Radiant|Lab Grown|IGI

1.51ct E IF Radiant Lab Grown Diamond

EX • E/IF • IGI LG605337352

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

Certificate IGI LG605337352

Diamond specifications and retailer prices

From $290 USD
As of October 30, 2026
Save $2,380 USD (89%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: $2,670 USD at Brilliant Earth · As of October 30, 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 E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG605337352 or 605337352. Listed at 25 retailers as of October 30, 2026, with prices from $290 to $2,670, a $2,380 spread on the same certified stone. Brilliant Earth lists it at $2,670. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle46.9°
Pavilion angle36.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG605337352
Dimensions8.05 × 5.77 × 3.84 mm
L/W Ratio1.40
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 mm5.77 mm1.51 ctE / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG605337352
Side View
Table 67.0%Crown 46.9°Girdle: MediumPavilion 36.3°Culet: NoneDepth 66.6%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: $2,670 USD|Low: $276 USD|High: $3,040 USD|Avg: $995 USD|-9.8%
Brilliant Earth
Retailer 2
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Retailer 22
October 31, 2026
Retailer 6$290 USD
Retailer 18$325 USD
Retailer 3$336 USD
Retailer 9$360 USD
Retailer 14$360 USD
Retailer 22$515 USD
Retailer 11$591 USD
Retailer 21$618 USD
Retailer 8$620 USD
Retailer 16$636 USD
Retailer 2$666 USD
Retailer 20$837 USD
Retailer 10$966 USD
Retailer 5$1,012 USD
Retailer 7$1,156 USD
Retailer 15$1,205 USD
Retailer 13$1,383 USD
Retailer 17$1,430 USD
Retailer 19$1,449 USD
Retailer 12$1,481 USD
Retailer 4$2,280 USD
Brilliant Earth$2,670 USD

35 data points across 22 retailers

25 retailers$290 USD to $2,670 USD

A
Cheapest Retailer
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$290 USD
A
Retailer 2
-
$325 USD
View
Final sale: no returns
A
Retailer 3
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$336 USD
View
A
Retailer 4
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$360 USD
View
A
Retailer 5
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$360 USD
View
A
Retailer 6
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$515 USD
View
A
Retailer 7
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$591 USD
View
A
Retailer 8
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$618 USD
ZAR 9,982 ZAR
View
A
Retailer 9
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$620 USD
View
A
Retailer 10
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$636 USD
£501 GBP
View
Retailer 11
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$666 USD
€634 EUR
View
A
Retailer 12
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$837 USD
A$1,287 AUD
View
A
Retailer 13
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$966 USD
View
B+
Retailer 14
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$1,012 USD
View
B+
Retailer 15
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$1,156 USD
View
B+
Retailer 16
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$1,184 USD
View
B+
Retailer 17
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$1,205 USD
View
B+
Retailer 18
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$1,322 USD
View
B+
Retailer 19
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$1,383 USD
View
B+
Retailer 20
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$1,426 USD
£1,123 GBP
View
B+
Retailer 21
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$1,430 USD
A$2,200 AUD
View
B+
Retailer 22
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$1,449 USD
£1,141 GBP
View
B+
Retailer 23
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$1,481 USD
View
Retailer 24
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$2,280 USD
View
Price last confirmed 12 days ago
Most Expensive
B
Brilliant Earth
14717190A · Oct 30
$2,670 USD
View
24 more retailers have this diamond
Prices start from $290 USDSave up to $2,380 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
$290 USD