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Cushion|Lab Grown|GIA

4.30ct D FL Cushion Lab Grown Diamond

EX • D/FL • GIA 2528080655

Certificate GIA 2528080655

Diamond specifications and retailer prices

From £14,172 GBP
$18,872 USD
As of October 28, 2026
Save £17,241 GBP (55%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £31,413 GBP at Brilliance · As of October 27, 2026
View at Brilliance

About this 4.3ct lab-grown cushion diamond

This 4.3ct 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 2528080655. Listed at 12 retailers as of October 27, 2026, with prices from £14,172 to £31,413, a £17,241 spread on the same certified stone. Brilliance lists it at £31,413. 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

4.30
Carat
D
Colour
FL
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabGIA
CertificateGIA 2528080655
Dimensions9.48 × 9.47 × 6.18 mm
L/W Ratio1.00
Culet sizeNone
Top View
9.48 mm9.47 mm4.30 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2528080655
Side View
Table 59.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 65.3%

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 28
Current: £31,413 GBP|Low: £10,900 GBP|High: £56,830 GBP|Avg: £27,170 GBP|-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
Retailer 13
October 29, 2026
Retailer 9£11,253 GBP
Retailer 3£14,172 GBP
Retailer 12£14,468 GBP
Retailer 5£17,032 GBP
Retailer 11£17,263 GBP
Retailer 10£19,104 GBP
Retailer 8£21,040 GBP
Retailer 6£29,060 GBP
Brilliance£31,413 GBP
Retailer 2£33,069 GBP
Retailer 7£40,875 GBP
Retailer 13£44,446 GBP
Retailer 4£53,989 GBP

31 data points across 13 retailers

12 retailers£14,172 GBP to £31,413 GBP

B+
Retailer 1
-
£11,253 GBP
$14,985 USD
Price last confirmed 10 days ago
B+
Retailer 2
-
£14,172 GBP
$18,872 USD
View
B+
Retailer 3
-
£14,468 GBP
$19,267 USD
View
B+
Retailer 4
-
£17,263 GBP
$22,989 USD
View
B+
Retailer 5
-
£19,104 GBP
$25,440 USD
View
B
Retailer 6
-
£21,040 GBP
View
B
Retailer 7
-
£29,060 GBP
View
Most Expensive
B
Brilliance
D42109193 · Oct 27
£31,413 GBP
$41,832 USD
View
7 more retailers have this diamond
Prices start from £14,172 GBPSave up to £17,241 GBP

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+
4.30ct Cushion
£14,172 GBP