Radiant|Lab Grown|IGI

1.57ct I VS1 Radiant Lab Grown Diamond

VG • I/VS1 • IGI LG649405808

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG649405808

Diamond specifications and retailer prices

From £278 GBP
$372 USD
As of October 30, 2026
Save £635 GBP (70%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £913 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 1.57ct lab-grown radiant diamond

This 1.57ct lab-grown radiant sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and VS1 clarity (very-slightly-included), with a very-good cut grade and certified by IGI LG649405808 or 649405808. Listed at 8 retailers as of October 30, 2026, with prices from £278 to £913, a £635 spread on the same certified stone. MOH London lists it at £913. 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

1.57
Carat
I
Colour
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.7°
Pavilion angle34.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG649405808
Dimensions8.04 × 5.76 × 4.00 mm
L/W Ratio1.40
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.04 mm5.76 mm1.57 ctI / VS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG649405808
Side View
Table 64.0%Crown 44.7°Girdle: MediumPavilion 34.9°Culet: NoneDepth 69.4%

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: Oct 30
Current: £913 GBP|Low: £278 GBP|High: £923 GBP|Avg: £553 GBP|-1.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 1, 2026
Retailer 5£278 GBP
Retailer 3£352 GBP
Retailer 8£358 GBP
Retailer 4£397 GBP
Retailer 2£616 GBP
Retailer 7£687 GBP
Retailer 6£860 GBP
MOH London£913 GBP

9 data points across 8 retailers

8 retailers£278 GBP to £913 GBP

A
Cheapest Retailer
-
£278 GBP
$372 USD
B+
Retailer 2
-
£352 GBP
$471 USD
View
B+
Retailer 3
-
£397 GBP
$532 USD
View
Retailer 4
-
£608 GBP
$814 USD
View
Price last confirmed 73 days ago
B+
Retailer 5
-
£616 GBP
$825 USD
View
Retailer 6
-
£620 GBP
$830 USD
View
Price last confirmed 69 days ago
B
Retailer 7
-
£860 GBP
$1,152 USD
View
Most Expensive
B
MOH London
LG649405808 · Nov 1
£913 GBP
View
7 more retailers have this diamond
Prices start from £278 GBPSave up to £635 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 Radiant
£278 GBP