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Cushion|Natural|GIA

1.50ct D SI1 Cushion Natural Diamond

EX • D/SI1 • GIA 2546894345

Certificate GIA 2546894345

Diamond specifications and retailer prices

From £3,630 GBP
HK$38,000 HKD
As of November 1, 2026
Save £3,825 GBP (51%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £7,455 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 SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2546894345. Listed at 19 retailers as of October 28, 2026, with prices from £3,630 to £7,455, a £3,825 spread on the same certified stone. Queensmith lists it at £7,455. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.50
Carat
D
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2546894345
Dimensions7.50 × 5.92 × 4.04 mm
L/W Ratio1.27
Top View
7.50 mm5.92 mm1.50 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2546894345
Side View
Table 65.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 68.3%

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: Nov 1
Current: £7,455 GBP|Low: £3,601 GBP|High: £7,516 GBP|Avg: £5,069 GBP|+1.4%
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
Retailer 14
November 1, 2026
Retailer 11£3,630 GBP
Retailer 2£3,879 GBP
Retailer 14£4,054 GBP
Retailer 6£4,279 GBP
Retailer 4£4,421 GBP
Retailer 7£4,482 GBP
Retailer 9£4,595 GBP
Retailer 13£4,791 GBP
Retailer 5£4,908 GBP
Retailer 3£5,001 GBP
Retailer 12£5,234 GBP
Retailer 10£5,886 GBP
Retailer 8£7,058 GBP
Queensmith£7,455 GBP

22 data points across 14 retailers

19 retailers£3,630 GBP to £7,455 GBP

A
Cheapest Retailer
-
£3,630 GBP
HK$38,000 HKD
A
Retailer 2
-
£3,879 GBP
₹494,939 INR
View
A
Retailer 3
-
£4,054 GBP
$5,432 USD
View
Retailer 4
-
£4,169 GBP
SGD 7,549 SGD
View
Price last confirmed 18 days ago
A
Retailer 5
-
£4,279 GBP
SGD 7,747 SGD
View
A
Retailer 6
-
£4,421 GBP
$5,924 USD
View
Final sale: no returns
B+
Retailer 7
-
£4,449 GBP
$5,961 USD
View
B+
Retailer 8
-
£4,452 GBP
$5,965 USD
View
A
Retailer 9
-
£4,482 GBP
View
A
Retailer 10
-
£4,595 GBP
View
Retailer 11
-
£4,754 GBP
A$9,799 AUD
View
Price last confirmed 22 days ago
B+
Retailer 12
-
£4,791 GBP
$6,419 USD
View
B+
Retailer 13
-
£4,908 GBP
$6,577 USD
View
B+
Retailer 14
-
£5,001 GBP
$6,701 USD
View
B+
Retailer 15
-
£5,005 GBP
A$10,318 AUD
View
B+
Retailer 16
-
£5,234 GBP
€6,679 EUR
View
B+
Retailer 17
-
£5,886 GBP
ZAR 127,404 ZAR
View
B
Retailer 18
-
£7,058 GBP
View
Most Expensive
B
Queensmith
2546894345 · Oct 28
£7,455 GBP
View
18 more retailers have this diamond
Prices start from £3,630 GBPSave up to £3,825 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
£3,630 GBP