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Radiant|Lab Grown|IGI

1.51ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG823644554

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

Certificate IGI LG823644554

Diamond specifications and retailer prices

From €244 EUR
$273 USD
As of October 30, 2026
Save €1,953 EUR (89%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: €2,197 EUR at Rare Carat · As of October 28, 2026
View at Rare Carat

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 LG823644554 or 823644554. Listed at 20 retailers as of October 28, 2026, with prices from €244 to €2,197, a €1,953 spread on the same certified stone. Rare Carat lists it at €2,197. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39°
Pavilion angle36.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG823644554
Dimensions8.10 × 5.94 × 3.75 mm
L/W Ratio1.36
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
8.10 mm5.94 mm1.51 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG823644554
Side View
Table 62.0%Crown 39°Girdle: MediumPavilion 36.8°Culet: NoneDepth 63.1%

Caratlytics Score

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A+
Exceptional
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: €2,197 EUR|Low: €244 EUR|High: €2,224 EUR|Avg: €862 EUR|-1.2%
Rare Carat
Retailer 2
Retailer 3
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Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
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Retailer 20
November 1, 2026
Retailer 20€244 EUR
Retailer 10€273 EUR
Retailer 19€284 EUR
Retailer 3€303 EUR
Retailer 13€353 EUR
Retailer 17€443 EUR
Retailer 11€500 EUR
Retailer 16€574 EUR
Retailer 14€594 EUR
Retailer 7€604 EUR
Retailer 8€702 EUR
Retailer 15€779 EUR
Retailer 18€838 EUR
Retailer 4€1,075 EUR
Retailer 6€1,165 EUR
Retailer 9€1,222 EUR
Retailer 2€1,340 EUR
Retailer 12€1,478 EUR
Retailer 5€2,166 EUR
Rare Carat€2,197 EUR

31 data points across 20 retailers

20 retailers€244 EUR to €2,197 EUR

A+
Cheapest Retailer
-
€244 EUR
$273 USD
A
Retailer 2
-
€273 EUR
$305 USD
View
Final sale: no returns
A
Retailer 3
-
€284 EUR
$317 USD
View
A
Retailer 4
-
€303 EUR
$338 USD
View
A
Retailer 5
-
€353 EUR
£311 GBP
View
A
Retailer 6
-
€443 EUR
$495 USD
View
A
Retailer 7
-
€500 EUR
$559 USD
View
A
Retailer 8
-
€574 EUR
ZAR 10,368 ZAR
View
A
Retailer 9
-
€594 EUR
£522 GBP
View
A
Retailer 10
-
€604 EUR
$675 USD
View
A
Retailer 11
-
€702 EUR
$784 USD
View
A
Retailer 12
-
€779 EUR
A$1,339 AUD
View
A
Retailer 13
-
€838 EUR
$936 USD
View
B+
Retailer 14
-
€1,075 EUR
$1,201 USD
View
B+
Retailer 15
-
€1,165 EUR
$1,301 USD
View
B+
Retailer 16
-
€1,222 EUR
$1,365 USD
View
B+
Retailer 17
-
€1,340 EUR
£1,179 GBP
View
Retailer 18
-
€1,478 EUR
A$2,541 AUD
View
Price last confirmed 24 days ago
B
Retailer 19
-
€2,166 EUR
$2,420 USD
View
Most Expensive
B
Rare Carat
LB900 · Oct 28
€2,197 EUR
$2,455 USD
View
19 more retailers have this diamond
Prices start from €244 EURSave up to €1,953 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
€244 EUR