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Radiant|Lab Grown|IGI

1.09ct D SI2 Radiant Lab Grown Diamond

ID • D/SI2 • IGI LG529266600

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

Certificate IGI LG529266600

Diamond specifications and retailer prices

From $155 USD
As of October 30, 2026
Save $742 USD (83%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $897 USD at MOH London · As of November 1, 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 D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG529266600 or 529266600. Listed at 17 retailers as of October 30, 2026, with prices from $155 to $897, a $742 spread on the same certified stone. MOH London lists it at $897. 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
D
Color
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.6°
Pavilion angle35.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG529266600
Dimensions7.35 × 5.16 × 3.42 mm
L/W Ratio1.42
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
7.35 mm5.16 mm1.09 ctD / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG529266600
Side View
Table 64.0%Crown 40.6°Girdle: Slightly ThickPavilion 35.3°Culet: NoneDepth 66.3%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: $897 USD|Low: $153 USD|High: $940 USD|Avg: $402 USD|-3.3%
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
Retailer 15
Retailer 16
Retailer 17
November 1, 2026
Retailer 6$155 USD
Retailer 7$173 USD
Retailer 4$180 USD
Retailer 14$192 USD
Retailer 9$198 USD
Retailer 2$256 USD
Retailer 3$260 USD
Retailer 5$322 USD
Retailer 10$333 USD
Retailer 17$364 USD
Retailer 11$371 USD
Retailer 15$438 USD
Retailer 8$495 USD
Retailer 12$497 USD
Retailer 16$617 USD
Retailer 13$660 USD
MOH London$897 USD

44 data points across 17 retailers

17 retailers$155 USD to $897 USD

A
Cheapest Retailer
-
$155 USD
A
Retailer 2
-
$173 USD
View
Final sale: no returns
A
Retailer 3
-
$180 USD
View
A
Retailer 4
-
$192 USD
View
Retailer 5
-
$198 USD
View
Price last confirmed 7 days ago
A
Retailer 6
-
$256 USD
£202 GBP
View
B+
Retailer 7
-
$260 USD
View
A
Retailer 8
-
$322 USD
View
A
Retailer 9
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$333 USD
£262 GBP
View
A
Retailer 10
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$364 USD
£287 GBP
View
A
Retailer 11
-
$371 USD
€353 EUR
View
B+
Retailer 12
-
$438 USD
View
Retailer 13
-
$495 USD
View
Price last confirmed 10 days ago
B+
Retailer 14
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$497 USD
View
B+
Retailer 15
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$617 USD
View
B+
Retailer 16
-
$660 USD
View
Most Expensive
B
MOH London
LG529266600 · Nov 1
$897 USD
£706 GBP
View
16 more retailers have this diamond
Prices start from $155 USDSave up to $742 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
$155 USD