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Radiant|Lab Grown|IGI

1.55ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG728538606

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

Certificate IGI LG728538606

Diamond specifications and retailer prices

From €253 EUR
As of November 4, 2026
Save €2,330 EUR (90%) vs most expensive(unlock to see where)
30 retailers carry this diamond
Most expensive: €2,583 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 LG728538606 or 728538606. Listed at 30 retailers as of November 4, 2026, with prices from €253 to €2,583, a €2,330 spread on the same certified stone. Brilliant Earth lists it at €2,583. 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 angle39.4°
Pavilion angle34.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG728538606
Dimensions8.14 × 5.88 × 3.88 mm
L/W Ratio1.38
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
8.14 mm5.88 mm1.55 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG728538606
Side View
Table 64.0%Crown 39.4°Girdle: MediumPavilion 34.6°Culet: NoneDepth 66.0%

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: Nov 4
Current: €2,583 EUR|Low: €253 EUR|High: €2,973 EUR|Avg: €1,091 EUR|-13.1%
Brilliant Earth
Retailer 2
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Retailer 23
November 5, 2026
Retailer 19€253 EUR
Retailer 9€302 EUR
Retailer 17€453 EUR
Retailer 18€465 EUR
Retailer 21€488 EUR
Retailer 16€559 EUR
Retailer 5€564 EUR
Retailer 2€612 EUR
Retailer 10€622 EUR
Retailer 14€734 EUR
Retailer 7€780 EUR
Retailer 4€814 EUR
Retailer 22€965 EUR
Retailer 20€1,115 EUR
Retailer 6€1,207 EUR
Retailer 8€1,259 EUR
Retailer 23€1,298 EUR
Retailer 3€1,341 EUR
Retailer 13€1,385 EUR
Retailer 12€1,504 EUR
Retailer 11€2,179 EUR
Retailer 15€2,343 EUR
Brilliant Earth€2,583 EUR

36 data points across 23 retailers

30 retailers€253 EUR to €2,583 EUR

A
Cheapest Retailer
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€253 EUR
Retailer 2
-
€264 EUR
View
Price last confirmed 28 days ago
Retailer 3
-
€280 EUR
View
Price last confirmed 36 days ago
A
Retailer 4
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€302 EUR
View
Final sale: no returns
Retailer 5
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€326 EUR
View
Price last confirmed 39 days ago
Retailer 6
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€328 EUR
View
Price last confirmed 33 days ago
Retailer 7
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€343 EUR
View
Price last confirmed 37 days ago
A
Retailer 8
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€453 EUR
View
A
Retailer 9
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€465 EUR
View
A
Retailer 10
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€488 EUR
View
A
Retailer 11
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€559 EUR
View
A
Retailer 12
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€564 EUR
View
A
Retailer 13
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€612 EUR
View
A
Retailer 14
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€622 EUR
View
A
Retailer 15
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€734 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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€965 EUR
View
B+
Retailer 19
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€1,115 EUR
View
Retailer 20
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€1,161 EUR
View
Price last confirmed 26 days ago
B+
Retailer 21
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€1,207 EUR
View
Retailer 22
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€1,235 EUR
View
Price last confirmed 36 days ago
B+
Retailer 23
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€1,259 EUR
View
B+
Retailer 24
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€1,298 EUR
View
B+
Retailer 25
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€1,341 EUR
View
B+
Retailer 26
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€1,385 EUR
View
Retailer 27
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€1,504 EUR
View
Price last confirmed 31 days ago
Retailer 28
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€2,179 EUR
View
Price last confirmed 8 days ago
B
Retailer 29
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€2,343 EUR
View
Most Expensive
B
Brilliant Earth
16223266Y · Nov 4
€2,583 EUR
$2,910 USD
View
29 more retailers have this diamond
Prices start from €253 EURSave up to €2,330 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
€253 EUR