Radiant|Lab Grown|IGI

1.38ct D FL Radiant Lab Grown Diamond

EX • D/FL • IGI LG766669517

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

Certificate IGI LG766669517

Diamond specifications and retailer prices

From $338 USD
As of October 30, 2026
Save $3,742 USD (92%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $4,080 USD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.38ct lab-grown radiant diamond

This 1.38ct lab-grown radiant sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG766669517 or 766669517. Listed at 23 retailers as of October 29, 2026, with prices from $338 to $4,080, a $3,742 spread on the same certified stone. Brilliant Earth lists it at $4,080. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.38
Carat
D
Color
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.6°
Pavilion angle34.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG766669517
Dimensions8.25 × 5.67 × 3.59 mm
L/W Ratio1.46
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
8.25 mm5.67 mm1.38 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG766669517
Side View
Table 62.0%Crown 41.6°Girdle: MediumPavilion 34.1°Culet: NoneDepth 63.3%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: $4,080 USD|Low: $338 USD|High: $4,080 USD|Avg: $1,318 USD
Brilliant Earth
Retailer 2
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Retailer 23
October 30, 2026
Retailer 3$338 USD
Retailer 11$378 USD
Retailer 21$392 USD
Retailer 6$419 USD
Retailer 12$419 USD
Retailer 13$477 USD
Retailer 19$570 USD
Retailer 15$576 USD
Retailer 5$670 USD
Retailer 2$675 USD
Retailer 23$779 USD
Retailer 18$794 USD
Retailer 17$833 USD
Retailer 7$1,228 USD
Retailer 4$1,486 USD
Retailer 9$1,627 USD
Retailer 16$1,642 USD
Retailer 14$1,675 USD
Retailer 10$1,798 USD
Retailer 20$1,808 USD
Retailer 8$3,000 USD
Retailer 22$3,090 USD
Brilliant Earth$4,080 USD

38 data points across 23 retailers

23 retailers$338 USD to $4,080 USD

A
Cheapest Retailer
-
$338 USD
A
Retailer 2
-
$378 USD
View
Final sale: no returns
A
Retailer 3
-
$392 USD
View
A
Retailer 4
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$419 USD
View
A
Retailer 5
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$419 USD
View
A
Retailer 6
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$477 USD
£376 GBP
View
A
Retailer 7
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$570 USD
View
A
Retailer 8
-
$576 USD
HK$4,500 HKD
View
A
Retailer 9
-
$670 USD
View
A
Retailer 10
-
$675 USD
View
A
Retailer 11
-
$779 USD
View
A
Retailer 12
-
$794 USD
ZAR 12,835 ZAR
View
A
Retailer 13
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$833 USD
£656 GBP
View
B+
Retailer 14
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$1,228 USD
View
B+
Retailer 15
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$1,486 USD
View
B
Retailer 16
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$1,627 USD
View
B
Retailer 17
-
$1,642 USD
View
B+
Retailer 18
-
$1,675 USD
SGD 2,263 SGD
View
B
Retailer 19
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$1,798 USD
£1,416 GBP
View
B+
Retailer 20
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$1,808 USD
£1,424 GBP
View
B
Retailer 21
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$3,000 USD
View
Retailer 22
-
$3,090 USD
View
Price last confirmed 9 days ago
Most Expensive
B
Brilliant Earth
20152751Y · Oct 29
$4,080 USD
View
22 more retailers have this diamond
Prices start from $338 USDSave up to $3,742 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
1.38ct Radiant
$338 USD