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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 €266 EUR
$297 USD
As of October 30, 2026
Save €2,339 EUR (90%) vs most expensive(unlock to see where)
30 retailers carry this diamond
Most expensive: €2,605 EUR at Brilliant Earth · As of October 31, 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 October 30, 2026, with prices from €266 to €2,605, a €2,339 spread on the same certified stone. Brilliant Earth lists it at €2,605. 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 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: Oct 30
Current: €2,605 EUR|Low: €266 EUR|High: €2,999 EUR|Avg: €1,102 EUR|-13.1%
Brilliant Earth
Retailer 2
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Retailer 11
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Retailer 22
November 2, 2026
Retailer 4€266 EUR
Retailer 22€319 EUR
Retailer 17€470 EUR
Retailer 20€481 EUR
Retailer 5€512 EUR
Retailer 11€564 EUR
Retailer 16€590 EUR
Retailer 2€628 EUR
Retailer 13€652 EUR
Retailer 7€740 EUR
Retailer 12€824 EUR
Retailer 18€849 EUR
Retailer 3€1,014 EUR
Retailer 9€1,268 EUR
Retailer 14€1,315 EUR
Retailer 8€1,343 EUR
Retailer 15€1,400 EUR
Retailer 19€1,462 EUR
Retailer 6€1,517 EUR
Retailer 21€2,197 EUR
Retailer 10€2,363 EUR
Brilliant Earth€2,605 EUR

39 data points across 22 retailers

30 retailers€266 EUR to €2,605 EUR

A
Cheapest Retailer
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€266 EUR
$297 USD
Retailer 2
-
€266 EUR
$297 USD
View
Price last confirmed 25 days ago
Retailer 3
-
€283 EUR
$316 USD
View
Price last confirmed 33 days ago
A
Retailer 4
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€319 EUR
$356 USD
View
Final sale: no returns
Retailer 5
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€328 EUR
$367 USD
View
Price last confirmed 35 days ago
Retailer 6
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€330 EUR
$369 USD
View
Price last confirmed 30 days ago
Retailer 7
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€346 EUR
$387 USD
View
Price last confirmed 34 days ago
A
Retailer 8
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€470 EUR
$525 USD
View
A
Retailer 9
-
€481 EUR
HK$4,200 HKD
View
A
Retailer 10
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€512 EUR
$572 USD
View
A
Retailer 11
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€564 EUR
$630 USD
View
A
Retailer 12
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€590 EUR
View
A
Retailer 13
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€628 EUR
ZAR 11,339 ZAR
View
A
Retailer 14
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€652 EUR
£573 GBP
View
A
Retailer 15
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€740 EUR
$827 USD
View
A
Retailer 16
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€824 EUR
$921 USD
View
A
Retailer 17
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€849 EUR
A$1,460 AUD
View
B+
Retailer 18
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€1,014 EUR
$1,133 USD
View
Retailer 19
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€1,171 EUR
$1,308 USD
View
Price last confirmed 22 days ago
B+
Retailer 20
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€1,171 EUR
$1,308 USD
View
Retailer 21
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€1,245 EUR
$1,391 USD
View
Price last confirmed 32 days ago
B+
Retailer 22
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€1,268 EUR
$1,417 USD
View
B+
Retailer 23
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€1,315 EUR
$1,469 USD
View
B+
Retailer 24
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€1,343 EUR
$1,500 USD
View
B+
Retailer 25
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€1,400 EUR
SGD 2,114 SGD
View
B+
Retailer 26
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€1,462 EUR
£1,286 GBP
View
Retailer 27
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€1,517 EUR
A$2,607 AUD
View
Price last confirmed 28 days ago
B
Retailer 28
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€2,197 EUR
$2,455 USD
View
B
Retailer 29
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€2,363 EUR
$2,640 USD
View
Most Expensive
B
Brilliant Earth
16223266Y · Oct 31
€2,605 EUR
$2,910 USD
View
29 more retailers have this diamond
Prices start from €266 EURSave up to €2,339 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
€266 EUR