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Cushion|Natural|GIA

1.50ct G SI2 Cushion Natural Diamond

EX • G/SI2 • GIA 2567166126

Certificate GIA 2567166126

Diamond specifications and retailer prices

From £3,108 GBP
As of November 6, 2026
Save £3,466 GBP (53%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £6,926 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 2567166126. Listed at 15 retailers as of November 4, 2026, with a 112% 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 2567166126
Dimensions8.80 × 5.47 × 3.73 mm
L/W Ratio1.61
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Feather, Indented Natural, Natural
Top View
8.80 mm5.47 mm1.50 ctG / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2567166126
Side View
Table 67.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 68.2%

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: £6,926 GBP|Low: £3,079 GBP|High: £6,969 GBP|Avg: £4,419 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
Retailer 14
November 6, 2026
Retailer 12£3,108 GBP
Retailer 2£3,275 GBP
Retailer 5£3,647 GBP
Retailer 10£3,671 GBP
Retailer 4£3,820 GBP
Retailer 14£3,946 GBP
Retailer 9£3,975 GBP
Retailer 7£3,987 GBP
Retailer 13£4,139 GBP
Retailer 6£4,253 GBP
Retailer 3£4,349 GBP
Retailer 8£4,657 GBP
Retailer 11£6,574 GBP
Queensmith£6,926 GBP

25 data points across 14 retailers

15 retailers£3,108 GBP to £6,574 GBP

A
Cheapest Retailer
-
£3,108 GBP
A
Retailer 2
-
£3,275 GBP
View
A
Retailer 3
-
£3,647 GBP
View
A
Retailer 4
-
£3,671 GBP
View
A
Retailer 5
-
£3,795 GBP
View
A
Retailer 6
-
£3,820 GBP
View
Final sale: no returns
Retailer 7
-
£3,946 GBP
View
Price last confirmed 11 days ago
A
Retailer 8
-
£3,975 GBP
View
A
Retailer 9
-
£3,987 GBP
View
Retailer 10
-
£4,139 GBP
View
Price last confirmed 9 days ago
B+
Retailer 11
-
£4,253 GBP
View
B+
Retailer 12
-
£4,349 GBP
View
B+
Retailer 13
-
£4,657 GBP
View
B
Retailer 14
-
£6,574 GBP
View
Most Expensive
Queensmith
2567166126 · Oct 28
£6,926 GBP
View
Price last confirmed 9 days ago
14 more retailers have this diamond
Prices start from £3,108 GBPSave up to £3,466 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
£3,108 GBP