Cushion|Natural|GIA

1.05ct K SI1 Cushion Natural Diamond

ID • K/SI1 • GIA 17172162

Certificate GIA 17172162

Diamond specifications and retailer prices

From $2,148 USD
As of November 6, 2026
Save $2,561 USD (54%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $4,709 USD 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 $2,148 to $4,709, a $2,561 spread on the same certified stone. MOH London lists it at $4,709. 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
Color
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: $4,709 USD|Low: $2,148 USD|High: $4,779 USD|Avg: $3,001 USD|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 7$2,148 USD
Retailer 5$2,205 USD
Retailer 6$2,441 USD
Retailer 3$2,852 USD
Retailer 2$3,148 USD
Retailer 4$3,289 USD
MOH London$4,709 USD

45 data points across 7 retailers

11 retailers$2,148 USD to $4,709 USD

B+
Cheapest Retailer
-
$2,148 USD
B+
Retailer 2
-
$2,205 USD
View
B+
Retailer 3
-
$2,205 USD
View
B
Retailer 4
-
$2,302 USD
View
B
Retailer 5
-
$2,355 USD
View
Retailer 6
-
$2,441 USD
View
Price last confirmed 8 days ago
B
Retailer 7
-
$2,646 USD
View
B
Retailer 8
-
$2,852 USD
View
B
Retailer 9
-
$3,148 USD
View
B
Retailer 10
-
$3,289 USD
View
Most Expensive
B
MOH London
AF6439998 · Nov 4
$4,709 USD
£3,708 GBP
View
10 more retailers have this diamond
Prices start from $2,148 USDSave up to $2,561 USD

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
$2,148 USD