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Cushion|Natural|GIA

1.50ct K SI2 Cushion Natural Diamond

EX • K/SI2 • GIA 1553811142

Certificate GIA 1553811142

Diamond specifications and retailer prices

From $3,902 NZD
As of November 6, 2026
Save $2,138 NZD (35%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $8,786 NZD at MOH London · As of October 29, 2026
View at MOH London

About this 1.5ct natural cushion diamond

This 1.5ct natural cushion sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1553811142. Listed at 12 retailers as of November 6, 2026, with a 55% 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
K
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 1553811142
Dimensions7.83 × 6.11 × 3.75 mm
L/W Ratio1.28
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Knot, Cavity, Feather, Indented Natural, Natural
Top View
7.83 mm6.11 mm1.50 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceStrong
CertificateGIA 1553811142
Side View
Table 68.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 61.4%

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: $8,786 NZD|Low: $3,902 NZD|High: $8,832 NZD|Avg: $5,432 NZD|-0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 9$3,902 NZD
Retailer 2$4,154 NZD
Retailer 7$4,620 NZD
Retailer 3$5,170 NZD
Retailer 10$5,226 NZD
Retailer 5$5,432 NZD
Retailer 6$5,460 NZD
Retailer 8$5,616 NZD
Retailer 4$6,039 NZD
MOH London$8,786 NZD

27 data points across 10 retailers

12 retailers$3,902 NZD to $6,039 NZD

A
Cheapest Retailer
-
$3,902 NZD
A
Retailer 2
-
$4,154 NZD
View
A
Retailer 3
-
$4,620 NZD
View
B+
Retailer 4
-
$4,905 NZD
View
A
Retailer 5
-
$5,170 NZD
View
B+
Retailer 6
-
$5,202 NZD
View
Retailer 7
-
$5,226 NZD
View
Price last confirmed 8 days ago
B+
Retailer 8
-
$5,432 NZD
View
B+
Retailer 9
-
$5,460 NZD
View
B+
Retailer 10
-
$5,616 NZD
View
B+
Retailer 11
-
$6,039 NZD
View
Most Expensive
MOH London
1F22AD26A · Oct 29
$8,786 NZD
£3,835 GBP
View
Price last confirmed 8 days ago
11 more retailers have this diamond
Prices start from $3,902 NZDSave up to $2,138 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
$3,902 NZD