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Cushion|Natural|GIA

1.50ct G SI2 Cushion Natural Diamond

EX • G/SI2 • GIA 2546450390

Certificate GIA 2546450390

Diamond specifications and retailer prices

From £2,821 GBP
As of November 6, 2026
Save £3,106 GBP (52%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £6,609 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 G colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2546450390. Listed at 15 retailers as of November 4, 2026, with a 110% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
G
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2546450390
Dimensions7.72 × 5.96 × 3.91 mm
L/W Ratio1.30
Top View
7.72 mm5.96 mm1.50 ctG / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2546450390
Side View
Table 70.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 65.6%

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: Nov 6
Current: £6,609 GBP|Low: £2,821 GBP|High: £6,637 GBP|Avg: £3,976 GBP|+1.3%
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
November 6, 2026
Retailer 11£2,821 GBP
Retailer 2£2,991 GBP
Retailer 5£3,327 GBP
Retailer 8£3,425 GBP
Retailer 13£3,444 GBP
Retailer 4£3,615 GBP
Retailer 7£3,674 GBP
Retailer 3£3,754 GBP
Retailer 10£3,773 GBP
Retailer 12£3,845 GBP
Retailer 6£4,199 GBP
Retailer 9£5,928 GBP
Queensmith£6,609 GBP

31 data points across 13 retailers

15 retailers£2,821 GBP to £5,928 GBP

A
Cheapest Retailer
-
£2,821 GBP
A
Retailer 2
-
£2,991 GBP
View
A
Retailer 3
-
£3,327 GBP
View
A
Retailer 4
-
£3,425 GBP
View
A
Retailer 5
-
£3,444 GBP
View
Final sale: no returns
A
Retailer 6
-
£3,543 GBP
View
Retailer 7
-
£3,615 GBP
View
Price last confirmed 12 days ago
A
Retailer 8
-
£3,674 GBP
View
Retailer 9
-
£3,754 GBP
View
Price last confirmed 22 days ago
A
Retailer 10
-
£3,773 GBP
View
A
Retailer 11
-
£3,845 GBP
View
B+
Retailer 12
-
£4,112 GBP
View
B+
Retailer 13
-
£4,199 GBP
View
B+
Retailer 14
-
£5,928 GBP
View
Most Expensive
Queensmith
2546450390 · Oct 28
£6,609 GBP
View
Price last confirmed 9 days ago
14 more retailers have this diamond
Prices start from £2,821 GBPSave up to £3,106 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
£2,821 GBP