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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 HK$3,162 HKD
As of November 4, 2026
Save HK$15,511 HKD (83%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: HK$18,673 HKD 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 HK$3,162 to HK$18,673, a HK$15,511 spread on the same certified stone. Brilliant Earth lists it at HK$18,673. 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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: HK$18,673 HKD|Low: HK$3,099 HKD|High: HK$20,321 HKD|Avg: HK$8,383 HKD|-8.1%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
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Retailer 7
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Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
November 5, 2026
Retailer 13HK$3,162 HKD
Retailer 12HK$3,609 HKD
Retailer 18HK$4,707 HKD
Retailer 17HK$5,516 HKD
Retailer 6HK$5,625 HKD
Retailer 5HK$6,057 HKD
Retailer 16HK$6,057 HKD
Retailer 2HK$6,277 HKD
Retailer 4HK$7,909 HKD
Retailer 11HK$8,575 HKD
Retailer 15HK$9,078 HKD
Retailer 8HK$11,612 HKD
Retailer 7HK$13,401 HKD
Retailer 9HK$13,628 HKD
Retailer 14HK$13,730 HKD
Retailer 10HK$13,848 HKD
Retailer 3HK$15,645 HKD
Brilliant EarthHK$18,673 HKD

26 data points across 18 retailers

19 retailersHK$3,162 HKD to HK$18,673 HKD

A
Cheapest Retailer
-
HK$3,162 HKD
Final sale: no returns
Retailer 2
-
HK$3,436 HKD
View
Price last confirmed 11 days ago
A
Retailer 3
-
HK$3,609 HKD
View
A
Retailer 4
-
HK$4,707 HKD
View
A
Retailer 5
-
HK$5,516 HKD
View
A
Retailer 6
-
HK$5,625 HKD
View
A
Retailer 7
-
HK$6,057 HKD
View
A
Retailer 8
-
HK$6,057 HKD
View
A
Retailer 9
-
HK$6,277 HKD
View
B+
Retailer 10
-
HK$7,909 HKD
View
B+
Retailer 11
-
HK$8,575 HKD
View
B+
Retailer 12
-
HK$9,078 HKD
View
B
Retailer 13
-
HK$11,612 HKD
View
B
Retailer 14
-
HK$13,401 HKD
View
B
Retailer 15
-
HK$13,628 HKD
View
B
Retailer 16
-
HK$13,730 HKD
View
B
Retailer 17
-
HK$13,848 HKD
View
B
Retailer 18
-
HK$15,645 HKD
View
Most Expensive
B
Brilliant Earth
18445978A · Nov 4
HK$18,673 HKD
$2,380 USD
View
18 more retailers have this diamond
Prices start from HK$3,162 HKDSave up to HK$15,511 HKD

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
HK$3,162 HKD