CaratHunter
Plans
Cushion|Natural|GIA

1.50ct D SI2 Cushion Natural Diamond

GD • D/SI2 • GIA 2557428908

Certificate GIA 2557428908

Diamond specifications and retailer prices

From £3,468 GBP
HK$36,300 HKD
As of October 30, 2026
Save £3,887 GBP (53%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £7,355 GBP at Queensmith · As of October 28, 2026
View at Queensmith

About this 1.5ct natural cushion diamond

This 1.5ct natural cushion sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 2557428908. Listed at 14 retailers as of October 28, 2026, with prices from £3,468 to £7,355, a £3,887 spread on the same certified stone. Queensmith lists it at £7,355. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.50
Carat
D
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2557428908
Dimensions7.90 × 6.07 × 3.73 mm
L/W Ratio1.30
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Cloud, Crystal, Cavity, Indented Natural, Needle, Natural
Top View
7.90 mm6.07 mm1.50 ctD / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2557428908
Side View
Table 69.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 61.4%

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: £7,355 GBP|Low: £3,468 GBP|High: £7,407 GBP|Avg: £4,999 GBP|+1.5%
Queensmith
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 9£3,468 GBP
Retailer 6£3,741 GBP
Retailer 8£3,992 GBP
Retailer 3£4,121 GBP
Retailer 10£4,307 GBP
Retailer 5£4,477 GBP
Retailer 11£4,605 GBP
Retailer 4£4,694 GBP
Retailer 12£4,784 GBP
Retailer 2£5,100 GBP
Retailer 7£6,913 GBP
Queensmith£7,355 GBP

32 data points across 12 retailers

14 retailers£3,468 GBP to £7,355 GBP

A
Cheapest Retailer
-
£3,468 GBP
HK$36,300 HKD
A
Retailer 2
-
£3,741 GBP
₹477,326 INR
View
B+
Retailer 3
-
£3,992 GBP
SGD 7,228 SGD
View
B+
Retailer 4
-
£4,121 GBP
SGD 7,461 SGD
View
B+
Retailer 5
-
£4,285 GBP
$5,741 USD
View
B+
Retailer 6
-
£4,307 GBP
$5,771 USD
View
Final sale: no returns
B+
Retailer 7
-
£4,477 GBP
View
B+
Retailer 8
-
£4,605 GBP
$6,170 USD
View
Retailer 9
-
£4,694 GBP
$6,289 USD
View
Price last confirmed 15 days ago
B+
Retailer 10
-
£4,784 GBP
$6,410 USD
View
B+
Retailer 11
-
£4,807 GBP
A$9,908 AUD
View
B+
Retailer 12
-
£5,100 GBP
€6,508 EUR
View
B
Retailer 13
-
£6,913 GBP
View
Most Expensive
B
Queensmith
2557428908 · Oct 28
£7,355 GBP
View
13 more retailers have this diamond
Prices start from £3,468 GBPSave up to £3,887 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.

A
1.50ct Cushion
£3,468 GBP