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Radiant|Lab Grown|IGI

1.51ct D IF Radiant Lab Grown Diamond

EX • D/IF • IGI LG726501737

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

Certificate IGI LG726501737

Diamond specifications and retailer prices

From €276 EUR
$308 USD
As of November 1, 2026
Save €2,271 EUR (89%) vs most expensive(unlock to see where)
29 retailers carry this diamond
Most expensive: €3,912 EUR at Brilliant Earth · As of October 24, 2026
View at Brilliant Earth

About this 1.51ct lab-grown radiant diamond

This 1.51ct 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 LG726501737 or 726501737. Listed at 29 retailers as of October 27, 2026, with a 824% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
D
Color
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.6°
Pavilion angle34°
OriginLab Grown
Grading LabIGI
CertificateIGI LG726501737
Dimensions8.56 × 5.72 × 3.72 mm
L/W Ratio1.50
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
8.56 mm5.72 mm1.51 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG726501737
Side View
Table 62.0%Crown 39.6°Girdle: MediumPavilion 34°Culet: NoneDepth 65.0%

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 1
Current: €2,533 EUR|Low: €272 EUR|High: €3,912 EUR|Avg: €944 EUR|-35.2%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
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Retailer 7
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Retailer 11
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Retailer 26
November 1, 2026
Retailer 16€272 EUR
Retailer 11€276 EUR
Retailer 8€306 EUR
Retailer 15€316 EUR
Retailer 17€337 EUR
Retailer 13€357 EUR
Retailer 9€435 EUR
Retailer 22€447 EUR
Retailer 26€448 EUR
Retailer 3€540 EUR
Retailer 25€581 EUR
Retailer 20€600 EUR
Retailer 21€652 EUR
Retailer 7€703 EUR
Retailer 24€788 EUR
Retailer 5€941 EUR
Retailer 10€1,086 EUR
Retailer 19€1,128 EUR
Retailer 6€1,177 EUR
Retailer 14€1,264 EUR
Retailer 12€1,282 EUR
Retailer 18€1,310 EUR
Retailer 2€1,354 EUR
Retailer 4€2,193 EUR
Retailer 23€2,197 EUR
Brilliant Earth€2,533 EUR

22 data points across 26 retailers

29 retailers€276 EUR to €2,546 EUR

Retailer 1
-
€272 EUR
$304 USD
Price last confirmed 11 days ago
A
Retailer 2
-
€276 EUR
$308 USD
View
Final sale: no returns
A
Retailer 3
-
€306 EUR
$342 USD
View
Retailer 4
-
€316 EUR
$353 USD
View
Price last confirmed 12 days ago
Retailer 5
-
€337 EUR
$377 USD
View
Price last confirmed 16 days ago
A
Retailer 6
-
€357 EUR
£314 GBP
View
A
Retailer 7
-
€435 EUR
HK$3,800 HKD
View
A
Retailer 8
-
€447 EUR
$499 USD
View
A
Retailer 9
-
€448 EUR
$500 USD
View
A
Retailer 10
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€540 EUR
$603 USD
View
A
Retailer 11
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€581 EUR
ZAR 10,478 ZAR
View
A
Retailer 12
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€600 EUR
£528 GBP
View
A
Retailer 13
-
€652 EUR
View
A
Retailer 14
-
€703 EUR
$785 USD
View
A
Retailer 15
-
€788 EUR
A$1,354 AUD
View
A
Retailer 16
-
€941 EUR
$1,051 USD
View
B+
Retailer 17
-
€1,086 EUR
$1,213 USD
View
B+
Retailer 18
-
€1,128 EUR
$1,261 USD
View
B+
Retailer 19
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€1,146 EUR
$1,280 USD
View
B+
Retailer 20
-
€1,177 EUR
$1,315 USD
View
B+
Retailer 21
-
€1,264 EUR
SGD 1,909 SGD
View
B+
Retailer 22
-
€1,282 EUR
$1,432 USD
View
Retailer 23
-
€1,310 EUR
£1,152 GBP
View
Price last confirmed 11 days ago
B+
Retailer 24
-
€1,354 EUR
£1,191 GBP
View
B
Retailer 25
-
€2,193 EUR
$2,450 USD
View
B+
Retailer 26
-
€2,197 EUR
$2,455 USD
View
B
Retailer 27
-
€2,533 EUR
$2,830 USD
View
B
Retailer 28
-
€2,546 EUR
£2,240 GBP
View
Most Expensive
Brilliant Earth
15368648A · Oct 24
€3,912 EUR
$4,370 USD
View
Price last confirmed 8 days ago
28 more retailers have this diamond
Prices start from €276 EURSave up to €2,271 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
1.51ct Radiant
€276 EUR