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Radiant|Lab Grown|IGI

1.55ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG743509309

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

Certificate IGI LG743509309

Diamond specifications and retailer prices

From €280 EUR
As of November 4, 2026
Save €2,312 EUR (89%) vs most expensive(unlock to see where)
31 retailers carry this diamond
Most expensive: €2,592 EUR at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

About this 1.55ct lab-grown radiant diamond

This 1.55ct lab-grown radiant sits in the one-and-a-half to two carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG743509309 or 743509309. Listed at 31 retailers as of November 4, 2026, with prices from €280 to €2,592, a €2,312 spread on the same certified stone. Brilliant Earth lists it at €2,592. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.55
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.5°
Pavilion angle32.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG743509309
Dimensions8.16 × 5.85 × 3.74 mm
L/W Ratio1.39
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
8.16 mm5.85 mm1.55 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG743509309
Side View
Table 65.0%Crown 42.5°Girdle: MED-STKPavilion 32.7°Culet: NoneDepth 63.9%

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 4
Current: €2,592 EUR|Low: €280 EUR|High: €3,710 EUR|Avg: €1,052 EUR|-30.1%
Brilliant Earth
Retailer 2
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Retailer 22
November 5, 2026
Retailer 18€280 EUR
Retailer 19€313 EUR
Retailer 17€398 EUR
Retailer 16€484 EUR
Retailer 21€488 EUR
Retailer 6€564 EUR
Retailer 15€590 EUR
Retailer 2€612 EUR
Retailer 11€622 EUR
Retailer 9€780 EUR
Retailer 5€814 EUR
Retailer 14€947 EUR
Retailer 22€1,017 EUR
Retailer 20€1,115 EUR
Retailer 7€1,153 EUR
Retailer 10€1,155 EUR
Retailer 4€1,161 EUR
Retailer 8€1,333 EUR
Retailer 3€1,385 EUR
Retailer 13€1,385 EUR
Retailer 12€2,285 EUR
Brilliant Earth€2,592 EUR

34 data points across 22 retailers

31 retailers€280 EUR to €2,592 EUR

A
Cheapest Retailer
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€280 EUR
Retailer 2
-
€291 EUR
View
Price last confirmed 28 days ago
Retailer 3
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€310 EUR
View
Price last confirmed 36 days ago
A
Retailer 4
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€313 EUR
View
Final sale: no returns
Retailer 5
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€359 EUR
View
Price last confirmed 39 days ago
Retailer 6
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€361 EUR
View
Price last confirmed 33 days ago
Retailer 7
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€379 EUR
View
Price last confirmed 39 days ago
Retailer 8
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€379 EUR
View
Price last confirmed 36 days ago
A
Retailer 9
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€398 EUR
View
A
Retailer 10
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€484 EUR
View
A
Retailer 11
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€488 EUR
View
A
Retailer 12
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€564 EUR
View
A
Retailer 13
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€590 EUR
View
A
Retailer 14
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€612 EUR
View
A
Retailer 15
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€622 EUR
View
A
Retailer 16
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€780 EUR
View
A
Retailer 17
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€814 EUR
View
B+
Retailer 18
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€947 EUR
View
B+
Retailer 19
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€1,017 EUR
View
B+
Retailer 20
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€1,115 EUR
View
B+
Retailer 21
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€1,153 EUR
View
B+
Retailer 22
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€1,155 EUR
View
Retailer 23
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€1,161 EUR
View
Price last confirmed 26 days ago
B+
Retailer 24
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€1,161 EUR
View
Retailer 25
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€1,235 EUR
View
Price last confirmed 36 days ago
B+
Retailer 26
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€1,333 EUR
View
B+
Retailer 27
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€1,385 EUR
View
B+
Retailer 28
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€1,385 EUR
View
Retailer 29
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€1,497 EUR
View
Price last confirmed 34 days ago
Retailer 30
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€2,285 EUR
View
Price last confirmed 8 days ago
Most Expensive
B
Brilliant Earth
16656137A · Nov 4
€2,592 EUR
$2,920 USD
View
30 more retailers have this diamond
Prices start from €280 EURSave up to €2,312 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
1.55ct Radiant
€280 EUR