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Round|Lab Grown|IGI

2.57ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG833691432

Shape and cutting style on the report: Round brilliant

Certificate IGI LG833691432

Diamond specifications and retailer prices

From $673 SGD
$525 USD
As of October 29, 2026
Save $3,557 SGD (84%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $4,230 SGD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 2.57ct lab-grown round diamond

This 2.57ct lab-grown round 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 LG833691432 or 833691432. Listed at 13 retailers as of October 29, 2026, with prices from $673 to $4,230, a $3,557 spread on the same certified stone. Brilliant Earth lists it at $4,230. 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 angle34.7°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG833691432
Dimensions8.75 × 8.78 × 5.44 mm
L/W Ratio1.00
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.75 mm8.78 mm2.57 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG833691432
Side View
Table 57.0%Crown 34.7°Girdle: MED-STKPavilion 41.1°Culet: NoneDepth 62.1%

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 29
Current: $4,230 SGD|Low: $673 SGD|High: $4,358 SGD|Avg: $1,460 SGD|-2.9%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 5$673 SGD
Retailer 8$718 SGD
Retailer 9$777 SGD
Retailer 4$818 SGD
Retailer 2$841 SGD
Retailer 10$995 SGD
Retailer 7$1,460 SGD
Retailer 3$1,914 SGD
Retailer 6$1,942 SGD
Brilliant Earth$4,230 SGD

29 data points across 10 retailers

13 retailers$673 SGD to $4,230 SGD

Retailer 1
-
$383 SGD
$299 USD
Price last confirmed 35 days ago
Retailer 2
-
$469 SGD
$366 USD
View
Price last confirmed 32 days ago
A
Retailer 3
-
$673 SGD
$525 USD
View
Retailer 4
-
$718 SGD
£441 GBP
View
Price last confirmed 13 days ago
B+
Retailer 5
-
$777 SGD
$606 USD
View
A
Retailer 6
-
$818 SGD
€608 EUR
View
A
Retailer 7
-
$841 SGD
£516 GBP
View
A
Retailer 8
-
$995 SGD
$776 USD
View
B+
Retailer 9
-
$1,460 SGD
$1,139 USD
View
Retailer 10
-
$1,528 SGD
$1,192 USD
View
Price last confirmed 32 days ago
B+
Retailer 11
-
$1,914 SGD
£1,176 GBP
View
Retailer 12
-
$1,942 SGD
$1,515 USD
View
Price last confirmed 9 days ago
Most Expensive
B
Brilliant Earth
21590442A · Oct 29
$4,230 SGD
$3,300 USD
View
12 more retailers have this diamond
Prices start from $673 SGDSave up to $3,557 SGD

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
$673 SGD