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Cushion|Natural|GIA

1.50ct K SI1 Cushion Natural Diamond

VG • K/SI1 • GIA 2556551357

Certificate GIA 2556551357

Diamond specifications and retailer prices

From $4,618 NZD
As of November 6, 2026
Save $5,595 NZD (55%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $10,213 NZD at MOH London · As of November 4, 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 SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 2556551357. Listed at 14 retailers as of November 4, 2026, with prices from $4,618 to $10,213, a $5,595 spread on the same certified stone. MOH London lists it at $10,213. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.50
Carat
K
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2556551357
Dimensions8.26 × 5.54 × 3.93 mm
L/W Ratio1.49
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Cloud, Needle, Indented Natural, Natural
Top View
8.26 mm5.54 mm1.50 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2556551357
Side View
Table 62.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 70.9%

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: $10,213 NZD|Low: $4,618 NZD|High: $10,360 NZD|Avg: $6,612 NZD|-1.4%
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$4,618 NZD
Retailer 2$4,880 NZD
Retailer 6$5,451 NZD
Retailer 3$5,940 NZD
Retailer 7$6,341 NZD
Retailer 10$6,384 NZD
Retailer 8$6,579 NZD
Retailer 4$7,129 NZD
Retailer 5$7,474 NZD
MOH London$10,213 NZD

26 data points across 10 retailers

14 retailers$4,618 NZD to $10,213 NZD

A
Cheapest Retailer
-
$4,618 NZD
A
Retailer 2
-
$4,880 NZD
View
B+
Retailer 3
-
$5,451 NZD
View
B+
Retailer 4
-
$5,738 NZD
View
B+
Retailer 5
-
$5,745 NZD
View
B+
Retailer 6
-
$5,940 NZD
View
B+
Retailer 7
-
$6,083 NZD
View
Retailer 8
-
$6,162 NZD
View
Price last confirmed 21 days ago
B+
Retailer 9
-
$6,341 NZD
View
B+
Retailer 10
-
$6,384 NZD
View
B+
Retailer 11
-
$6,579 NZD
View
B+
Retailer 12
-
$7,129 NZD
View
B
Retailer 13
-
$7,474 NZD
View
Most Expensive
B
MOH London
B558C4967 · Nov 4
$10,213 NZD
£4,458 GBP
View
13 more retailers have this diamond
Prices start from $4,618 NZDSave up to $5,595 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
$4,618 NZD