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Cushion|Lab Grown|GIA

4.26ct D FL Cushion Lab Grown Diamond

EX • D/FL • GIA 3515897073

Certificate GIA 3515897073

Diamond specifications and retailer prices

From HK$146,699 HKD
$18,698 USD
As of October 31, 2026
Save HK$178,482 HKD (55%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: HK$325,181 HKD at Brilliance · As of October 30, 2026
View at Brilliance

About this 4.26ct lab-grown cushion diamond

This 4.26ct 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 stated by the retailer rather than the lab and certified by GIA 3515897073. Listed at 12 retailers as of October 30, 2026, with prices from HK$146,699 to HK$325,181, a HK$178,482 spread on the same certified stone. Brilliance lists it at HK$325,181. 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

4.26
Carat
D
Colour
FL
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabGIA
CertificateGIA 3515897073
Dimensions9.40 × 9.39 × 6.22 mm
L/W Ratio1.00
Culet sizeNone
Top View
9.40 mm9.39 mm4.26 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 3515897073
Side View
Table 59.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 66.2%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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$325,181 HKD|Low: HK$111,213 HKD|High: HK$588,239 HKD|Avg: HK$290,449 HKD|-15.2%
Brilliance
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 31, 2026
Retailer 8HK$118,392 HKD
Retailer 3HK$146,699 HKD
Retailer 11HK$149,790 HKD
Retailer 10HK$178,709 HKD
Retailer 9HK$197,790 HKD
Retailer 7HK$217,790 HKD
Retailer 6HK$300,814 HKD
BrillianceHK$325,181 HKD
Retailer 2HK$339,883 HKD
Retailer 5HK$424,797 HKD
Retailer 12HK$461,090 HKD
Retailer 4HK$558,827 HKD

32 data points across 12 retailers

12 retailersHK$146,699 HKD to HK$325,181 HKD

Retailer 1
-
HK$118,392 HKD
$15,090 USD
Price last confirmed 12 days ago
B+
Retailer 2
-
HK$146,699 HKD
$18,698 USD
View
B+
Retailer 3
-
HK$149,790 HKD
$19,092 USD
View
B+
Retailer 4
-
HK$178,709 HKD
$22,778 USD
View
B+
Retailer 5
-
HK$197,790 HKD
$25,210 USD
View
Retailer 6
-
HK$217,790 HKD
£21,858 GBP
View
Price last confirmed 8 days ago
B
Retailer 7
-
HK$300,814 HKD
£30,190 GBP
View
Most Expensive
B
Brilliance
D42114110 · Oct 30
HK$325,181 HKD
$41,447 USD
View
7 more retailers have this diamond
Prices start from HK$146,699 HKDSave up to HK$178,482 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.

B+
4.26ct Cushion
HK$146,699 HKD