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Radiant|Lab Grown|IGI

1.51ct D IF Radiant Lab Grown Diamond

EX • D/IF • IGI LG743509198

Certificate IGI LG743509198

Diamond specifications and retailer prices

From $341 USD
Save $2,274 USD (87%) vs most expensive(unlock to see where)
26 retailers carry this diamond
Most expensive: $2,615 USD at Rare Carat
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 LG743509198 or 743509198. Listed at 26 retailers, with prices from $341 to $2,615 at Rare Carat, a $2,274 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 angle45.8°
Pavilion angle34.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG743509198
Dimensions5.71 × 5.71 × 8.37 mm
L/W Ratio1.00
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
5.71 mm5.71 mm1.51 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG743509198
Side View
Table 63.0%Crown 45.8°Girdle: MED-STKPavilion 34.3°Culet: NoneDepth 66.4%

Caratlytics Score

How it works →
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: $2,615 USD|Low: $271 USD|High: $2,615 USD|Avg: $1,001 USD|+6.2%
Rare Carat
Retailer 2
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Retailer 25
October 1, 2026
Retailer 24$341 USD
Retailer 13$381 USD
Retailer 7$395 USD
Retailer 10$417 USD
Retailer 20$451 USD
Retailer 25$486 USD
Retailer 22$488 USD
Retailer 3$535 USD
Retailer 9$671 USD
Retailer 12$678 USD
Retailer 8$711 USD
Retailer 4$749 USD
Retailer 16$963 USD
Retailer 6$980 USD
Retailer 14$1,023 USD
Retailer 5$1,136 USD
Retailer 23$1,358 USD
Retailer 15$1,395 USD
Retailer 18$1,401 USD
Retailer 11$1,419 USD
Retailer 2$1,596 USD
Retailer 17$1,643 USD
Retailer 21$1,659 USD
Retailer 19$1,713 USD
Rare Carat$2,615 USD

40 data points across 25 retailers

26 retailers$341 USD to $2,615 USD

A
Cheapest Retailer
-
$341 USD
A
Retailer 2
-
$381 USD
View
A
Retailer 3
-
$395 USD
View
A
Retailer 4
-
$417 USD
View
A
Retailer 5
-
$451 USD
£355 GBP
View
A
Retailer 6
-
$486 USD
HK$3,800 HKD
View
A
Retailer 7
-
$488 USD
View
A
Retailer 8
-
$535 USD
View
A
Retailer 9
-
$671 USD
€639 EUR
View
A
Retailer 10
-
$678 USD
View
A
Retailer 11
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$711 USD
ZAR 11,485 ZAR
View
A
Retailer 12
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$735 USD
£578 GBP
View
Price last confirmed 21 days ago
A
Retailer 13
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$750 USD
£591 GBP
View
A
Retailer 14
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$963 USD
View
A
Retailer 15
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$980 USD
A$1,508 AUD
View
A
Retailer 16
-
$1,023 USD
View
B+
Retailer 17
-
$1,136 USD
View
B+
Retailer 18
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$1,358 USD
View
B+
Retailer 19
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$1,401 USD
View
B+
Retailer 20
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$1,419 USD
SGD 1,917 SGD
View
B+
Retailer 21
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$1,423 USD
View
B+
Retailer 22
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$1,596 USD
View
B+
Retailer 23
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$1,643 USD
View
B+
Retailer 24
-
$1,659 USD
A$2,552 AUD
View
B+
Retailer 25
-
$1,713 USD
£1,349 GBP
View
Most Expensive
B
Rare Carat
2227-27 · Sep 28
$2,615 USD
View
25 more retailers have this diamond
Prices start from $341 USDSave up to $2,274 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
$341 USD