Radiant|Lab Grown|IGI

1.51ct E IF Radiant Lab Grown Diamond

ID • E/IF • IGI LG641494187

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

Certificate IGI LG641494187

Diamond specifications and retailer prices

From $284 USD
As of October 30, 2026
Save $2,571 USD (90%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: $2,855 USD at Diamond Quarter · As of October 31, 2026
View at Diamond Quarter

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 LG641494187 or 641494187. Listed at 24 retailers as of October 30, 2026, with prices from $284 to $2,855, a $2,571 spread on the same certified stone. Diamond Quarter lists it at $2,855. 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 angle33.2°
Pavilion angle33.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG641494187
Dimensions8.26 × 5.61 × 3.82 mm
L/W Ratio1.47
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
8.26 mm5.61 mm1.51 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG641494187
Side View
Table 61.0%Crown 33.2°Girdle: MediumPavilion 33.1°Culet: NoneDepth 68.1%

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: $694 USD|Low: $273 USD|High: $2,520 USD|Avg: $956 USD|-14.7%
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October 31, 2026
Retailer 2$284 USD
Retailer 9$318 USD
Retailer 23$330 USD
Retailer 3$353 USD
Retailer 13$353 USD
Retailer 12$402 USD
Retailer 14$499 USD
Retailer 19$510 USD
Retailer 8$579 USD
Retailer 6$613 USD
Retailer 18$669 USD
Retailer 1$694 USD
Retailer 4$792 USD
Retailer 17$907 USD
Retailer 22$1,083 USD
Retailer 7$1,251 USD
Retailer 16$1,414 USD
Retailer 11$1,448 USD
Retailer 10$1,459 USD
Retailer 15$1,509 USD
Retailer 21$1,568 USD
Retailer 20$2,160 USD
Retailer 5$2,520 USD

33 data points across 23 retailers

24 retailers$284 USD to $2,855 USD

A
Cheapest Retailer
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$284 USD
A
Retailer 2
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$318 USD
View
Final sale: no returns
A
Retailer 3
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$330 USD
View
A
Retailer 4
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$353 USD
View
A
Retailer 5
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$353 USD
View
A
Retailer 6
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$402 USD
£316 GBP
View
A
Retailer 7
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$499 USD
HK$3,900 HKD
View
A
Retailer 8
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$510 USD
View
A
Retailer 9
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$579 USD
View
A
Retailer 10
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$613 USD
View
A
Retailer 11
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$669 USD
ZAR 10,803 ZAR
View
A
Retailer 12
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$694 USD
£546 GBP
View
A
Retailer 13
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$792 USD
View
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Retailer 14
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$907 USD
A$1,396 AUD
View
B+
Retailer 15
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$1,083 USD
View
B+
Retailer 16
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$1,251 USD
View
B+
Retailer 17
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$1,414 USD
View
B+
Retailer 18
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$1,448 USD
SGD 1,957 SGD
View
B+
Retailer 19
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$1,459 USD
View
B+
Retailer 20
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$1,509 USD
£1,188 GBP
View
B+
Retailer 21
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$1,568 USD
£1,235 GBP
View
Retailer 22
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$2,160 USD
View
Price last confirmed 12 days ago
B
Retailer 23
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$2,520 USD
View
Most Expensive
B
Diamond Quarter
1.51IFELG87DFCEN · Oct 31
$2,855 USD
£2,248 GBP
View
23 more retailers have this diamond
Prices start from $284 USDSave up to $2,571 USD

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
$284 USD