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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 €139 EUR
$155 USD
As of October 30, 2026
Save €668 EUR (83%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: €807 EUR 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 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 29, 2026, with prices from €139 to €807, a €668 spread on the same certified stone. MOH London lists it at €807. 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: €807 EUR|Low: €137 EUR|High: €841 EUR|Avg: €360 EUR|-2.7%
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
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Retailer 17
October 31, 2026
Retailer 6€139 EUR
Retailer 7€155 EUR
Retailer 4€161 EUR
Retailer 14€172 EUR
Retailer 9€177 EUR
Retailer 13€230 EUR
Retailer 3€233 EUR
Retailer 5€288 EUR
Retailer 10€298 EUR
Retailer 17€326 EUR
Retailer 2€332 EUR
Retailer 15€392 EUR
Retailer 8€443 EUR
Retailer 11€445 EUR
Retailer 16€552 EUR
Retailer 12€591 EUR
MOH London€807 EUR

44 data points across 17 retailers

17 retailers€139 EUR to €807 EUR

A
Cheapest Retailer
-
€139 EUR
$155 USD
A
Retailer 2
-
€155 EUR
$173 USD
View
Final sale: no returns
A
Retailer 3
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€161 EUR
$180 USD
View
A
Retailer 4
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€172 EUR
$192 USD
View
A
Retailer 5
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€177 EUR
$198 USD
View
A
Retailer 6
-
€230 EUR
£202 GBP
View
B+
Retailer 7
-
€233 EUR
$260 USD
View
A
Retailer 8
-
€288 EUR
$322 USD
View
A
Retailer 9
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€298 EUR
£262 GBP
View
A
Retailer 10
-
€326 EUR
£287 GBP
View
A
Retailer 11
-
€332 EUR
View
B+
Retailer 12
-
€392 EUR
$438 USD
View
Retailer 13
-
€443 EUR
$495 USD
View
Price last confirmed 10 days ago
B+
Retailer 14
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€445 EUR
$497 USD
View
B+
Retailer 15
-
€552 EUR
$617 USD
View
B+
Retailer 16
-
€591 EUR
$660 USD
View
Most Expensive
B
MOH London
LG529266600 · Oct 29
€807 EUR
£710 GBP
View
16 more retailers have this diamond
Prices start from €139 EURSave up to €668 EUR

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
€139 EUR