Radiant|Lab Grown|IGI

1.05ct E SI1 Radiant Lab Grown Diamond

VG • E/SI1 • IGI LG644487427

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

Certificate IGI LG644487427

Diamond specifications and retailer prices

From $157 USD
As of October 25, 2026
Save $1,159 USD (88%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $1,316 USD at MOH London · As of October 29, 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 very-good cut grade and certified by IGI LG644487427 or 644487427. Listed at 15 retailers as of October 25, 2026, with prices from $157 to $1,316, a $1,159 spread on the same certified stone. MOH London lists it at $1,316. 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
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle45.1°
Pavilion angle34.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG644487427
Dimensions7.40 × 4.89 × 3.34 mm
L/W Ratio1.51
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.40 mm4.89 mm1.05 ctE / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG644487427
Side View
Table 65.0%Crown 45.1°Girdle: MED-STKPavilion 34.6°Culet: NoneDepth 68.3%

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 25
Current: $1,316 USD|Low: $147 USD|High: $1,325 USD|Avg: $398 USD|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
October 29, 2026
Retailer 3$147 USD
Retailer 4$155 USD
Retailer 8$157 USD
Retailer 12$204 USD
Retailer 2$260 USD
Retailer 7$298 USD
Retailer 13$299 USD
Retailer 6$302 USD
Retailer 11$308 USD
Retailer 10$465 USD
Retailer 5$481 USD
Retailer 9$532 USD
Retailer 14$590 USD
MOH London$1,316 USD

35 data points across 14 retailers

15 retailers$157 USD to $1,316 USD

A
Retailer 1
-
$147 USD
Price last confirmed 32 days ago
A
Retailer 2
-
$155 USD
View
Price last confirmed 32 days ago
A
Retailer 3
-
$157 USD
View
A
Retailer 4
-
$204 USD
£161 GBP
View
Price last confirmed 12 days ago
A
Retailer 5
-
$260 USD
£205 GBP
View
A
Retailer 6
-
$298 USD
£235 GBP
View
B+
Retailer 7
-
$299 USD
View
B+
Retailer 8
-
$302 USD
View
B+
Retailer 9
-
$308 USD
€293 EUR
View
B+
Retailer 10
-
$465 USD
View
Price last confirmed 8 days ago
B+
Retailer 11
-
$481 USD
View
B
Retailer 12
-
$532 USD
View
B+
Retailer 13
-
$574 USD
£452 GBP
View
B
Retailer 14
-
$590 USD
View
Most Expensive
B
MOH London
LG644487427 · Oct 29
$1,316 USD
£1,036 GBP
View
14 more retailers have this diamond
Prices start from $157 USDSave up to $1,159 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
$157 USD