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Cushion|Natural|GIA

1.00ct K SI1 Cushion Natural Diamond

EX • K/SI1 • GIA 6315745344

Certificate GIA 6315745344

Diamond specifications and retailer prices

From $1,441 AUD
As of November 4, 2026
Save $1,722 AUD (54%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $3,163 AUD at MOH London · As of November 4, 2026
View at MOH London

About this 1ct natural cushion diamond

This 1ct 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 6315745344. Listed at 15 retailers as of November 4, 2026, with prices from $1,441 to $3,163, a $1,722 spread on the same certified stone. MOH London lists it at $3,163. 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

1.00
Carat
K
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6315745344
Dimensions5.79 × 5.48 × 3.74 mm
L/W Ratio1.06
Top View
5.79 mm5.48 mm1.00 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 6315745344
Side View
Table 59.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 68.3%

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 4
Current: $3,163 AUD|Low: $1,441 AUD|High: $3,699 AUD|Avg: $2,059 AUD|-14.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
November 6, 2026
Retailer 11$1,441 AUD
Retailer 7$1,458 AUD
Retailer 15$1,502 AUD
Retailer 5$1,557 AUD
Retailer 13$1,569 AUD
Retailer 2$1,680 AUD
Retailer 4$1,757 AUD
Retailer 12$1,768 AUD
Retailer 14$1,770 AUD
Retailer 9$1,944 AUD
Retailer 10$2,113 AUD
Retailer 6$2,372 AUD
Retailer 8$2,407 AUD
Retailer 3$2,458 AUD
MOH London$3,163 AUD

33 data points across 15 retailers

15 retailers$1,441 AUD to $3,163 AUD

A
Cheapest Retailer
-
$1,441 AUD
A
Retailer 2
-
$1,458 AUD
View
A
Retailer 3
-
$1,502 AUD
View
A
Retailer 4
-
$1,557 AUD
View
Retailer 5
-
$1,569 AUD
View
Price last confirmed 8 days ago
A
Retailer 6
-
$1,680 AUD
View
B+
Retailer 7
-
$1,757 AUD
View
B+
Retailer 8
-
$1,768 AUD
View
B+
Retailer 9
-
$1,770 AUD
View
A
Retailer 10
-
$1,944 AUD
View
B+
Retailer 11
-
$2,113 AUD
View
B+
Retailer 12
-
$2,372 AUD
View
B+
Retailer 13
-
$2,407 AUD
View
B+
Retailer 14
-
$2,458 AUD
View
Most Expensive
B
MOH London
9B2A01CB9 · Nov 4
$3,163 AUD
£1,711 GBP
View
14 more retailers have this diamond
Prices start from $1,441 AUDSave up to $1,722 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.

A
1.00ct Cushion
$1,441 AUD