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Cushion|Lab Grown|IGI

1.31ct D IF Cushion Lab Grown Diamond

EX • D/IF • IGI LG776609771

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG776609771

Diamond specifications and retailer prices

From HK$4,527 HKD
As of November 4, 2026
Save HK$17,049 HKD (79%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: HK$21,576 HKD at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

About this 1.31ct lab-grown cushion diamond

This 1.31ct 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 top-tier cut grade and certified by IGI LG776609771 or 776609771. Listed at 18 retailers as of November 4, 2026, with prices from HK$4,527 to HK$21,576, a HK$17,049 spread on the same certified stone. Brilliant Earth lists it at HK$21,576. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.31
Carat
D
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.1°
Pavilion angle41.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG776609771
Dimensions7.51 × 5.71 × 3.94 mm
L/W Ratio1.32
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
7.51 mm5.71 mm1.31 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG776609771
Side View
Table 60.0%Crown 35.1°Girdle: MED-STKPavilion 41.3°Culet: NoneDepth 69.0%

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$21,576 HKD|Low: HK$4,527 HKD|High: HK$23,537 HKD|Avg: HK$11,785 HKD|-5.5%
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 18HK$4,527 HKD
Retailer 10HK$5,280 HKD
Retailer 17HK$5,523 HKD
Retailer 12HK$6,080 HKD
Retailer 4HK$6,685 HKD
Retailer 15HK$7,634 HKD
Retailer 5HK$7,650 HKD
Retailer 11HK$7,689 HKD
Retailer 7HK$7,775 HKD
Retailer 13HK$8,646 HKD
Retailer 16HK$12,216 HKD
Retailer 14HK$14,436 HKD
Retailer 3HK$14,585 HKD
Retailer 9HK$15,872 HKD
Retailer 6HK$16,304 HKD
Retailer 8HK$17,253 HKD
Retailer 2HK$20,870 HKD
Brilliant EarthHK$21,576 HKD

41 data points across 18 retailers

18 retailersHK$4,527 HKD to HK$21,576 HKD

A
Cheapest Retailer
-
HK$4,527 HKD
Final sale: no returns
Retailer 2
-
HK$5,280 HKD
View
Price last confirmed 20 days ago
A
Retailer 3
-
HK$5,523 HKD
View
A
Retailer 4
-
HK$6,080 HKD
View
A
Retailer 5
-
HK$6,685 HKD
View
A
Retailer 6
-
HK$7,634 HKD
View
A
Retailer 7
-
HK$7,650 HKD
View
A
Retailer 8
-
HK$7,689 HKD
View
A
Retailer 9
-
HK$7,775 HKD
View
A
Retailer 10
-
HK$8,646 HKD
View
B+
Retailer 11
-
HK$12,216 HKD
View
B+
Retailer 12
-
HK$14,436 HKD
View
B
Retailer 13
-
HK$14,585 HKD
View
B
Retailer 14
-
HK$15,872 HKD
View
B
Retailer 15
-
HK$16,304 HKD
View
B
Retailer 16
-
HK$17,253 HKD
View
B
Retailer 17
-
HK$20,870 HKD
View
Most Expensive
B
Brilliant Earth
19077250A · Nov 4
HK$21,576 HKD
$2,750 USD
View
17 more retailers have this diamond
Prices start from HK$4,527 HKDSave up to HK$17,049 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
1.31ct Cushion
HK$4,527 HKD