Radiant|Lab Grown|IGI

1.50ct D IF Radiant Lab Grown Diamond

EX • D/IF • IGI LG780636147

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

Certificate IGI LG780636147

Diamond specifications and retailer prices

From $307 USD
As of November 1, 2026
Save $2,538 USD (89%) vs most expensive(unlock to see where)
27 retailers carry this diamond
Most expensive: $2,845 USD at Queensmith · As of October 27, 2026
View at Queensmith

About this 1.5ct lab-grown radiant diamond

This 1.5ct 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 LG780636147 or 780636147. Listed at 27 retailers as of October 27, 2026, with prices from $307 to $2,845, a $2,538 spread on the same certified stone. Queensmith lists it at $2,845. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.50
Carat
D
Color
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.1°
Pavilion angle33.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG780636147
Dimensions8.50 × 5.65 × 3.77 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
8.50 mm5.65 mm1.50 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG780636147
Side View
Table 62.0%Crown 38.1°Girdle: Slightly ThickPavilion 33.4°Culet: NoneDepth 66.7%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 1
Current: $666 USD|Low: $303 USD|High: $2,810 USD|Avg: $983 USD|-8.4%
Retailer 1
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Retailer 24
November 1, 2026
Retailer 13$303 USD
Retailer 7$307 USD
Retailer 10$351 USD
Retailer 16$375 USD
Retailer 6$486 USD
Retailer 12$497 USD
Retailer 23$500 USD
Retailer 24$601 USD
Retailer 11$632 USD
Retailer 22$645 USD
Retailer 1$666 USD
Retailer 5$775 USD
Retailer 21$874 USD
Retailer 3$1,044 USD
Retailer 14$1,206 USD
Retailer 17$1,253 USD
Retailer 4$1,307 USD
Retailer 9$1,407 USD
Retailer 8$1,427 USD
Retailer 15$1,463 USD
Retailer 19$1,511 USD
Retailer 2$2,430 USD
Retailer 20$2,455 USD
Retailer 18$2,810 USD

33 data points across 24 retailers

27 retailers$307 USD to $2,845 USD

Retailer 1
-
$303 USD
Price last confirmed 11 days ago
A
Retailer 2
-
$307 USD
View
Final sale: no returns
Retailer 3
-
$351 USD
View
Price last confirmed 12 days ago
Retailer 4
-
$375 USD
View
Price last confirmed 16 days ago
Retailer 5
-
$375 USD
View
Price last confirmed 10 days ago
A
Retailer 6
-
$486 USD
HK$3,800 HKD
View
A
Retailer 7
-
$497 USD
View
A
Retailer 8
-
$500 USD
View
A
Retailer 9
-
$601 USD
View
Retailer 10
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$632 USD
€602 EUR
View
Price last confirmed 9 days ago
A
Retailer 11
-
$645 USD
ZAR 10,415 ZAR
View
A
Retailer 12
-
$666 USD
£525 GBP
View
A
Retailer 13
-
$775 USD
View
A
Retailer 14
-
$874 USD
A$1,345 AUD
View
B+
Retailer 15
-
$1,044 USD
View
Retailer 16
-
$1,206 USD
View
Price last confirmed 10 days ago
B+
Retailer 17
-
$1,253 USD
View
B+
Retailer 18
-
$1,272 USD
View
B+
Retailer 19
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$1,307 USD
View
B+
Retailer 20
-
$1,407 USD
SGD 1,902 SGD
View
B+
Retailer 21
-
$1,427 USD
View
Retailer 22
-
$1,463 USD
£1,152 GBP
View
Price last confirmed 11 days ago
B+
Retailer 23
-
$1,511 USD
£1,190 GBP
View
B
Retailer 24
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$2,430 USD
View
B
Retailer 25
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$2,455 USD
View
B
Retailer 26
-
$2,810 USD
View
Most Expensive
B
Queensmith
LG780636147 · Oct 27
$2,845 USD
£2,240 GBP
View
26 more retailers have this diamond
Prices start from $307 USDSave up to $2,538 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
1.50ct Radiant
$307 USD