Radiant|Lab Grown|IGI

1.51ct D IF Radiant Lab Grown Diamond

EX • D/IF • IGI LG754507745

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

Certificate IGI LG754507745

Diamond specifications and retailer prices

From €260 EUR
$290 USD
As of October 30, 2026
Save €2,093 EUR (89%) vs most expensive(unlock to see where)
33 retailers carry this diamond
Most expensive: €2,918 EUR at Brilliant Earth · As of October 6, 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 LG754507745 or 754507745. Listed at 33 retailers as of October 30, 2026, with a 806% 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 angle42.8°
Pavilion angle33.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG754507745
Dimensions5.72 × 5.72 × 3.74 mm
L/W Ratio1.00
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
5.72 mm5.72 mm1.51 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG754507745
Side View
Table 62.0%Crown 42.8°Girdle: MED-STKPavilion 33.2°Culet: NoneDepth 65.4%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: €2,918 EUR|Low: €260 EUR|High: €2,918 EUR|Avg: €1,016 EUR
Brilliant Earth
Retailer 2
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Retailer 17
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Retailer 19
Retailer 20
Retailer 21
Retailer 22
Retailer 23
November 2, 2026
Retailer 6€260 EUR
Retailer 10€311 EUR
Retailer 18€376 EUR
Retailer 23€456 EUR
Retailer 14€470 EUR
Retailer 7€501 EUR
Retailer 11€555 EUR
Retailer 19€578 EUR
Retailer 2€613 EUR
Retailer 13€635 EUR
Retailer 9€705 EUR
Retailer 12€803 EUR
Retailer 20€829 EUR
Retailer 22€990 EUR
Retailer 3€1,239 EUR
Retailer 15€1,288 EUR
Retailer 5€1,323 EUR
Retailer 16€1,374 EUR
Retailer 17€1,426 EUR
Retailer 8€1,478 EUR
Retailer 21€2,197 EUR
Retailer 4€2,309 EUR
Brilliant Earth€2,918 EUR

36 data points across 23 retailers

33 retailers€260 EUR to €2,352 EUR

A
Cheapest Retailer
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€260 EUR
$290 USD
Retailer 2
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€260 EUR
$290 USD
View
Price last confirmed 25 days ago
Retailer 3
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€277 EUR
$309 USD
View
Price last confirmed 33 days ago
A
Retailer 4
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€311 EUR
$347 USD
View
Final sale: no returns
Retailer 5
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€320 EUR
$358 USD
View
Price last confirmed 35 days ago
Retailer 6
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€322 EUR
$360 USD
View
Price last confirmed 30 days ago
Retailer 7
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€338 EUR
$378 USD
View
Price last confirmed 34 days ago
A
Retailer 8
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€376 EUR
£331 GBP
View
A
Retailer 9
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€456 EUR
$510 USD
View
A
Retailer 10
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€470 EUR
HK$4,100 HKD
View
A
Retailer 11
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€501 EUR
$560 USD
View
A
Retailer 12
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€555 EUR
$620 USD
View
A
Retailer 13
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€578 EUR
View
A
Retailer 14
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€613 EUR
ZAR 11,071 ZAR
View
Retailer 15
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€628 EUR
£552 GBP
View
Price last confirmed 17 days ago
A
Retailer 16
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€635 EUR
£559 GBP
View
A
Retailer 17
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€705 EUR
$788 USD
View
A
Retailer 18
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€803 EUR
$897 USD
View
A
Retailer 19
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€829 EUR
A$1,425 AUD
View
B+
Retailer 20
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€990 EUR
$1,106 USD
View
Retailer 21
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€1,143 EUR
$1,277 USD
View
Price last confirmed 22 days ago
B+
Retailer 22
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€1,143 EUR
$1,277 USD
View
Retailer 23
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€1,216 EUR
$1,358 USD
View
Price last confirmed 32 days ago
B+
Retailer 24
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€1,239 EUR
$1,384 USD
View
B+
Retailer 25
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€1,288 EUR
$1,440 USD
View
B+
Retailer 26
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€1,323 EUR
$1,478 USD
View
B+
Retailer 27
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€1,374 EUR
SGD 2,075 SGD
View
B+
Retailer 28
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€1,426 EUR
£1,254 GBP
View
Retailer 29
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€1,478 EUR
A$2,541 AUD
View
Price last confirmed 28 days ago
B
Retailer 30
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€2,197 EUR
$2,455 USD
View
B
Retailer 31
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€2,309 EUR
$2,580 USD
View
B
Retailer 32
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€2,352 EUR
$2,628 USD
View
Most Expensive
Brilliant Earth
18652671Y · Oct 6
€2,918 EUR
$3,260 USD
View
Price last confirmed 26 days ago
32 more retailers have this diamond
Prices start from €260 EURSave up to €2,093 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
€260 EUR