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Radiant|Lab Grown|IGI

2.57ct E SI1 Radiant Lab Grown Diamond

VG • E/SI1 • IGI LG485160984

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG485160984

Diamond specifications and retailer prices

From $573 USD
As of October 28, 2026
Save $821 USD (59%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $1,394 USD at MOH London · As of October 26, 2026
View at MOH London

About this 2.57ct lab-grown radiant diamond

This 2.57ct lab-grown radiant sits in the two to three carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG485160984 or 485160984. Listed at 6 retailers as of October 26, 2026, with prices from $573 to $1,394, a $821 spread on the same certified stone. MOH London lists it at $1,394. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

2.57
Carat
E
Color
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.1°
Pavilion angle30.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG485160984
Dimensions8.90 × 6.84 × 4.66 mm
L/W Ratio1.30
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
8.90 mm6.84 mm2.57 ctE / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG485160984
Side View
Table 60.5%Crown 44.1°Girdle: MED-STKPavilion 30.4°Culet: NoneDepth 68.1%

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 28
Current: $1,394 USD|Low: $468 USD|High: $5,320 USD|Avg: $1,528 USD|-1.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 30, 2026
Retailer 3$573 USD
Retailer 2$613 USD
Retailer 5$651 USD
Retailer 4$816 USD
Retailer 6$1,167 USD
MOH London$1,394 USD
Retailer 7$5,320 USD

34 data points across 7 retailers

6 retailers$573 USD to $1,394 USD

B+
Cheapest Retailer
-
$573 USD
A
Retailer 2
-
$613 USD
£482 GBP
View
A
Retailer 3
-
$651 USD
View
B+
Retailer 4
-
$816 USD
View
B
Retailer 5
-
$1,167 USD
View
Most Expensive
B
MOH London
LG485160984 · Oct 26
$1,394 USD
£1,098 GBP
View
5 more retailers have this diamond
Prices start from $573 USDSave up to $821 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 Radiant
$573 USD