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Cushion|Natural|GIA

1.05ct K SI1 Cushion Natural Diamond

ID • K/SI1 • GIA 17172162

Certificate GIA 17172162

Diamond specifications and retailer prices

From $3,875 NZD
As of November 6, 2026
Save $4,620 NZD (54%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $8,495 NZD at MOH London · As of November 4, 2026
View at MOH London

About this 1.05ct natural cushion diamond

This 1.05ct natural cushion sits in the classic one-carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 17172162. Listed at 11 retailers as of November 4, 2026, with prices from $3,875 to $8,495, a $4,620 spread on the same certified stone. MOH London lists it at $8,495. 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

1.05
Carat
K
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishVery Good
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 17172162
Dimensions6.08 × 5.83 × 3.54 mm
L/W Ratio1.04
Culet sizeNone
Top View
6.08 mm5.83 mm1.05 ctK / SI1
OriginNatural
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 17172162
Side View
Table 63.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 60.7%

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 6
Current: $8,495 NZD|Low: $3,875 NZD|High: $8,621 NZD|Avg: $5,409 NZD|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 7$3,875 NZD
Retailer 5$3,978 NZD
Retailer 6$4,403 NZD
Retailer 3$5,145 NZD
Retailer 2$5,679 NZD
Retailer 4$5,933 NZD
MOH London$8,495 NZD

44 data points across 7 retailers

11 retailers$3,875 NZD to $8,495 NZD

B+
Cheapest Retailer
-
$3,875 NZD
B+
Retailer 2
-
$3,978 NZD
View
B+
Retailer 3
-
$3,978 NZD
View
B
Retailer 4
-
$4,153 NZD
View
B
Retailer 5
-
$4,248 NZD
View
Retailer 6
-
$4,403 NZD
View
Price last confirmed 9 days ago
B
Retailer 7
-
$4,773 NZD
View
B
Retailer 8
-
$5,145 NZD
View
B
Retailer 9
-
$5,679 NZD
View
B
Retailer 10
-
$5,933 NZD
View
Most Expensive
B
MOH London
AF6439998 · Nov 4
$8,495 NZD
£3,708 GBP
View
10 more retailers have this diamond
Prices start from $3,875 NZDSave up to $4,620 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+
1.05ct Cushion
$3,875 NZD