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Cushion|Lab Grown|IGI

4.23ct D FL Cushion Lab Grown Diamond

EX • D/FL • IGI LG826639385

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG826639385

Diamond specifications and retailer prices

From HK$44,948 HKD
$5,729 USD
As of October 31, 2026
Save HK$227,635 HKD (84%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: HK$272,583 HKD at With Clarity · As of October 31, 2026
View at With Clarity

About this 4.23ct lab-grown cushion diamond

This 4.23ct 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 LG826639385 or 826639385. Listed at 20 retailers as of October 31, 2026, with prices from HK$44,948 to HK$272,583, a HK$227,635 spread on the same certified stone. With Clarity lists it at HK$272,583. 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

4.23
Carat
D
Colour
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle38.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG826639385
Dimensions10.83 × 8.60 × 5.67 mm
L/W Ratio1.26
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
10.83 mm8.60 mm4.23 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG826639385
Side View
Table 62.0%Crown 35°Girdle: STK-THKPavilion 38.7°Culet: NoneDepth 65.9%

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 31
Current: HK$67,200 HKD|Low: HK$43,395 HKD|High: HK$174,331 HKD|Avg: HK$89,805 HKD|+0.0%
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
November 1, 2026
Retailer 10HK$44,948 HKD
Retailer 5HK$52,990 HKD
Retailer 2HK$53,665 HKD
Retailer 7HK$61,495 HKD
Retailer 1HK$67,200 HKD
Retailer 3HK$76,404 HKD
Retailer 6HK$84,192 HKD
Retailer 12HK$90,838 HKD
Retailer 9HK$109,784 HKD
Retailer 8HK$114,223 HKD
Retailer 11HK$120,024 HKD
Retailer 4HK$138,431 HKD
Retailer 13HK$174,331 HKD

43 data points across 13 retailers

20 retailersHK$44,948 HKD to HK$272,583 HKD

A
Cheapest Retailer
-
HK$44,948 HKD
$5,729 USD
A
Retailer 2
-
HK$49,958 HKD
CA$8,844 CAD
View
A
Retailer 3
-
HK$52,990 HKD
$6,754 USD
View
A
Retailer 4
-
HK$53,625 HKD
$6,835 USD
View
Retailer 5
-
HK$53,665 HKD
$6,840 USD
View
Price last confirmed 16 days ago
A
Retailer 6
-
HK$61,495 HKD
$7,838 USD
View
Final sale: no returns
A
Retailer 7
-
HK$67,200 HKD
£6,744 GBP
View
B+
Retailer 8
-
HK$76,404 HKD
£7,668 GBP
View
B+
Retailer 9
-
HK$84,192 HKD
€10,220 EUR
View
B+
Retailer 10
-
HK$90,838 HKD
$11,578 USD
View
B+
Retailer 11
-
HK$109,784 HKD
£11,018 GBP
View
B+
Retailer 12
-
HK$114,223 HKD
ZAR 235,196 ZAR
View
B
Retailer 13
-
HK$120,024 HKD
$15,298 USD
View
B
Retailer 14
-
HK$138,431 HKD
$17,644 USD
View
B
Retailer 15
-
HK$144,698 HKD
$18,443 USD
View
B
Retailer 16
-
HK$149,300 HKD
$19,029 USD
View
B
Retailer 17
-
HK$157,848 HKD
$20,119 USD
View
B
Retailer 18
-
HK$174,331 HKD
$22,220 USD
View
B
Retailer 19
-
HK$187,790 HKD
$23,935 USD
View
Most Expensive
B
With Clarity
826639385 · Oct 31
HK$272,583 HKD
$34,743 USD
View
19 more retailers have this diamond
Prices start from HK$44,948 HKDSave up to HK$227,635 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
4.23ct Cushion
HK$44,948 HKD