Radiant|Lab Grown|IGI

1.51ct E IF Radiant Lab Grown Diamond

ID • E/IF • IGI LG654418105

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

Certificate IGI LG654418105

Diamond specifications and retailer prices

From €375 EUR
$419 USD
As of October 30, 2026
Save €1,365 EUR (78%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: €2,090 EUR at Rare Carat · As of October 18, 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 E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG654418105 or 654418105. Listed at 25 retailers as of October 30, 2026, with a 364% 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
E
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.5°
Pavilion angle33.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG654418105
Dimensions8.05 × 5.68 × 3.83 mm
L/W Ratio1.42
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
8.05 mm5.68 mm1.51 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG654418105
Side View
Table 66.0%Crown 40.5°Girdle: MediumPavilion 33.9°Culet: NoneDepth 67.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: €2,090 EUR|Low: €360 EUR|High: €2,121 EUR|Avg: €985 EUR|-1.5%
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
November 1, 2026
Retailer 19€375 EUR
Retailer 6€420 EUR
Retailer 10€420 EUR
Retailer 4€465 EUR
Retailer 7€465 EUR
Retailer 17€595 EUR
Retailer 2€653 EUR
Retailer 9€680 EUR
Retailer 12€766 EUR
Retailer 13€773 EUR
Retailer 16€799 EUR
Retailer 14€1,083 EUR
Retailer 18€1,304 EUR
Retailer 11€1,350 EUR
Retailer 8€1,478 EUR
Retailer 5€1,495 EUR
Retailer 3€1,702 EUR
Retailer 15€1,717 EUR
Rare Carat€2,090 EUR

45 data points across 19 retailers

25 retailers€375 EUR to €1,740 EUR

A
Cheapest Retailer
-
€375 EUR
$419 USD
A
Retailer 2
-
€420 EUR
$469 USD
View
Final sale: no returns
A
Retailer 3
-
€420 EUR
$469 USD
View
A
Retailer 4
-
€465 EUR
$519 USD
View
A
Retailer 5
-
€465 EUR
$519 USD
View
A
Retailer 6
-
€516 EUR
HK$4,500 HKD
View
A
Retailer 7
-
€595 EUR
$665 USD
View
A
Retailer 8
-
€653 EUR
$730 USD
View
A
Retailer 9
-
€680 EUR
$760 USD
View
A
Retailer 10
-
€766 EUR
£674 GBP
View
A
Retailer 11
-
€773 EUR
View
A
Retailer 12
-
€799 EUR
ZAR 14,419 ZAR
View
B+
Retailer 13
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€947 EUR
$1,058 USD
View
B+
Retailer 14
-
€1,083 EUR
A$1,861 AUD
View
B+
Retailer 15
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€1,206 EUR
£1,061 GBP
View
B+
Retailer 16
-
€1,304 EUR
$1,457 USD
View
B+
Retailer 17
-
€1,350 EUR
£1,188 GBP
View
B+
Retailer 18
-
€1,478 EUR
SGD 2,232 SGD
View
B+
Retailer 19
-
€1,495 EUR
$1,670 USD
View
B
Retailer 20
-
€1,525 EUR
$1,703 USD
View
B
Retailer 21
-
€1,693 EUR
$1,892 USD
View
B
Retailer 22
-
€1,702 EUR
$1,902 USD
View
B+
Retailer 23
-
€1,717 EUR
£1,510 GBP
View
B
Retailer 24
-
€1,740 EUR
$1,944 USD
View
Most Expensive
Rare Carat
197B56-7A · Oct 18
€2,090 EUR
$2,335 USD
View
Price last confirmed 13 days ago
24 more retailers have this diamond
Prices start from €375 EURSave up to €1,365 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
€375 EUR