CaratHunter
Plans
Cushion|Natural|GIA

1.51ct K SI1 Cushion Natural Diamond

GD • K/SI1 • GIA 6445506666

Certificate GIA 6445506666

Diamond specifications and retailer prices

From $4,095 NZD
As of November 4, 2026
Save $4,560 NZD (53%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $8,655 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 standard cut grade stated by the retailer rather than the lab and certified by GIA 6445506666. Listed at 15 retailers as of November 4, 2026, with prices from $4,095 to $8,655, a $4,560 spread on the same certified stone. MOH London lists it at $8,655. 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
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6445506666
Dimensions6.60 × 5.95 × 4.24 mm
L/W Ratio1.11
Top View
6.60 mm5.95 mm1.51 ctK / SI1
OriginNatural
CutGood
PolishVery Good
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6445506666
Side View
Table 66.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 71.2%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $8,655 NZD|Low: $4,095 NZD|High: $8,772 NZD|Avg: $5,562 NZD|-1.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 7, 2026
Retailer 6$4,095 NZD
Retailer 7$4,436 NZD
Retailer 8$4,701 NZD
Retailer 3$4,986 NZD
Retailer 2$5,507 NZD
Retailer 4$5,982 NZD
Retailer 5$6,333 NZD
MOH London$8,655 NZD

38 data points across 8 retailers

15 retailers$4,095 NZD to $8,655 NZD

B+
Cheapest Retailer
-
$4,095 NZD
B+
Retailer 2
-
$4,212 NZD
View
B+
Retailer 3
-
$4,436 NZD
View
B+
Retailer 4
-
$4,645 NZD
View
Retailer 5
-
$4,701 NZD
View
Price last confirmed 9 days ago
B+
Retailer 6
-
$4,771 NZD
View
B+
Retailer 7
-
$4,789 NZD
View
B+
Retailer 8
-
$4,986 NZD
View
B+
Retailer 9
-
$5,067 NZD
View
B+
Retailer 10
-
$5,105 NZD
View
B+
Retailer 11
-
$5,507 NZD
View
B+
Retailer 12
-
$5,982 NZD
View
Retailer 13
-
$6,027 NZD
View
Price last confirmed 15 days ago
B+
Retailer 14
-
$6,333 NZD
View
Most Expensive
B
MOH London
6ED3F1AE5 · Nov 4
$8,655 NZD
£3,778 GBP
View
14 more retailers have this diamond
Prices start from $4,095 NZDSave up to $4,560 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.

B+
1.51ct Cushion
$4,095 NZD