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Oval|Lab Grown|IGI

2.57ct E SI1 Oval Lab Grown Diamond

EX • E/SI1 • IGI LG807645529

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG807645529

Diamond specifications and retailer prices

From $3,246 AUD
$2,280 USD
As of October 29, 2026
1 retailer carries this diamond
Only listing: $3,246 AUD at Brilliant Earth
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
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 LG807645529 or 807645529. Listed at a single retailer as of October 29, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.7°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG807645529
Dimensions11.28 × 7.76 × 4.78 mm
L/W Ratio1.45
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.28 mm7.76 mm2.57 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG807645529
Side View
Table 58.0%Crown 35.7°Girdle: MED-STKPavilion 40.4°Culet: NoneDepth 61.6%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 29
Current: $3,246 AUD|Low: $249 AUD|High: $3,246 AUD|Avg: $1,272 AUD
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
September 3, 2026
Retailer 7$249 AUD
Retailer 6$626 AUD
Retailer 4$723 AUD
Retailer 2$888 AUD
Retailer 3$1,149 AUD
Retailer 5$1,274 AUD
Retailer 8$2,690 AUD
Brilliant Earth$3,246 AUD

31 data points across 8 retailers

1 retailer

B
Brilliant Earth
20226504A · Oct 29
$3,246 AUD
$2,280 USD
View

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
2.57ct Oval
$3,246 AUD