Cushion|Lab Grown|IGI

1.38ct D FL Cushion Lab Grown Diamond

VG • D/FL • IGI LG840634364

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG840634364

Diamond specifications and retailer prices

From $516 USD
As of October 30, 2026
Save $2,090 USD (80%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $2,606 USD at Helzberg Diamonds · As of October 30, 2026
View at Helzberg Diamonds

About this 1.38ct lab-grown cushion diamond

This 1.38ct lab-grown cushion 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 very-good cut grade and certified by IGI LG840634364 or 840634364. Listed at 17 retailers as of October 30, 2026, with prices from $516 to $2,606, a $2,090 spread on the same certified stone. Helzberg Diamonds lists it at $2,606. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.38
Carat
D
Color
FL
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.9°
Pavilion angle35.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG840634364
Dimensions8.14 × 5.63 × 3.71 mm
L/W Ratio1.45
Girdle conditionFaceted
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
8.14 mm5.63 mm1.38 ctD / FL
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG840634364
Side View
Table 61.0%Crown 33.9°Girdle: STK-THKPavilion 35.4°Culet: NoneDepth 65.9%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: $2,606 USD|Low: $516 USD|High: $3,010 USD|Avg: $1,393 USD
Helzberg Diamonds
Retailer 2
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Retailer 12
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Retailer 17
October 31, 2026
Retailer 5$516 USD
Retailer 17$551 USD
Retailer 12$569 USD
Retailer 6$784 USD
Retailer 16$835 USD
Retailer 7$866 USD
Retailer 2$912 USD
Retailer 13$926 USD
Retailer 15$947 USD
Retailer 3$1,037 USD
Retailer 10$1,336 USD
Retailer 4$1,805 USD
Retailer 8$1,913 USD
Retailer 14$2,036 USD
Retailer 9$2,050 USD
Retailer 11$2,580 USD
Helzberg Diamonds$2,606 USD

16 data points across 17 retailers

17 retailers$516 USD to $2,606 USD

A
Cheapest Retailer
-
$516 USD
Final sale: no returns
A
Retailer 2
-
$551 USD
View
A
Retailer 3
-
$569 USD
£448 GBP
View
A
Retailer 4
-
$784 USD
View
A
Retailer 5
-
$835 USD
View
A
Retailer 6
-
$866 USD
View
A
Retailer 7
-
$912 USD
£718 GBP
View
A
Retailer 8
-
$926 USD
€882 EUR
View
A
Retailer 9
-
$947 USD
ZAR 15,306 ZAR
View
A
Retailer 10
-
$1,037 USD
View
B+
Retailer 11
-
$1,336 USD
View
B+
Retailer 12
-
$1,805 USD
View
B
Retailer 13
-
$1,913 USD
SGD 2,585 SGD
View
B
Retailer 14
-
$2,036 USD
£1,603 GBP
View
Retailer 15
-
$2,050 USD
View
Price last confirmed 10 days ago
B
Retailer 16
-
$2,580 USD
View
Most Expensive
B
Helzberg Diamonds
ZXZOKGMJKJMK · Oct 30
$2,606 USD
View
16 more retailers have this diamond
Prices start from $516 USDSave up to $2,090 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 Cushion
$516 USD