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Radiant|Lab Grown|IGI

1.09ct F SI1 Radiant Lab Grown Diamond

VG • F/SI1 • IGI LG830647097

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

Certificate IGI LG830647097

Diamond specifications and retailer prices

From $140 USD
As of November 2, 2026
Save $675 USD (83%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $815 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 F colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG830647097 or 830647097. Listed at 11 retailers as of October 29, 2026, with prices from $140 to $815, a $675 spread on the same certified stone. MOH London lists it at $815. 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

1.09
Carat
F
Color
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.8°
Pavilion angle35.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG830647097
Dimensions7.25 × 5.07 × 3.47 mm
L/W Ratio1.43
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.25 mm5.07 mm1.09 ctF / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG830647097
Side View
Table 66.0%Crown 43.8°Girdle: MediumPavilion 35.5°Culet: NoneDepth 68.4%

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: Nov 2
Current: $815 USD|Low: $134 USD|High: $1,415 USD|Avg: $452 USD|-42.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 31, 2026
Retailer 5$140 USD
Retailer 9$162 USD
Retailer 3$226 USD
Retailer 2$309 USD
Retailer 6$430 USD
Retailer 10$497 USD
Retailer 7$558 USD
Retailer 8$586 USD
Retailer 4$589 USD
MOH London$815 USD

27 data points across 10 retailers

11 retailers$140 USD to $815 USD

A
Cheapest Retailer
-
$140 USD
A
Retailer 2
-
$162 USD
View
Retailer 3
-
$226 USD
£178 GBP
View
Price last confirmed 16 days ago
A
Retailer 4
-
$309 USD
€294 EUR
View
B+
Retailer 5
-
$420 USD
View
B+
Retailer 6
-
$430 USD
View
B+
Retailer 7
-
$497 USD
View
B
Retailer 8
-
$558 USD
View
Retailer 9
-
$586 USD
SGD 792 SGD
View
Price last confirmed 20 days ago
B
Retailer 10
-
$589 USD
View
Most Expensive
B
MOH London
LG830647097 · Oct 29
$815 USD
£642 GBP
View
10 more retailers have this diamond
Prices start from $140 USDSave up to $675 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
$140 USD