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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 €413 EUR
£363 GBP
As of November 1, 2026
Save €1,717 EUR (81%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: €2,130 EUR at Brilliant Earth · As of October 31, 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 October 31, 2026, with prices from €413 to €2,130, a €1,717 spread on the same certified stone. Brilliant Earth lists it at €2,130. 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
Colour
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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: €2,130 EUR|Low: €354 EUR|High: €2,372 EUR|Avg: €981 EUR|-10.2%
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
Retailer 19
November 1, 2026
Retailer 11€392 EUR
Retailer 12€413 EUR
Retailer 2€450 EUR
Retailer 15€537 EUR
Retailer 14€630 EUR
Retailer 3€642 EUR
Retailer 8€673 EUR
Retailer 19€691 EUR
Retailer 13€717 EUR
Retailer 18€902 EUR
Retailer 7€951 EUR
Retailer 16€1,023 EUR
Retailer 5€1,325 EUR
Retailer 4€1,529 EUR
Retailer 10€1,539 EUR
Retailer 6€1,555 EUR
Retailer 9€1,580 EUR
Retailer 17€1,786 EUR
Brilliant Earth€2,130 EUR

23 data points across 19 retailers

19 retailers€413 EUR to €2,130 EUR

Retailer 1
-
€392 EUR
$438 USD
Price last confirmed 7 days ago
A
Retailer 2
-
€413 EUR
£363 GBP
View
B+
Retailer 3
-
€450 EUR
$503 USD
View
Final sale: no returns
A
Retailer 4
-
€537 EUR
$600 USD
View
A
Retailer 5
-
€630 EUR
View
A
Retailer 6
-
€642 EUR
$717 USD
View
A
Retailer 7
-
€673 EUR
ZAR 12,149 ZAR
View
A
Retailer 8
-
€691 EUR
$772 USD
View
A
Retailer 9
-
€717 EUR
£630 GBP
View
B+
Retailer 10
-
€902 EUR
$1,008 USD
View
B+
Retailer 11
-
€951 EUR
A$1,635 AUD
View
B+
Retailer 12
-
€1,023 EUR
$1,143 USD
View
B+
Retailer 13
-
€1,325 EUR
$1,480 USD
View
B
Retailer 14
-
€1,529 EUR
$1,708 USD
View
Retailer 15
-
€1,539 EUR
£1,354 GBP
View
Price last confirmed 13 days ago
B
Retailer 16
-
€1,555 EUR
£1,368 GBP
View
Retailer 17
-
€1,580 EUR
$1,765 USD
View
Price last confirmed 13 days ago
B
Retailer 18
-
€1,786 EUR
A$3,069 AUD
View
Most Expensive
B
Brilliant Earth
18445978A · Oct 31
€2,130 EUR
$2,380 USD
View
18 more retailers have this diamond
Prices start from €413 EURSave up to €1,717 EUR

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
€413 EUR