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Round|Lab Grown|IGI

1.57ct G SI1 Round Lab Grown Diamond

ID • G/SI1 • IGI LG442038198

Shape and cutting style on the report: Round brilliant

Certificate IGI LG442038198

Diamond specifications and retailer prices

From £221 GBP
$296 USD
As of October 29, 2026
Save £992 GBP (82%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £1,963 GBP at Do Amore Diamonds · As of October 30, 2026
View at Do Amore Diamonds

About this 1.57ct lab-grown round diamond

This 1.57ct lab-grown round sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG442038198 or 442038198. Listed at 15 retailers as of October 26, 2026, with a 449% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG442038198
Dimensions7.57 × 7.51 × 4.55 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Chemical Vapor Deposition (CVD) laboratory grown diamond is classified as Type IIa
Top View
7.57 mm7.51 mm1.57 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG442038198
Side View
Table 59.0%Crown 34°Girdle: MediumPavilion 41°Culet: NoneDepth 60.3%

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: Oct 29
Current: £1,963 GBP|Low: £138 GBP|High: £1,963 GBP|Avg: £605 GBP
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
October 31, 2026
Retailer 6£138 GBP
Retailer 9£221 GBP
Retailer 12£274 GBP
Retailer 13£274 GBP
Retailer 10£298 GBP
Retailer 11£392 GBP
Retailer 14£449 GBP
Retailer 2£539 GBP
Retailer 4£629 GBP
Retailer 8£841 GBP
Retailer 5£984 GBP
Retailer 3£1,092 GBP
Retailer 7£1,213 GBP
Do Amore Diamonds£1,963 GBP

29 data points across 14 retailers

15 retailers£221 GBP to £1,213 GBP

Retailer 1
-
£201 GBP
$269 USD
Price last confirmed 25 days ago
Retailer 2
-
£214 GBP
$287 USD
View
Price last confirmed 29 days ago
A
Retailer 3
-
£221 GBP
$296 USD
View
A
Retailer 4
-
£274 GBP
$367 USD
View
A
Retailer 5
-
£274 GBP
$367 USD
View
A
Retailer 6
-
£298 GBP
$399 USD
View
B+
Retailer 7
-
£392 GBP
$525 USD
View
B+
Retailer 8
-
£449 GBP
$602 USD
View
B+
Retailer 9
-
£539 GBP
View
B
Retailer 10
-
£629 GBP
$843 USD
View
B
Retailer 11
-
£841 GBP
$1,127 USD
View
B
Retailer 12
-
£984 GBP
$1,319 USD
View
B
Retailer 13
-
£1,092 GBP
$1,463 USD
View
B
Retailer 14
-
£1,213 GBP
View
Most Expensive
Do Amore Diamonds
27-E64C8D2CC · Oct 30
£1,963 GBP
$2,630 USD
View
Price under review
14 more retailers have this diamond
Prices start from £221 GBPSave up to £992 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 Round
£221 GBP