CaratHunter
Plans
Radiant|Lab Grown|IGI

2.31ct E SI1 Radiant Lab Grown Diamond

ID • E/SI1 • IGI LG666437106

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

Certificate IGI LG666437106

Diamond specifications and retailer prices

From $1,850 USD
As of October 30, 2026
Save $145 USD (7%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $1,995 USD at Diamond Quarter · As of October 29, 2026
View at Diamond Quarter

About this 2.31ct lab-grown radiant diamond

This 2.31ct lab-grown radiant 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 LG666437106 or 666437106. Listed at 2 retailers as of October 29, 2026, with a relatively tight 8% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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

2.31
Carat
E
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.8°
Pavilion angle36.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG666437106
Dimensions9.44 × 6.53 × 4.43 mm
L/W Ratio1.45
Culet sizeNone
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.44 mm6.53 mm2.31 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG666437106
Side View
Table 65.0%Crown 43.8°Girdle: ThinPavilion 36.4°Culet: NoneDepth 67.8%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $1,850 USD|Low: $1,850 USD|High: $3,240 USD|Avg: $2,545 USD|-42.9%
October 30, 2026
Retailer 1$1,850 USD

2 data points across 1 retailer

2 retailers$1,850 USD to $1,995 USD

B
Cheapest Retailer
-
$1,850 USD
Most Expensive
B
Diamond Quarter
2.31SI1ELG06D736N · Oct 29
$1,995 USD
£1,571 GBP
View
1 more retailer has this diamond
Prices start from $1,850 USDSave up to $145 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.

B
2.31ct Radiant
$1,850 USD