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Round|Lab Grown|IGI

2.57ct J VS1 Round Lab Grown Diamond

ID • J/VS1 • IGI LG517284792

Shape and cutting style on the report: Round brilliant

Certificate IGI LG517284792

Diamond specifications and retailer prices

From $1,050 NZD
$592 USD
As of October 29, 2026
Save $4,610 NZD (81%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $9,606 NZD at Rare Carat · As of July 12, 2026
View at Rare Carat

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 LG517284792 or 517284792. Listed at 15 retailers as of October 26, 2026, with a 439% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.4°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG517284792
Dimensions8.79 × 8.75 × 5.45 mm
L/W Ratio1.00
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
8.79 mm8.75 mm2.57 ctJ / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG517284792
Side View
Table 56.5%Crown 34.4°Girdle: MediumPavilion 41°Culet: NoneDepth 62.2%

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: $9,606 NZD|Low: $1,050 NZD|High: $9,606 NZD|Avg: $3,189 NZD
Rare Carat
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 9$1,050 NZD
Retailer 13$1,175 NZD
Retailer 10$1,302 NZD
Retailer 6$1,535 NZD
Retailer 12$1,751 NZD
Retailer 11$1,998 NZD
Retailer 3$2,126 NZD
Retailer 5$2,726 NZD
Retailer 2$3,142 NZD
Retailer 8$3,231 NZD
Retailer 4$4,213 NZD
Retailer 7$5,660 NZD
Rare Carat$9,606 NZD

24 data points across 13 retailers

15 retailers$1,050 NZD to $5,660 NZD

A
Cheapest Retailer
-
$1,050 NZD
$592 USD
A
Retailer 2
-
$1,175 NZD
$662 USD
View
Final sale: no returns
A
Retailer 3
-
$1,176 NZD
$663 USD
View
Retailer 4
-
$1,302 NZD
$734 USD
View
Price last confirmed 15 days ago
A
Retailer 5
-
$1,302 NZD
$734 USD
View
A
Retailer 6
-
$1,535 NZD
$865 USD
View
A
Retailer 7
-
$1,751 NZD
$987 USD
View
A
Retailer 8
-
$1,998 NZD
$1,126 USD
View
A
Retailer 9
-
$2,126 NZD
$1,198 USD
View
A
Retailer 10
-
$3,142 NZD
ZAR 28,606 ZAR
View
A
Retailer 11
-
$3,231 NZD
$1,821 USD
View
A
Retailer 12
-
$3,424 NZD
$1,930 USD
View
A
Retailer 13
-
$4,213 NZD
$2,374 USD
View
A
Retailer 14
-
$5,660 NZD
£2,512 GBP
View
Most Expensive
Rare Carat
919459 · Jul 12
$9,606 NZD
$5,414 USD
View
Price last confirmed 110 days ago
14 more retailers have this diamond
Prices start from $1,050 NZDSave up to $4,610 NZD

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
$1,050 NZD