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Cushion|Lab Grown|IGI

4.28ct D FL Cushion Lab Grown Diamond

EX • D/FL • IGI LG754594736

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG754594736

Diamond specifications and retailer prices

From HK$37,793 HKD
$4,817 USD
As of October 30, 2026
Save HK$173,719 HKD (82%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: HK$211,512 HKD at With Clarity · As of October 31, 2026
View at With Clarity

About this 4.28ct lab-grown cushion diamond

This 4.28ct 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 LG754594736 or 754594736. Listed at 14 retailers as of October 30, 2026, with prices from HK$37,793 to HK$211,512, a HK$173,719 spread on the same certified stone. With Clarity lists it at HK$211,512. 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

4.28
Carat
D
Colour
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.4°
Pavilion angle37.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG754594736
Dimensions10.72 × 8.90 × 5.80 mm
L/W Ratio1.20
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
10.72 mm8.90 mm4.28 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG754594736
Side View
Table 61.0%Crown 34.4°Girdle: STK-THKPavilion 37.1°Culet: NoneDepth 65.2%

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$65,327 HKD|Low: HK$37,793 HKD|High: HK$264,753 HKD|Avg: HK$103,823 HKD|-26.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
With Clarity
October 31, 2026
Retailer 7HK$37,793 HKD
Retailer 6HK$49,750 HKD
Retailer 2HK$50,012 HKD
Retailer 11HK$51,912 HKD
Retailer 1HK$65,327 HKD
Retailer 5HK$67,551 HKD
Retailer 8HK$74,903 HKD
Retailer 13HK$85,205 HKD
Retailer 3HK$88,879 HKD
Retailer 9HK$104,034 HKD
Retailer 4HK$115,245 HKD
Retailer 12HK$142,812 HKD
Retailer 10HK$144,838 HKD
With ClarityHK$211,512 HKD

35 data points across 14 retailers

14 retailersHK$37,793 HKD to HK$211,512 HKD

A
Cheapest Retailer
-
HK$37,793 HKD
$4,817 USD
A
Retailer 2
-
HK$49,750 HKD
$6,341 USD
View
A
Retailer 3
-
HK$50,012 HKD
View
A
Retailer 4
-
HK$51,912 HKD
£5,210 GBP
View
A
Retailer 5
-
HK$65,327 HKD
€7,930 EUR
View
B+
Retailer 6
-
HK$67,551 HKD
$8,610 USD
View
B+
Retailer 7
-
HK$74,903 HKD
$9,547 USD
View
B+
Retailer 8
-
HK$85,205 HKD
ZAR 175,446 ZAR
View
B+
Retailer 9
-
HK$88,879 HKD
£8,920 GBP
View
B+
Retailer 10
-
HK$104,034 HKD
$13,260 USD
View
B+
Retailer 11
-
HK$115,245 HKD
$14,689 USD
View
B+
Retailer 12
-
HK$142,812 HKD
$18,203 USD
View
B+
Retailer 13
-
HK$144,838 HKD
SGD 24,947 SGD
View
Most Expensive
B
With Clarity
754594736 · Oct 31
HK$211,512 HKD
$26,959 USD
View
13 more retailers have this diamond
Prices start from HK$37,793 HKDSave up to HK$173,719 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
4.28ct Cushion
HK$37,793 HKD