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Round|Lab Grown|IGI

2.57ct J VS1 Round Lab Grown Diamond

EX • J/VS1 • IGI LG517284965

Shape and cutting style on the report: Round brilliant

Certificate IGI LG517284965

Diamond specifications and retailer prices

From £442 GBP
$592 USD
As of October 29, 2026
Save £1,949 GBP (82%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £2,390 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 2.57ct lab-grown round diamond

This 2.57ct lab-grown round sits in the two to three carat band, graded J colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG517284965 or 517284965. Listed at 14 retailers as of October 29, 2026, with prices from £442 to £2,390, a £1,949 spread on the same certified stone. MOH London lists it at £2,390. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

2.57
Carat
J
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.7°
Pavilion angle41.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG517284965
Dimensions8.74 × 8.69 × 5.47 mm
L/W Ratio1.01
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 Type IIa
Top View
8.74 mm8.69 mm2.57 ctJ / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG517284965
Side View
Table 58.5%Crown 35.7°Girdle: MED-STKPavilion 41.3°Culet: NoneDepth 62.8%

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: £2,390 GBP|Low: £424 GBP|High: £2,407 GBP|Avg: £1,073 GBP|+0.6%
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
Retailer 14
October 29, 2026
Retailer 9£442 GBP
Retailer 13£494 GBP
Retailer 10£548 GBP
Retailer 14£548 GBP
Retailer 7£646 GBP
Retailer 12£737 GBP
Retailer 11£840 GBP
Retailer 3£894 GBP
Retailer 2£1,322 GBP
Retailer 6£1,323 GBP
Retailer 8£1,359 GBP
Retailer 4£1,772 GBP
Retailer 5£1,834 GBP
MOH London£2,390 GBP

27 data points across 14 retailers

14 retailers£442 GBP to £2,390 GBP

A
Cheapest Retailer
-
£442 GBP
$592 USD
A
Retailer 2
-
£494 GBP
$662 USD
View
Final sale: no returns
A
Retailer 3
-
£495 GBP
$663 USD
View
A
Retailer 4
-
£548 GBP
$734 USD
View
Retailer 5
-
£548 GBP
$734 USD
View
Price last confirmed 14 days ago
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Retailer 6
-
£646 GBP
$865 USD
View
A
Retailer 7
-
£737 GBP
$987 USD
View
A
Retailer 8
-
£840 GBP
$1,126 USD
View
A
Retailer 9
-
£894 GBP
$1,198 USD
View
A
Retailer 10
-
£1,322 GBP
ZAR 28,606 ZAR
View
A
Retailer 11
-
£1,359 GBP
$1,821 USD
View
A
Retailer 12
-
£1,440 GBP
$1,930 USD
View
A
Retailer 13
-
£1,772 GBP
$2,374 USD
View
Most Expensive
A
MOH London
LG517284965 · Oct 29
£2,390 GBP
View
13 more retailers have this diamond
Prices start from £442 GBPSave up to £1,949 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
2.57ct Round
£442 GBP