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Cushion|Natural|GIA

1.50ct G SI2 Cushion Natural Diamond

EX • G/SI2 • GIA 6522429378

Certificate GIA 6522429378

Diamond specifications and retailer prices

From £2,152 GBP
As of November 6, 2026
Save £2,505 GBP (54%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £5,821 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 6522429378. Listed at 15 retailers as of November 4, 2026, with a 116% 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 6522429378
Dimensions7.93 × 5.59 × 3.76 mm
L/W Ratio1.42
Top View
7.93 mm5.59 mm1.50 ctG / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6522429378
Side View
Table 67.0%CrownGirdle: THN-STKPavilionCulet: NoneDepth 67.3%

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 6
Current: £5,821 GBP|Low: £2,132 GBP|High: £5,859 GBP|Avg: £3,192 GBP|+2.5%
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 12£2,152 GBP
Retailer 2£2,284 GBP
Retailer 9£2,528 GBP
Retailer 4£2,577 GBP
Retailer 6£2,690 GBP
Retailer 8£2,711 GBP
Retailer 13£2,792 GBP
Retailer 10£2,891 GBP
Retailer 5£2,901 GBP
Retailer 3£2,988 GBP
Retailer 7£3,249 GBP
Retailer 11£4,657 GBP
Queensmith£5,821 GBP

25 data points across 13 retailers

15 retailers£2,152 GBP to £4,657 GBP

A
Cheapest Retailer
-
£2,152 GBP
A
Retailer 2
-
£2,284 GBP
View
A
Retailer 3
-
£2,528 GBP
View
A
Retailer 4
-
£2,577 GBP
View
Final sale: no returns
A
Retailer 5
-
£2,638 GBP
View
A
Retailer 6
-
£2,690 GBP
View
A
Retailer 7
-
£2,711 GBP
View
Retailer 8
-
£2,792 GBP
View
Price last confirmed 9 days ago
A
Retailer 9
-
£2,891 GBP
View
A
Retailer 10
-
£2,901 GBP
View
A
Retailer 11
-
£2,927 GBP
View
A
Retailer 12
-
£2,988 GBP
View
A
Retailer 13
-
£3,249 GBP
View
B+
Retailer 14
-
£4,657 GBP
View
Most Expensive
Queensmith
6522429378 · Oct 28
£5,821 GBP
View
Price last confirmed 9 days ago
14 more retailers have this diamond
Prices start from £2,152 GBPSave up to £2,505 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
£2,152 GBP