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 €294 EUR
$328 USD
As of October 30, 2026
Save €2,320 EUR (89%) vs most expensive(unlock to see where)
31 retailers carry this diamond
Most expensive: €2,614 EUR at Brilliant Earth · As of October 30, 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 October 30, 2026, with prices from €294 to €2,614, a €2,320 spread on the same certified stone. Brilliant Earth lists it at €2,614. 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
Color
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

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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: Oct 30
Current: €2,614 EUR|Low: €294 EUR|High: €3,849 EUR|Avg: €1,069 EUR|-32.1%
Brilliant Earth
Retailer 2
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Retailer 22
October 31, 2026
Retailer 3€294 EUR
Retailer 13€328 EUR
Retailer 10€424 EUR
Retailer 18€461 EUR
Retailer 4€512 EUR
Retailer 21€589 EUR
Retailer 8€595 EUR
Retailer 17€626 EUR
Retailer 2€652 EUR
Retailer 9€824 EUR
Retailer 19€847 EUR
Retailer 5€955 EUR
Retailer 22€1,069 EUR
Retailer 12€1,211 EUR
Retailer 15€1,217 EUR
Retailer 14€1,218 EUR
Retailer 7€1,376 EUR
Retailer 6€1,435 EUR
Retailer 16€1,468 EUR
Retailer 11€1,510 EUR
Retailer 20€2,305 EUR
Brilliant Earth€2,614 EUR

35 data points across 22 retailers

31 retailers€294 EUR to €2,614 EUR

A
Cheapest Retailer
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€294 EUR
$328 USD
Retailer 2
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€294 EUR
$328 USD
View
Price last confirmed 24 days ago
Retailer 3
-
€312 EUR
$349 USD
View
Price last confirmed 33 days ago
A
Retailer 4
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€328 EUR
$367 USD
View
Final sale: no returns
Retailer 5
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€363 EUR
$405 USD
View
Price last confirmed 35 days ago
Retailer 6
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€364 EUR
$407 USD
View
Price last confirmed 29 days ago
Retailer 7
-
€382 EUR
$427 USD
View
Price last confirmed 35 days ago
Retailer 8
-
€382 EUR
$427 USD
View
Price last confirmed 32 days ago
A
Retailer 9
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€424 EUR
HK$3,700 HKD
View
A
Retailer 10
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€461 EUR
$515 USD
View
A
Retailer 11
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€512 EUR
$572 USD
View
Retailer 12
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€589 EUR
View
Price last confirmed 9 days ago
A
Retailer 13
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€595 EUR
$665 USD
View
A
Retailer 14
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€626 EUR
ZAR 11,299 ZAR
View
A
Retailer 15
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€652 EUR
£573 GBP
View
A
Retailer 16
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€824 EUR
$921 USD
View
A
Retailer 17
-
€847 EUR
A$1,456 AUD
View
B+
Retailer 18
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€955 EUR
$1,067 USD
View
B+
Retailer 19
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€1,069 EUR
$1,194 USD
View
B+
Retailer 20
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€1,171 EUR
$1,308 USD
View
Retailer 21
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€1,171 EUR
$1,308 USD
View
Price last confirmed 22 days ago
B+
Retailer 22
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€1,211 EUR
$1,353 USD
View
B+
Retailer 23
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€1,217 EUR
$1,360 USD
View
B+
Retailer 24
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€1,218 EUR
SGD 1,839 SGD
View
Retailer 25
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€1,245 EUR
$1,391 USD
View
Price last confirmed 32 days ago
B+
Retailer 26
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€1,376 EUR
$1,537 USD
View
B+
Retailer 27
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€1,435 EUR
$1,603 USD
View
B+
Retailer 28
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€1,468 EUR
£1,291 GBP
View
Retailer 29
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€1,510 EUR
A$2,596 AUD
View
Price last confirmed 30 days ago
B
Retailer 30
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€2,305 EUR
$2,575 USD
View
Most Expensive
B
Brilliant Earth
16656137A · Oct 30
€2,614 EUR
$2,920 USD
View
30 more retailers have this diamond
Prices start from €294 EURSave up to €2,320 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
€294 EUR