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Cushion|Lab Grown|IGI

1.29ct D VS1 Cushion Lab Grown Diamond

EX • D/VS1 • IGI LG646487136

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG646487136

Diamond specifications and retailer prices

From HK$2,132 HKD
As of November 6, 2026
Save HK$8,292 HKD (80%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: HK$10,816 HKD at Brilliant Earth · As of October 8, 2026
View at Brilliant Earth

About this 1.29ct lab-grown cushion diamond

This 1.29ct lab-grown cushion sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG646487136 or 646487136. Listed at 16 retailers as of November 6, 2026, with a 389% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.29
Carat
D
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle39.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG646487136
Dimensions6.28 × 6.28 × 4.18 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.28 mm6.28 mm1.29 ctD / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG646487136
Side View
Table 63.0%Crown 36.5°Girdle: MED-STKPavilion 39.2°Culet: NoneDepth 66.6%

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 6
Current: HK$10,816 HKD|Low: HK$1,834 HKD|High: HK$10,816 HKD|Avg: HK$5,493 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
Retailer 14
Retailer 15
Retailer 16
November 7, 2026
Retailer 16HK$2,132 HKD
Retailer 9HK$2,359 HKD
Retailer 11HK$3,151 HKD
Retailer 5HK$3,464 HKD
Retailer 3HK$3,966 HKD
Retailer 13HK$3,997 HKD
Retailer 14HK$4,177 HKD
Retailer 12HK$4,428 HKD
Retailer 8HK$4,749 HKD
Retailer 2HK$5,008 HKD
Retailer 7HK$5,494 HKD
Retailer 6HK$5,682 HKD
Retailer 15HK$7,994 HKD
Retailer 10HK$9,413 HKD
Retailer 4HK$10,424 HKD
Brilliant EarthHK$10,816 HKD

37 data points across 16 retailers

16 retailersHK$2,132 HKD to HK$10,424 HKD

A
Cheapest Retailer
-
HK$2,132 HKD
Final sale: no returns
A
Retailer 2
-
HK$2,359 HKD
View
A
Retailer 3
-
HK$3,151 HKD
View
A
Retailer 4
-
HK$3,464 HKD
View
A
Retailer 5
-
HK$3,966 HKD
View
A
Retailer 6
-
HK$3,997 HKD
View
A
Retailer 7
-
HK$4,177 HKD
View
B+
Retailer 8
-
HK$4,428 HKD
View
B+
Retailer 9
-
HK$4,749 HKD
View
B+
Retailer 10
-
HK$5,008 HKD
View
Retailer 11
-
HK$5,494 HKD
View
Price last confirmed 11 days ago
Retailer 12
-
HK$5,682 HKD
View
Price last confirmed 10 days ago
B
Retailer 13
-
HK$7,994 HKD
View
B
Retailer 14
-
HK$9,413 HKD
View
B
Retailer 15
-
HK$10,424 HKD
View
Most Expensive
Brilliant Earth
11432608A · Oct 8
HK$10,816 HKD
$1,380 USD
View
Price last confirmed 30 days ago
15 more retailers have this diamond
Prices start from HK$2,132 HKDSave up to HK$8,292 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
1.29ct Cushion
HK$2,132 HKD