CaratHunter
Plans
Radiant|Lab Grown|IGI

1.09ct E SI2 Radiant Lab Grown Diamond

ID • E/SI2 • IGI LG634405513

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

Certificate IGI LG634405513

Diamond specifications and retailer prices

From $217 USD
As of October 27, 2026
Save $869 USD (80%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $1,086 USD at MOH London · As of October 29, 2026
View at MOH London

About this 1.09ct lab-grown radiant diamond

This 1.09ct lab-grown radiant sits in the classic one-carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG634405513 or 634405513. Listed at 14 retailers as of October 27, 2026, with prices from $217 to $1,086, a $869 spread on the same certified stone. MOH London lists it at $1,086. 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

1.09
Carat
E
Color
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.8°
Pavilion angle33.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG634405513
Dimensions6.62 × 5.03 × 3.63 mm
L/W Ratio1.32
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
6.62 mm5.03 mm1.09 ctE / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG634405513
Side View
Table 65.0%Crown 40.8°Girdle: STK-THKPavilion 33.4°Culet: NoneDepth 72.2%

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: Oct 27
Current: $1,086 USD|Low: $138 USD|High: $1,093 USD|Avg: $552 USD|-0.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 29, 2026
Retailer 10$138 USD
Retailer 9$242 USD
Retailer 7$320 USD
Retailer 6$462 USD
Retailer 2$500 USD
Retailer 8$507 USD
Retailer 5$866 USD
Retailer 3$870 USD
Retailer 4$880 USD
MOH London$1,086 USD

41 data points across 10 retailers

14 retailers$217 USD to $1,086 USD

A
Cheapest Retailer
-
$217 USD
A
Retailer 2
-
$242 USD
View
Final sale: no returns
A
Retailer 3
-
$252 USD
View
A
Retailer 4
-
$270 USD
View
A
Retailer 5
-
$270 USD
View
A
Retailer 6
-
$320 USD
View
B+
Retailer 7
-
$462 USD
View
B+
Retailer 8
-
$500 USD
£394 GBP
View
B+
Retailer 9
-
$507 USD
View
B
Retailer 10
-
$563 USD
HK$4,400 HKD
View
B
Retailer 11
-
$866 USD
View
B
Retailer 12
-
$870 USD
View
B
Retailer 13
-
$880 USD
View
Most Expensive
B
MOH London
LG634405513 · Oct 29
$1,086 USD
£855 GBP
View
13 more retailers have this diamond
Prices start from $217 USDSave up to $869 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
1.09ct Radiant
$217 USD