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1.00ct E SI1 Round Lab Grown Diamond

EX • E/SI1 • IGI LG842651305

Shape and cutting style on the report: Round brilliant

Certificate IGI LG842651305

Diamond specifications and retailer prices

From $148 USD
As of November 5, 2026
Save $1,232 USD (89%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $1,380 USD at MOH London · As of November 5, 2026
View at MOH London

About this 1ct lab-grown round diamond

This 1ct lab-grown round sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG842651305 or 842651305. Listed at 9 retailers as of November 5, 2026, with prices from $148 to $1,380, a $1,232 spread on the same certified stone. MOH London lists it at $1,380. 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

1.00
Carat
E
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.6°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG842651305
Dimensions6.46 × 6.49 × 3.91 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
6.46 mm6.49 mm1.00 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG842651305
Side View
Table 60.0%Crown 32.6°Girdle: MediumPavilion 41.2°Culet: NoneDepth 60.5%

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: $1,380 USD|Low: $148 USD|High: $1,424 USD|Avg: $497 USD|+68.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 5, 2026
Retailer 8$148 USD
Retailer 5$225 USD
Retailer 6$265 USD
Retailer 3$276 USD
Retailer 2$321 USD
Retailer 7$563 USD
Retailer 9$589 USD
Retailer 4$982 USD
MOH London$1,380 USD

27 data points across 9 retailers

9 retailers$148 USD to $1,380 USD

A
Cheapest Retailer
-
$148 USD
Final sale: no returns
B+
Retailer 2
-
$225 USD
View
A
Retailer 3
-
$265 USD
View
A
Retailer 4
-
$276 USD
View
A
Retailer 5
-
$321 USD
View
B
Retailer 6
-
$563 USD
View
B
Retailer 7
-
$589 USD
View
B
Retailer 8
-
$982 USD
View
Most Expensive
C
MOH London
LG842651305 · Nov 5
$1,380 USD
£1,087 GBP
View
8 more retailers have this diamond
Prices start from $148 USDSave up to $1,232 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
1.00ct Round
$148 USD