CaratHunter
Plans
Cushion|Natural|GIA

0.90ct K SI1 Cushion Natural Diamond

GD • K/SI1 • GIA 5366601877

Certificate GIA 5366601877

Diamond specifications and retailer prices

From $1,924 AUD
As of November 6, 2026
Save $2,222 AUD (54%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $4,146 AUD at MOH London · As of November 2, 2026
View at MOH London

About this 0.9ct natural cushion diamond

This 0.9ct natural cushion sits in the just-under-one-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 5366601877. Listed at 15 retailers as of November 2, 2026, with prices from $1,924 to $4,146, a $2,222 spread on the same certified stone. MOH London lists it at $4,146. 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

0.90
Carat
K
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 5366601877
Dimensions5.42 × 5.33 × 3.63 mm
L/W Ratio1.02
Top View
5.42 mm5.33 mm0.90 ctK / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 5366601877
Side View
Table 59.0%CrownGirdle: STK-ETKPavilionCulet: NoneDepth 68.0%

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: $4,146 AUD|Low: $1,987 AUD|High: $4,196 AUD|Avg: $2,725 AUD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 7, 2026
Retailer 6$1,987 AUD
Retailer 8$2,016 AUD
Retailer 5$2,144 AUD
Retailer 9$2,278 AUD
Retailer 7$2,388 AUD
Retailer 2$2,624 AUD
Retailer 3$3,214 AUD
Retailer 4$3,465 AUD
MOH London$4,146 AUD

45 data points across 9 retailers

15 retailers$1,924 AUD to $4,146 AUD

B+
Cheapest Retailer
-
$1,924 AUD
B+
Retailer 2
-
$1,959 AUD
View
B
Retailer 3
-
$1,987 AUD
View
Retailer 4
-
$1,987 AUD
View
Price last confirmed 17 days ago
B
Retailer 5
-
$2,006 AUD
View
B
Retailer 6
-
$2,016 AUD
View
B
Retailer 7
-
$2,068 AUD
View
Retailer 8
-
$2,144 AUD
View
Price last confirmed 9 days ago
B
Retailer 9
-
$2,278 AUD
View
B
Retailer 10
-
$2,388 AUD
View
B
Retailer 11
-
$2,624 AUD
View
B
Retailer 12
-
$3,214 AUD
View
C
Retailer 13
-
$3,382 AUD
View
B
Retailer 14
-
$3,465 AUD
View
Most Expensive
C
MOH London
74A7CDBAF · Nov 2
$4,146 AUD
£2,243 GBP
View
14 more retailers have this diamond
Prices start from $1,924 AUDSave up to $2,222 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+
0.90ct Cushion
$1,924 AUD