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Cushion|Natural|GIA

1.51ct K SI1 Cushion Natural Diamond

VG • K/SI1 • GIA 2528970528

Certificate GIA 2528970528

Diamond specifications and retailer prices

From $4,104 NZD
As of November 5, 2026
Save $4,769 NZD (54%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $8,873 NZD at MOH London · As of November 4, 2026
View at MOH London

About this 1.51ct natural cushion diamond

This 1.51ct 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 2528970528. Listed at 12 retailers as of November 4, 2026, with prices from $4,104 to $8,873, a $4,769 spread on the same certified stone. MOH London lists it at $8,873. 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

1.51
Carat
K
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle37°
Pavilion angle39.4°
OriginNatural
Grading LabGIA
CertificateGIA 2528970528
Dimensions6.59 × 6.55 × 4.45 mm
L/W Ratio1.01
Top View
6.59 mm6.55 mm1.51 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2528970528
Side View
Table 61.0%Crown 37°Girdle: MED-THKPavilion 39.4°Culet: NoneDepth 67.9%

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 5
Current: $8,873 NZD|Low: $4,104 NZD|High: $8,992 NZD|Avg: $5,572 NZD|+0.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 7, 2026
Retailer 4$4,104 NZD
Retailer 7$4,252 NZD
Retailer 12$4,548 NZD
Retailer 5$4,925 NZD
Retailer 9$4,979 NZD
Retailer 8$5,078 NZD
Retailer 3$5,332 NZD
Retailer 2$5,374 NZD
Retailer 10$5,507 NZD
Retailer 11$5,556 NZD
Retailer 6$6,196 NZD
MOH London$8,873 NZD

43 data points across 12 retailers

12 retailers$4,104 NZD to $8,873 NZD

A
Cheapest Retailer
-
$4,104 NZD
A
Retailer 2
-
$4,252 NZD
View
A
Retailer 3
-
$4,548 NZD
View
A
Retailer 4
-
$4,925 NZD
View
B+
Retailer 5
-
$4,979 NZD
View
Retailer 6
-
$5,078 NZD
View
Price last confirmed 13 days ago
B+
Retailer 7
-
$5,332 NZD
View
A
Retailer 8
-
$5,374 NZD
View
B+
Retailer 9
-
$5,507 NZD
View
B+
Retailer 10
-
$5,556 NZD
View
B+
Retailer 11
-
$6,196 NZD
View
Most Expensive
B
MOH London
34FD10842 · Nov 4
$8,873 NZD
£3,873 GBP
View
11 more retailers have this diamond
Prices start from $4,104 NZDSave up to $4,769 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
1.51ct Cushion
$4,104 NZD