CaratHunter
Plans
Cushion|Natural|GIA

1.05ct K SI1 Cushion Natural Diamond

ID • K/SI1 • GIA 17172162

Certificate GIA 17172162

Diamond specifications and retailer prices

From $3,126 AUD
As of November 6, 2026
Save $3,728 AUD (54%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $6,854 AUD 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 $3,126 to $6,854, a $3,728 spread on the same certified stone. MOH London lists it at $6,854. 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: $6,854 AUD|Low: $3,126 AUD|High: $6,955 AUD|Avg: $4,367 AUD|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 7$3,126 AUD
Retailer 5$3,209 AUD
Retailer 6$3,553 AUD
Retailer 3$4,151 AUD
Retailer 2$4,582 AUD
Retailer 4$4,787 AUD
MOH London$6,854 AUD

45 data points across 7 retailers

11 retailers$3,126 AUD to $6,854 AUD

B+
Cheapest Retailer
-
$3,126 AUD
B+
Retailer 2
-
$3,209 AUD
View
B+
Retailer 3
-
$3,209 AUD
View
B
Retailer 4
-
$3,350 AUD
View
B
Retailer 5
-
$3,427 AUD
View
Retailer 6
-
$3,553 AUD
View
Price last confirmed 8 days ago
B
Retailer 7
-
$3,851 AUD
View
B
Retailer 8
-
$4,151 AUD
View
B
Retailer 9
-
$4,582 AUD
View
B
Retailer 10
-
$4,787 AUD
View
Most Expensive
B
MOH London
AF6439998 · Nov 4
$6,854 AUD
£3,708 GBP
View
10 more retailers have this diamond
Prices start from $3,126 AUDSave up to $3,728 AUD

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
$3,126 AUD