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Radiant|Lab Grown|IGI

1.51ct D IF Radiant Lab Grown Diamond

EX • D/IF • IGI LG726501737

Certificate IGI LG726501737

Diamond specifications and retailer prices

From $333 USD
Save $4,187 USD (93%) vs most expensive(unlock to see where)
27 retailers carry this diamond
Most expensive: $4,520 USD at Brilliant Earth
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 LG726501737 or 726501737. Listed at 27 retailers, with prices from $333 to $4,520 at Brilliant Earth, a $4,187 spread on the same certified stone. 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 angle39.6°
Pavilion angle34°
OriginLab Grown
Grading LabIGI
CertificateIGI LG726501737
Dimensions8.56 × 5.72 × 3.72 mm
L/W Ratio1.50
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
8.56 mm5.72 mm1.51 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG726501737
Side View
Table 62.0%Crown 39.6°Girdle: MediumPavilion 34°Culet: NoneDepth 65.0%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0-100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Sep 30
Current: $4,520 USD|Low: $265 USD|High: $4,520 USD|Avg: $1,345 USD
Brilliant Earth
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Retailer 26
October 1, 2026
Retailer 21$333 USD
Retailer 9$372 USD
Retailer 26$387 USD
Retailer 6$408 USD
Retailer 4$413 USD
Retailer 2$441 USD
Retailer 17$461 USD
Retailer 13$602 USD
Retailer 11$625 USD
Retailer 8$670 USD
Retailer 3$696 USD
Retailer 22$731 USD
Retailer 5$737 USD
Retailer 25$959 USD
Retailer 16$1,021 USD
Retailer 12$1,111 USD
Retailer 7$1,320 USD
Retailer 20$1,329 USD
Retailer 18$1,372 USD
Retailer 10$1,600 USD
Retailer 15$1,619 USD
Retailer 23$1,676 USD
Retailer 14$1,708 USD
Retailer 24$2,620 USD
Retailer 19$2,845 USD
Brilliant Earth$4,520 USD

40 data points across 26 retailers

27 retailers$333 USD to $4,520 USD

A
Cheapest Retailer
-
$333 USD
A
Retailer 2
-
$372 USD
View
A
Retailer 3
-
$387 USD
View
A
Retailer 4
-
$408 USD
View
A
Retailer 5
-
$413 USD
View
A
Retailer 6
-
$441 USD
£347 GBP
View
A
Retailer 7
-
$461 USD
HK$3,600 HKD
View
A
Retailer 8
-
$602 USD
View
A
Retailer 9
-
$625 USD
View
A
Retailer 10
-
$670 USD
View
A
Retailer 11
-
$696 USD
ZAR 11,236 ZAR
View
A
Retailer 12
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$733 USD
£577 GBP
View
A
Retailer 13
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$737 USD
€702 EUR
View
A
Retailer 14
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$959 USD
A$1,476 AUD
View
A
Retailer 15
-
$1,021 USD
View
A
Retailer 16
-
$1,111 USD
View
B+
Retailer 17
-
$1,320 USD
SGD 1,784 SGD
View
B+
Retailer 18
-
$1,329 USD
View
B+
Retailer 19
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$1,372 USD
View
B+
Retailer 20
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$1,534 USD
View
B+
Retailer 21
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$1,600 USD
£1,260 GBP
View
B+
Retailer 22
-
$1,619 USD
View
B+
Retailer 23
-
$1,676 USD
£1,320 GBP
View
B+
Retailer 24
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$1,708 USD
View
B
Retailer 25
-
$2,620 USD
View
B
Retailer 26
-
$2,845 USD
£2,240 GBP
View
Most Expensive
B
Brilliant Earth
15368648A · Sep 29
$4,520 USD
View
26 more retailers have this diamond
Prices start from $333 USDSave up to $4,187 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.

A
1.51ct Radiant
$333 USD