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Radiant|Lab Grown|IGI

1.57ct I VS1 Radiant Lab Grown Diamond

ID • I/VS1 • IGI LG494160318

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

Certificate IGI LG494160318

Diamond specifications and retailer prices

From £1,090 GBP
$1,460 USD
As of October 29, 2026
Save £1,845 GBP (63%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £4,075 GBP at MOH London · As of October 29, 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 top-tier cut grade and certified by IGI LG494160318 or 494160318. Listed at 12 retailers as of October 29, 2026, with a 169% 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

1.57
Carat
I
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.2°
Pavilion angle29.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG494160318
Dimensions7.73 × 5.80 × 3.79 mm
L/W Ratio1.33
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.73 mm5.80 mm1.57 ctI / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG494160318
Side View
Table 64.0%Crown 36.2°Girdle: Slightly ThickPavilion 29.6°Culet: NoneDepth 65.3%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: £4,075 GBP|Low: £1,090 GBP|High: £4,102 GBP|Avg: £2,089 GBP|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 29, 2026
Retailer 6£1,090 GBP
Retailer 8£1,223 GBP
Retailer 12£1,331 GBP
Retailer 9£1,420 GBP
Retailer 5£1,506 GBP
Retailer 3£1,545 GBP
Retailer 4£1,902 GBP
Retailer 10£2,230 GBP
Retailer 7£2,447 GBP
Retailer 2£2,609 GBP
Retailer 11£2,660 GBP
Retailer 13£2,935 GBP
MOH London£4,075 GBP

21 data points across 13 retailers

12 retailers£1,090 GBP to £2,935 GBP

B+
Cheapest Retailer
-
£1,090 GBP
$1,460 USD
B
Retailer 2
-
£1,223 GBP
$1,639 USD
View
B
Retailer 3
-
£1,331 GBP
$1,784 USD
View
Retailer 4
-
£1,420 GBP
$1,902 USD
View
Price last confirmed 18 days ago
B
Retailer 5
-
£1,420 GBP
$1,902 USD
View
B
Retailer 6
-
£1,545 GBP
$2,070 USD
View
B
Retailer 7
-
£2,230 GBP
$2,988 USD
View
B
Retailer 8
-
£2,447 GBP
$3,279 USD
View
B
Retailer 9
-
£2,609 GBP
ZAR 56,474 ZAR
View
B
Retailer 10
-
£2,660 GBP
$3,564 USD
View
B
Retailer 11
-
£2,935 GBP
View
Most Expensive
MOH London
LG494160318 · Oct 29
£4,075 GBP
View
Price under review
11 more retailers have this diamond
Prices start from £1,090 GBPSave up to £1,845 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.

B+
1.57ct Radiant
£1,090 GBP