B
Reve Diamonds
F23C86C3D · Oct 30
£995 GBP
$1,326 USD
View
15 more retailers have this diamond
Prices start from £181 GBPSave up to £814 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
1.57ct Heart
£181 GBP