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Round|Lab Grown|IGI

2.57ct D SI1 Round Lab Grown Diamond

EX • D/SI1 • IGI LG848662950

Shape and cutting style on the report: Round brilliant

Certificate IGI LG848662950

Diamond specifications and retailer prices

From $600 USD
€571 EUR
As of October 29, 2026
Save $1,610 USD (73%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $2,210 USD at Brilliant Earth · As of October 30, 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 D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG848662950 or 848662950. Listed at 4 retailers as of October 29, 2026, with prices from $600 to $2,210, a $1,610 spread on the same certified stone. Brilliant Earth lists it at $2,210. 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
D
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.1°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG848662950
Dimensions8.93 × 8.86 × 5.30 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.93 mm8.86 mm2.57 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG848662950
Side View
Table 61.0%Crown 32.1°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 59.6%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 29
Current: $2,210 USD|Low: $597 USD|High: $3,690 USD|Avg: $1,822 USD|-40.1%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
October 30, 2026
Retailer 2$600 USD
Retailer 3$744 USD
Retailer 4$1,473 USD
Brilliant Earth$2,210 USD

6 data points across 4 retailers

4 retailers$600 USD to $2,210 USD

A
Cheapest Retailer
-
$600 USD
€571 EUR
A
Retailer 2
-
$744 USD
View
B
Retailer 3
-
$1,473 USD
£1,160 GBP
View
Most Expensive
B
Brilliant Earth
22258634A · Oct 30
$2,210 USD
View
3 more retailers have this diamond
Prices start from $600 USDSave up to $1,610 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 Round
$600 USD