Radiant|Lab Grown|IGI

1.05ct E SI1 Radiant Lab Grown Diamond

GD • E/SI1 • IGI LG597376840

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

Certificate IGI LG597376840

Diamond specifications and retailer prices

From $260 USD
£205 GBP
As of October 29, 2026
Save $1,050 USD (80%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $1,311 USD at MOH London · As of October 26, 2026
View at MOH London

About this 1.05ct lab-grown radiant diamond

This 1.05ct lab-grown radiant sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade and certified by IGI LG597376840 or 597376840. Listed at 12 retailers as of October 26, 2026, with prices from $260 to $1,311, a $1,050 spread on the same certified stone. MOH London lists it at $1,311. 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

1.05
Carat
E
Color
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.6°
Pavilion angle35.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG597376840
Dimensions7.33 × 5.03 × 3.38 mm
L/W Ratio1.46
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
7.33 mm5.03 mm1.05 ctE / SI1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG597376840
Side View
Table 64.0%Crown 43.6°Girdle: MediumPavilion 35.4°Culet: NoneDepth 67.2%

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 29
Current: $1,311 USD|Low: $142 USD|High: $1,325 USD|Avg: $446 USD|+0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 29, 2026
Retailer 9$142 USD
Retailer 2$260 USD
Retailer 4$298 USD
Retailer 7$299 USD
Retailer 11$302 USD
Retailer 6$308 USD
Retailer 3$453 USD
Retailer 10$481 USD
Retailer 5$532 USD
Retailer 8$590 USD
MOH London$1,311 USD

34 data points across 11 retailers

12 retailers$260 USD to $1,311 USD

A
Retailer 1
-
$147 USD
Price last confirmed 32 days ago
A
Retailer 2
-
$155 USD
View
Price last confirmed 32 days ago
B+
Retailer 3
-
$260 USD
£205 GBP
View
B+
Retailer 4
-
$298 USD
£235 GBP
View
B
Retailer 5
-
$299 USD
View
B+
Retailer 6
-
$302 USD
View
B+
Retailer 7
-
$308 USD
€293 EUR
View
B+
Retailer 8
-
$481 USD
View
B
Retailer 9
-
$532 USD
View
B
Retailer 10
-
$574 USD
£452 GBP
View
B
Retailer 11
-
$590 USD
View
Most Expensive
B
MOH London
LG597376840 · Oct 26
$1,311 USD
£1,032 GBP
View
11 more retailers have this diamond
Prices start from $260 USDSave up to $1,050 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
1.05ct Radiant
$260 USD