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Cushion|Natural|GIA

1.50ct D SI2 Cushion Natural Diamond

GD • D/SI2 • GIA 6551490082

Certificate GIA 6551490082

Diamond specifications and retailer prices

From £2,981 GBP
HK$31,200 HKD
As of October 30, 2026
Save £3,834 GBP (56%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £6,815 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 6551490082. Listed at 14 retailers as of October 28, 2026, with prices from £2,981 to £6,815, a £3,834 spread on the same certified stone. Queensmith lists it at £6,815. 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 6551490082
Dimensions8.16 × 5.42 × 3.83 mm
L/W Ratio1.51
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Indented Natural, Cavity, Needle
Top View
8.16 mm5.42 mm1.50 ctD / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6551490082
Side View
Table 60.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 70.6%

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: £6,815 GBP|Low: £2,981 GBP|High: £6,862 GBP|Avg: £4,345 GBP|+2.1%
Queensmith
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 31, 2026
Retailer 10£2,981 GBP
Retailer 7£3,227 GBP
Retailer 3£3,539 GBP
Retailer 5£3,679 GBP
Retailer 11£3,699 GBP
Retailer 9£3,821 GBP
Retailer 6£3,910 GBP
Retailer 12£4,015 GBP
Retailer 4£4,034 GBP
Retailer 13£4,122 GBP
Retailer 2£4,535 GBP
Retailer 8£6,417 GBP
Queensmith£6,815 GBP

33 data points across 13 retailers

14 retailers£2,981 GBP to £6,815 GBP

A
Cheapest Retailer
-
£2,981 GBP
HK$31,200 HKD
A
Retailer 2
-
£3,227 GBP
₹411,846 INR
View
A
Retailer 3
-
£3,539 GBP
SGD 6,408 SGD
View
B+
Retailer 4
-
£3,679 GBP
$4,930 USD
View
B+
Retailer 5
-
£3,699 GBP
$4,956 USD
View
Final sale: no returns
B+
Retailer 6
-
£3,821 GBP
SGD 6,918 SGD
View
A
Retailer 7
-
£3,910 GBP
View
B+
Retailer 8
-
£4,015 GBP
$5,380 USD
View
Retailer 9
-
£4,034 GBP
$5,405 USD
View
Price last confirmed 16 days ago
B+
Retailer 10
-
£4,093 GBP
A$8,438 AUD
View
B+
Retailer 11
-
£4,122 GBP
$5,522 USD
View
B+
Retailer 12
-
£4,535 GBP
€5,787 EUR
View
B
Retailer 13
-
£6,417 GBP
View
Most Expensive
B
Queensmith
6551490082 · Oct 28
£6,815 GBP
View
13 more retailers have this diamond
Prices start from £2,981 GBPSave up to £3,834 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
£2,981 GBP