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Radiant|Lab Grown|IGI

1.38ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG754595318

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

Certificate IGI LG754595318

Diamond specifications and retailer prices

From $263 USD
As of October 30, 2026
Save $2,137 USD (89%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: $2,400 USD at Brilliant Earth · As of October 30, 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 IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG754595318 or 754595318. Listed at 25 retailers as of October 30, 2026, with prices from $263 to $2,400, a $2,137 spread on the same certified stone. Brilliant Earth lists it at $2,400. 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
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.9°
Pavilion angle32.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG754595318
Dimensions8.23 × 5.52 × 3.58 mm
L/W Ratio1.49
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
8.23 mm5.52 mm1.38 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG754595318
Side View
Table 63.0%Crown 38.9°Girdle: MED-STKPavilion 32.8°Culet: NoneDepth 64.9%

Caratlytics Score

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

Price History

Last verified: Oct 30
Current: $2,400 USD|Low: $252 USD|High: $2,710 USD|Avg: $958 USD|-11.4%
Brilliant Earth
Retailer 2
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Retailer 24
October 31, 2026
Retailer 4$263 USD
Retailer 23$305 USD
Retailer 12$312 USD
Retailer 3$326 USD
Retailer 7$375 USD
Retailer 22$485 USD
Retailer 15$486 USD
Retailer 11$510 USD
Retailer 16$583 USD
Retailer 2$591 USD
Retailer 21$618 USD
Retailer 13$636 USD
Retailer 14$764 USD
Retailer 20$878 USD
Retailer 6$1,001 USD
Retailer 5$1,157 USD
Retailer 10$1,322 USD
Retailer 18$1,387 USD
Retailer 9$1,392 USD
Retailer 17$1,419 USD
Retailer 19$1,449 USD
Retailer 24$1,750 USD
Retailer 8$2,330 USD
Brilliant Earth$2,400 USD

37 data points across 24 retailers

25 retailers$263 USD to $2,400 USD

A
Cheapest Retailer
-
$263 USD
A
Retailer 2
-
$305 USD
View
A
Retailer 3
-
$312 USD
View
Final sale: no returns
A
Retailer 4
-
$326 USD
View
Retailer 5
-
$375 USD
£295 GBP
View
Price last confirmed 16 days ago
A
Retailer 6
-
$485 USD
View
A
Retailer 7
-
$486 USD
HK$3,800 HKD
View
A
Retailer 8
-
$510 USD
View
A
Retailer 9
-
$583 USD
View
A
Retailer 10
-
$591 USD
€563 EUR
View
A
Retailer 11
-
$618 USD
ZAR 9,986 ZAR
View
A
Retailer 12
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$636 USD
£501 GBP
View
A
Retailer 13
-
$764 USD
View
A
Retailer 14
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$808 USD
View
B+
Retailer 15
-
$878 USD
A$1,350 AUD
View
B+
Retailer 16
-
$1,001 USD
View
B+
Retailer 17
-
$1,157 USD
View
B+
Retailer 18
-
$1,322 USD
View
B+
Retailer 19
-
$1,387 USD
A$2,134 AUD
View
B
Retailer 20
-
$1,392 USD
View
B
Retailer 21
-
$1,419 USD
SGD 1,917 SGD
View
B+
Retailer 22
-
$1,449 USD
£1,141 GBP
View
Retailer 23
-
$1,750 USD
View
Price last confirmed 10 days ago
B
Retailer 24
-
$2,330 USD
View
Most Expensive
B
Brilliant Earth
21476539Y · Oct 30
$2,400 USD
View
24 more retailers have this diamond
Prices start from $263 USDSave up to $2,137 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
$263 USD