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Radiant|Lab Grown|IGI

1.09ct F SI1 Radiant Lab Grown Diamond

ID • F/SI1 • IGI LG566310953

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

Certificate IGI LG566310953

Diamond specifications and retailer prices

From $140 USD
As of November 2, 2026
Save $1,210 USD (90%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $1,350 USD at Do Amore Diamonds · As of November 2, 2026
View at Do Amore Diamonds

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 top-tier cut grade and certified by IGI LG566310953 or 566310953. Listed at 15 retailers as of November 2, 2026, with prices from $140 to $1,350, a $1,210 spread on the same certified stone. Do Amore Diamonds lists it at $1,350. 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
F
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.6°
Pavilion angle35°
OriginLab Grown
Grading LabIGI
CertificateIGI LG566310953
Dimensions7.48 × 4.99 × 3.41 mm
L/W Ratio1.50
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
7.48 mm4.99 mm1.09 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG566310953
Side View
Table 66.0%Crown 42.6°Girdle: MediumPavilion 35°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: Nov 2
Current: $249 USD|Low: $135 USD|High: $909 USD|Avg: $358 USD|-1.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 2, 2026
Retailer 10$140 USD
Retailer 4$157 USD
Retailer 2$163 USD
Retailer 3$174 USD
Retailer 11$174 USD
Retailer 1$249 USD
Retailer 13$324 USD
Retailer 6$336 USD
Retailer 7$365 USD
Retailer 5$498 USD
Retailer 9$592 USD
Retailer 12$618 USD
Retailer 8$904 USD

45 data points across 13 retailers

15 retailers$140 USD to $1,350 USD

A
Cheapest Retailer
-
$140 USD
A
Retailer 2
-
$157 USD
View
Final sale: no returns
A
Retailer 3
-
$163 USD
View
Retailer 4
-
$174 USD
View
Price last confirmed 8 days ago
A
Retailer 5
-
$174 USD
View
A
Retailer 6
-
$249 USD
£196 GBP
View
A
Retailer 7
-
$263 USD
View
B+
Retailer 8
-
$324 USD
View
A
Retailer 9
-
$336 USD
£265 GBP
View
A
Retailer 10
-
$365 USD
£288 GBP
View
B+
Retailer 11
-
$498 USD
View
B+
Retailer 12
-
$592 USD
View
B
Retailer 13
-
$618 USD
View
B
Retailer 14
-
$904 USD
£712 GBP
View
Most Expensive
B
Do Amore Diamonds
27-965C3C97B · Nov 2
$1,350 USD
View
14 more retailers have this diamond
Prices start from $140 USDSave up to $1,210 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