Radiant|Lab Grown|IGI

1.51ct D IF Radiant Lab Grown Diamond

EX • D/IF • IGI LG743593797

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

Certificate IGI LG743593797

Diamond specifications and retailer prices

From €260 EUR
$290 USD
As of October 30, 2026
Save €2,050 EUR (89%) vs most expensive(unlock to see where)
31 retailers carry this diamond
Most expensive: €2,918 EUR at Brilliant Earth · As of October 10, 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 LG743593797 or 743593797. Listed at 31 retailers as of October 30, 2026, with a 790% 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 angle42.9°
Pavilion angle31.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG743593797
Dimensions5.62 × 5.62 × 3.68 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
5.62 mm5.62 mm1.51 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG743593797
Side View
Table 63.0%Crown 42.9°Girdle: MED-STKPavilion 31.9°Culet: NoneDepth 65.5%

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: €376 EUR|Low: €260 EUR|High: €2,309 EUR|Avg: €907 EUR|-1.3%
Retailer 1
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Retailer 23
November 1, 2026
Retailer 5€260 EUR
Retailer 9€311 EUR
Retailer 16€320 EUR
Retailer 1€376 EUR
Retailer 23€456 EUR
Retailer 13€470 EUR
Retailer 6€501 EUR
Retailer 10€555 EUR
Retailer 17€578 EUR
Retailer 20€611 EUR
Retailer 12€635 EUR
Retailer 8€705 EUR
Retailer 11€803 EUR
Retailer 19€829 EUR
Retailer 22€990 EUR
Retailer 2€1,239 EUR
Retailer 14€1,288 EUR
Retailer 4€1,323 EUR
Retailer 15€1,374 EUR
Retailer 18€1,433 EUR
Retailer 7€1,478 EUR
Retailer 21€2,197 EUR
Retailer 3€2,309 EUR

36 data points across 23 retailers

31 retailers€260 EUR to €2,309 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 24 days ago
Retailer 3
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€277 EUR
$309 USD
View
Price last confirmed 32 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 29 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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€611 EUR
ZAR 11,032 ZAR
View
A
Retailer 15
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€635 EUR
£559 GBP
View
A
Retailer 16
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€705 EUR
$788 USD
View
A
Retailer 17
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€803 EUR
$897 USD
View
A
Retailer 18
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€829 EUR
A$1,425 AUD
View
B+
Retailer 19
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€990 EUR
$1,106 USD
View
Retailer 20
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€1,143 EUR
$1,277 USD
View
Price last confirmed 22 days ago
B+
Retailer 21
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€1,143 EUR
$1,277 USD
View
Retailer 22
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€1,216 EUR
$1,358 USD
View
Price last confirmed 32 days ago
B+
Retailer 23
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€1,239 EUR
$1,384 USD
View
B+
Retailer 24
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€1,288 EUR
$1,440 USD
View
B+
Retailer 25
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€1,323 EUR
$1,478 USD
View
B+
Retailer 26
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€1,374 EUR
SGD 2,075 SGD
View
B+
Retailer 27
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€1,433 EUR
£1,261 GBP
View
Retailer 28
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€1,478 EUR
A$2,541 AUD
View
Price last confirmed 27 days ago
B
Retailer 29
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€2,197 EUR
$2,455 USD
View
B
Retailer 30
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€2,309 EUR
$2,580 USD
View
Most Expensive
Brilliant Earth
17457090Y · Oct 10
€2,918 EUR
$3,260 USD
View
Price last confirmed 22 days ago
30 more retailers have this diamond
Prices start from €260 EURSave up to €2,050 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