CaratHunter
Plans
Round|Lab Grown|IGI

2.57ct K SI1 Round Lab Grown Diamond

ID • K/SI1 • IGI LG499106400

Shape and cutting style on the report: Round brilliant

Certificate IGI LG499106400

Diamond specifications and retailer prices

From $2,239 USD
As of November 5, 2026
Save $4,807 USD (68%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $7,046 USD at MOH London · As of November 3, 2026
View at MOH London

About this 2.57ct lab-grown round diamond

This 2.57ct lab-grown round sits in the two to three carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG499106400 or 499106400. Listed at 10 retailers as of November 3, 2026, with prices from $2,239 to $7,046, a $4,807 spread on the same certified stone. MOH London lists it at $7,046. 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
K
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.8°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG499106400
Dimensions8.78 × 8.81 × 5.40 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
8.78 mm8.81 mm2.57 ctK / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG499106400
Side View
Table 56.0%Crown 35.8°GirdlePavilion 40.1°Culet: NoneDepth 61.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $7,046 USD|Low: $2,149 USD|High: $7,141 USD|Avg: $3,598 USD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 5, 2026
Retailer 5$2,239 USD
Retailer 2$2,518 USD
Retailer 6$2,597 USD
Retailer 8$2,597 USD
Retailer 3$2,760 USD
Retailer 9$3,313 USD
Retailer 7$4,055 USD
Retailer 4$4,071 USD
MOH London$7,046 USD

40 data points across 9 retailers

10 retailers$2,239 USD to $7,046 USD

A
Cheapest Retailer
-
$2,239 USD
A
Retailer 2
-
$2,436 USD
View
A
Retailer 3
-
$2,518 USD
View
A
Retailer 4
-
$2,597 USD
View
Retailer 5
-
$2,597 USD
View
Price last confirmed 26 days ago
B+
Retailer 6
-
$2,760 USD
View
B
Retailer 7
-
$3,570 USD
View
B
Retailer 8
-
$4,055 USD
View
B
Retailer 9
-
$4,071 USD
View
Most Expensive
B
MOH London
LG499106400 · Nov 3
$7,046 USD
£5,548 GBP
View
9 more retailers have this diamond
Prices start from $2,239 USDSave up to $4,807 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
$2,239 USD