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Cushion|Lab Grown|IGI

1.38ct D SI1 Cushion Lab Grown Diamond

ID • D/SI1 • IGI LG623488097

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG623488097

Diamond specifications and retailer prices

From HK$1,812 HKD
$231 USD
As of October 30, 2026
Save HK$7,735 HKD (81%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: HK$9,548 HKD at Reve Diamonds · As of October 30, 2026
View at Reve 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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG623488097 or 623488097. Listed at 12 retailers as of October 30, 2026, with prices from HK$1,812 to HK$9,548, a HK$7,735 spread on the same certified stone. Reve Diamonds lists it at HK$9,548. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.38
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.6°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG623488097
Dimensions6.73 × 6.52 × 4.40 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
6.73 mm6.52 mm1.38 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG623488097
Side View
Table 62.0%Crown 39.6°Girdle: MED-THKPavilion 41.2°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: Oct 30
Current: HK$3,687 HKD|Low: HK$1,279 HKD|High: HK$12,632 HKD|Avg: HK$5,621 HKD|+4.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Reve Diamonds
October 31, 2026
Retailer 6HK$1,812 HKD
Retailer 2HK$3,483 HKD
Retailer 1HK$3,687 HKD
Retailer 5HK$3,855 HKD
Retailer 10HK$3,978 HKD
Retailer 9HK$4,409 HKD
Retailer 11HK$5,468 HKD
Retailer 4HK$6,669 HKD
Retailer 8HK$6,865 HKD
Retailer 3HK$6,901 HKD
Retailer 7HK$8,131 HKD
Reve DiamondsHK$9,548 HKD

44 data points across 12 retailers

12 retailersHK$1,812 HKD to HK$9,548 HKD

A
Cheapest Retailer
-
HK$1,812 HKD
$231 USD
Final sale: no returns
A
Retailer 2
-
HK$3,483 HKD
$444 USD
View
A
Retailer 3
-
HK$3,687 HKD
£370 GBP
View
A
Retailer 4
-
HK$3,855 HKD
€468 EUR
View
A
Retailer 5
-
HK$3,978 HKD
$507 USD
View
B+
Retailer 6
-
HK$4,409 HKD
$562 USD
View
B+
Retailer 7
-
HK$5,468 HKD
$697 USD
View
B+
Retailer 8
-
HK$6,669 HKD
$850 USD
View
Retailer 9
-
HK$6,865 HKD
$875 USD
View
Price last confirmed 10 days ago
B
Retailer 10
-
HK$6,901 HKD
$880 USD
View
B
Retailer 11
-
HK$8,131 HKD
£816 GBP
View
Most Expensive
B
Reve Diamonds
48E84B908 · Oct 30
HK$9,548 HKD
$1,217 USD
View
11 more retailers have this diamond
Prices start from HK$1,812 HKDSave up to HK$7,735 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$1,812 HKD