Oval|Lab Grown|IGI

2.57ct E SI1 Oval Lab Grown Diamond

ID • E/SI1 • IGI LG618405396

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG618405396

Diamond specifications and retailer prices

From $371 USD
As of October 25, 2026
Save $2,279 USD (86%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $2,650 USD at Brilliant Earth · As of October 26, 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 LG618405396 or 618405396. Listed at 14 retailers as of October 25, 2026, with prices from $371 to $2,650, a $2,279 spread on the same certified stone. Brilliant Earth lists it at $2,650. 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
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.9°
Pavilion angle41.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG618405396
Dimensions10.87 × 7.80 × 4.87 mm
L/W Ratio1.39
Girdle conditionFaceted
Top View
10.87 mm7.80 mm2.57 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG618405396
Side View
Table 61.0%Crown 35.9°Girdle: MED-STKPavilion 41.5°Culet: NoneDepth 62.4%

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 25
Current: $2,650 USD|Low: $287 USD|High: $2,980 USD|Avg: $860 USD|-11.1%
Brilliant Earth
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
Retailer 15
October 26, 2026
Retailer 7$299 USD
Retailer 10$347 USD
Retailer 4$371 USD
Retailer 15$371 USD
Retailer 14$467 USD
Retailer 9$560 USD
Retailer 5$606 USD
Retailer 2$645 USD
Retailer 12$670 USD
Retailer 3$747 USD
Retailer 13$823 USD
Retailer 11$1,139 USD
Retailer 6$1,192 USD
Retailer 8$1,487 USD
Brilliant Earth$2,650 USD

33 data points across 15 retailers

14 retailers$371 USD to $2,650 USD

Retailer 1
-
$299 USD
Price last confirmed 8 days ago
Retailer 2
-
$347 USD
View
Price last confirmed 7 days ago
A
Retailer 3
-
$371 USD
View
A
Retailer 4
-
$371 USD
View
Retailer 5
-
$467 USD
£367 GBP
View
Price last confirmed 14 days ago
A
Retailer 6
-
$560 USD
View
B+
Retailer 7
-
$606 USD
View
A
Retailer 8
-
$645 USD
£508 GBP
View
A
Retailer 9
-
$747 USD
View
B+
Retailer 10
-
$823 USD
View
B+
Retailer 11
-
$1,139 USD
View
B+
Retailer 12
-
$1,192 USD
View
B
Retailer 13
-
$1,487 USD
£1,171 GBP
View
Most Expensive
B
Brilliant Earth
9066350A · Oct 26
$2,650 USD
View
13 more retailers have this diamond
Prices start from $371 USDSave up to $2,279 USD

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
$371 USD