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Cushion|Natural|GIA

1.50ct G SI2 Cushion Natural Diamond

EX • G/SI2 • GIA 2558573307

Certificate GIA 2558573307

Diamond specifications and retailer prices

From $8,612 NZD
As of November 6, 2026
Save $8,271 NZD (49%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $17,950 NZD 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 2558573307. Listed at 15 retailers as of November 4, 2026, with a 96% 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
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2558573307
Dimensions8.58 × 5.51 × 3.75 mm
L/W Ratio1.56
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Twinning Wisp, Crystal, Cloud, Cavity, Needle, Indented Natural, Natural
Top View
8.58 mm5.51 mm1.50 ctG / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 2558573307
Side View
Table 62.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 68.1%

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: $17,950 NZD|Low: $8,543 NZD|High: $18,121 NZD|Avg: $12,034 NZD|+1.7%
Queensmith
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 10$8,612 NZD
Retailer 2$9,057 NZD
Retailer 8$10,241 NZD
Retailer 3$10,605 NZD
Retailer 7$10,914 NZD
Retailer 5$11,071 NZD
Retailer 11$11,491 NZD
Retailer 4$11,774 NZD
Retailer 12$12,001 NZD
Retailer 6$12,483 NZD
Retailer 9$16,883 NZD
Queensmith$17,950 NZD

25 data points across 12 retailers

15 retailers$8,612 NZD to $16,883 NZD

A
Cheapest Retailer
-
$8,612 NZD
A
Retailer 2
-
$9,057 NZD
View
Retailer 3
-
$9,923 NZD
View
Price last confirmed 24 days ago
B+
Retailer 4
-
$10,241 NZD
View
B+
Retailer 5
-
$10,591 NZD
View
B+
Retailer 6
-
$10,605 NZD
View
Final sale: no returns
B+
Retailer 7
-
$10,914 NZD
View
B+
Retailer 8
-
$11,071 NZD
View
Retailer 9
-
$11,491 NZD
View
Price last confirmed 9 days ago
B+
Retailer 10
-
$11,675 NZD
View
B+
Retailer 11
-
$11,774 NZD
View
B+
Retailer 12
-
$12,001 NZD
View
B+
Retailer 13
-
$12,483 NZD
View
B
Retailer 14
-
$16,883 NZD
View
Most Expensive
Queensmith
2558573307 · Oct 28
$17,950 NZD
£7,835 GBP
View
Price last confirmed 9 days ago
14 more retailers have this diamond
Prices start from $8,612 NZDSave up to $8,271 NZD

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
$8,612 NZD