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Cushion|Lab Grown|IGI

1.40ct D IF Cushion Lab Grown Diamond

VG • D/IF • IGI LG843612983

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG843612983

Diamond specifications and retailer prices

From HK$4,111 HKD
As of November 4, 2026
Save HK$14,719 HKD (78%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: HK$18,830 HKD at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

About this 1.4ct lab-grown cushion diamond

This 1.4ct 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), with a very-good cut grade and certified by IGI LG843612983 or 843612983. Listed at 14 retailers as of November 4, 2026, with prices from HK$4,111 to HK$18,830, a HK$14,719 spread on the same certified stone. Brilliant Earth lists it at HK$18,830. 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

1.40
Carat
D
Colour
IF
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.8°
Pavilion angle36.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG843612983
Dimensions7.45 × 6.04 × 4.02 mm
L/W Ratio1.23
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
7.45 mm6.04 mm1.40 ctD / IF
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG843612983
Side View
Table 59.0%Crown 36.8°Girdle: MED-THKPavilion 36.7°Culet: NoneDepth 66.6%

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 4
Current: HK$18,830 HKD|Low: HK$4,111 HKD|High: HK$18,830 HKD|Avg: HK$9,343 HKD
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
November 5, 2026
Retailer 3HK$4,111 HKD
Retailer 4HK$5,061 HKD
Retailer 9HK$5,782 HKD
Retailer 6HK$6,167 HKD
Retailer 2HK$6,402 HKD
Retailer 11HK$8,128 HKD
Retailer 12HK$8,215 HKD
Retailer 5HK$11,816 HKD
Retailer 13HK$13,777 HKD
Retailer 8HK$13,989 HKD
Retailer 10HK$16,429 HKD
Retailer 7HK$16,515 HKD
Brilliant EarthHK$18,830 HKD

15 data points across 13 retailers

14 retailersHK$4,111 HKD to HK$18,830 HKD

A
Cheapest Retailer
-
HK$4,111 HKD
A
Retailer 2
-
HK$5,061 HKD
View
A
Retailer 3
-
HK$5,782 HKD
View
A
Retailer 4
-
HK$6,167 HKD
View
A
Retailer 5
-
HK$6,402 HKD
View
B+
Retailer 6
-
HK$8,128 HKD
View
B+
Retailer 7
-
HK$8,215 HKD
View
B+
Retailer 8
-
HK$9,964 HKD
View
B+
Retailer 9
-
HK$11,816 HKD
View
B
Retailer 10
-
HK$13,777 HKD
View
B
Retailer 11
-
HK$13,989 HKD
View
B
Retailer 12
-
HK$16,429 HKD
View
B
Retailer 13
-
HK$16,515 HKD
View
Most Expensive
B
Brilliant Earth
22234405A · Nov 4
HK$18,830 HKD
$2,400 USD
View
13 more retailers have this diamond
Prices start from HK$4,111 HKDSave up to HK$14,719 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
1.40ct Cushion
HK$4,111 HKD