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Oval|Lab Grown|IGI

2.57ct E SI1 Oval Lab Grown Diamond

ID • E/SI1 • IGI LG713594299

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG713594299

Diamond specifications and retailer prices

From $596 NZD
$336 USD
As of October 31, 2026
Save $3,414 NZD (85%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $4,010 NZD at Brilliant Earth · As of October 28, 2026
View at Brilliant Earth

About this 2.57ct lab-grown oval diamond

This 2.57ct lab-grown oval sits in the two to three carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG713594299 or 713594299. Listed at 5 retailers as of October 28, 2026, with prices from $596 to $4,010, a $3,414 spread on the same certified stone. Brilliant Earth lists it at $4,010. 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

2.57
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.4°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG713594299
Dimensions10.88 × 7.33 × 4.92 mm
L/W Ratio1.48
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.88 mm7.33 mm2.57 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG713594299
Side View
Table 59.0%Crown 38.4°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 67.1%

Caratlytics Score

How it works →
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 31
Current: $4,010 NZD|Low: $596 NZD|High: $4,116 NZD|Avg: $1,897 NZD|-2.6%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 18, 2026
Retailer 6$596 NZD
Retailer 11$1,191 NZD
Retailer 7$1,274 NZD
Retailer 8$1,313 NZD
Retailer 5$1,506 NZD
Retailer 10$1,639 NZD
Retailer 9$1,767 NZD
Retailer 4$1,781 NZD
Retailer 3$2,636 NZD
Retailer 2$3,087 NZD
Brilliant Earth$4,010 NZD

9 data points across 11 retailers

5 retailers$596 NZD to $4,010 NZD

A
Cheapest Retailer
-
$596 NZD
$336 USD
Final sale: no returns
B+
Retailer 2
-
$1,506 NZD
$849 USD
View
B+
Retailer 3
-
$1,781 NZD
$1,004 USD
View
B
Retailer 4
-
$3,087 NZD
$1,740 USD
View
Most Expensive
B
Brilliant Earth
15304521A · Oct 28
$4,010 NZD
$2,260 USD
View
4 more retailers have this diamond
Prices start from $596 NZDSave up to $3,414 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 Oval
$596 NZD