CaratHunter
Plans
Cushion|Lab Grown|IGI

1.38ct D IF Cushion Lab Grown Diamond

D/IF • IGI LG783670536

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG783670536

Diamond specifications and retailer prices

From $403 USD
As of November 4, 2026
Save $1,977 USD (83%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $2,380 USD at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

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 IF clarity (flawless or internally-flawless) and certified by IGI LG783670536 or 783670536. Listed at 19 retailers as of November 4, 2026, with prices from $403 to $2,380, a $1,977 spread on the same certified stone. Brilliant Earth lists it at $2,380. 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
IF
Clarity
-
Cut

Specifications

Cut
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG783670536
Dimensions6.55 × 6.37 × 4.30 mm
L/W Ratio1.03
Girdle conditionFaceted
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
6.55 mm6.37 mm1.38 ctD / IF
OriginLab Grown
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG783670536
Side View
Table 63.0%Crown 35°Girdle: MED-THKPavilion 40.3°Culet: NoneDepth 67.5%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $2,380 USD|Low: $395 USD|High: $2,590 USD|Avg: $1,069 USD|-8.1%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
November 5, 2026
Retailer 13$403 USD
Retailer 12$460 USD
Retailer 18$600 USD
Retailer 17$703 USD
Retailer 6$717 USD
Retailer 5$772 USD
Retailer 16$772 USD
Retailer 2$800 USD
Retailer 4$1,008 USD
Retailer 11$1,093 USD
Retailer 15$1,157 USD
Retailer 8$1,480 USD
Retailer 7$1,708 USD
Retailer 9$1,737 USD
Retailer 14$1,750 USD
Retailer 10$1,765 USD
Retailer 3$1,994 USD
Brilliant Earth$2,380 USD

26 data points across 18 retailers

19 retailers$403 USD to $2,380 USD

A
Cheapest Retailer
-
$403 USD
Final sale: no returns
Retailer 2
-
$438 USD
View
Price last confirmed 11 days ago
A
Retailer 3
-
$460 USD
View
A
Retailer 4
-
$600 USD
View
A
Retailer 5
-
$703 USD
View
A
Retailer 6
-
$717 USD
View
A
Retailer 7
-
$772 USD
View
A
Retailer 8
-
$772 USD
View
A
Retailer 9
-
$800 USD
View
B+
Retailer 10
-
$1,008 USD
View
B+
Retailer 11
-
$1,093 USD
View
B+
Retailer 12
-
$1,157 USD
View
B
Retailer 13
-
$1,480 USD
View
B
Retailer 14
-
$1,708 USD
View
B
Retailer 15
-
$1,737 USD
View
B
Retailer 16
-
$1,750 USD
View
B
Retailer 17
-
$1,765 USD
View
B
Retailer 18
-
$1,994 USD
View
Most Expensive
B
Brilliant Earth
18445978A · Nov 4
$2,380 USD
View
18 more retailers have this diamond
Prices start from $403 USDSave up to $1,977 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
$403 USD