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Cushion|Lab Grown|IGI

4.29ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG821641156

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG821641156

Diamond specifications and retailer prices

From HK$37,879 HKD
$4,828 USD
As of October 30, 2026
Save HK$121,122 HKD (76%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: HK$159,001 HKD at With Clarity · As of October 31, 2026
View at With Clarity

About this 4.29ct lab-grown cushion diamond

This 4.29ct lab-grown cushion sits in the three to five carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG821641156 or 821641156. Listed at 11 retailers as of October 30, 2026, with prices from HK$37,879 to HK$159,001, a HK$121,122 spread on the same certified stone. With Clarity lists it at HK$159,001. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

4.29
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.3°
Pavilion angle36.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG821641156
Dimensions10.98 × 8.67 × 5.69 mm
L/W Ratio1.27
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
10.98 mm8.67 mm4.29 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG821641156
Side View
Table 61.0%Crown 36.3°Girdle: MED-STKPavilion 36.4°Culet: NoneDepth 65.6%

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: Oct 30
Current: HK$65,484 HKD|Low: HK$37,879 HKD|High: HK$217,546 HKD|Avg: HK$100,020 HKD|-26.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
With Clarity
October 31, 2026
Retailer 4HK$37,879 HKD
Retailer 3HK$49,961 HKD
Retailer 8HK$50,112 HKD
Retailer 6HK$52,033 HKD
Retailer 1HK$65,484 HKD
Retailer 2HK$67,708 HKD
Retailer 9HK$89,079 HKD
Retailer 5HK$104,269 HKD
Retailer 10HK$115,514 HKD
Retailer 7HK$143,146 HKD
With ClarityHK$159,001 HKD

40 data points across 11 retailers

11 retailersHK$37,879 HKD to HK$159,001 HKD

A
Cheapest Retailer
-
HK$37,879 HKD
$4,828 USD
A
Retailer 2
-
HK$49,961 HKD
$6,368 USD
View
A
Retailer 3
-
HK$50,112 HKD
View
A
Retailer 4
-
HK$52,033 HKD
£5,222 GBP
View
A
Retailer 5
-
HK$65,484 HKD
€7,949 EUR
View
A
Retailer 6
-
HK$67,708 HKD
$8,630 USD
View
B+
Retailer 7
-
HK$89,079 HKD
£8,940 GBP
View
B+
Retailer 8
-
HK$104,269 HKD
$13,290 USD
View
B+
Retailer 9
-
HK$115,514 HKD
$14,723 USD
View
B+
Retailer 10
-
HK$143,146 HKD
$18,245 USD
View
Most Expensive
B
With Clarity
821641156 · Oct 31
HK$159,001 HKD
$20,266 USD
View
10 more retailers have this diamond
Prices start from HK$37,879 HKDSave up to HK$121,122 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
4.29ct Cushion
HK$37,879 HKD