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Cushion|Natural|GIA

0.90ct E SI1 Cushion Natural Diamond

VG • E/SI1 • GIA 2185397505

Certificate GIA 2185397505

Diamond specifications and retailer prices

From $1,125 AUD
$790 USD
As of October 28, 2026
Save $1,463 AUD (57%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $2,736 AUD at Moon Ocean · As of September 30, 2026
View at Moon Ocean

About this 0.9ct natural cushion diamond

This 0.9ct natural cushion sits in the just-under-one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 2185397505. Listed at 15 retailers as of October 28, 2026, with a 130% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
E
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryGood
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 2185397505
Dimensions5.36 × 5.07 × 3.89 mm
L/W Ratio1.06
Top View
5.36 mm5.07 mm0.90 ctE / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryGood
FluorescenceStrong
CertificateGIA 2185397505
Side View
Table 66.0%CrownGirdle: Ext. ThickPavilionCulet: NDepth 76.6%

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: Oct 28
Current: $2,736 AUD|Low: $1,076 AUD|High: $11,907 AUD|Avg: $2,035 AUD|-77.0%
Moon Ocean
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
Retailer 16
Retailer 17
October 30, 2026
Retailer 12$1,125 AUD
Retailer 14$1,173 AUD
Retailer 7$1,177 AUD
Retailer 16$1,273 AUD
Retailer 4$1,287 AUD
Retailer 6$1,375 AUD
Retailer 17$1,469 AUD
Retailer 13$1,495 AUD
Retailer 2$1,646 AUD
Retailer 5$1,694 AUD
Retailer 8$1,720 AUD
Retailer 11$2,052 AUD
Retailer 15$2,112 AUD
Retailer 3$2,477 AUD
Retailer 10$2,587 AUD
Moon Ocean$2,736 AUD
Retailer 9$4,914 AUD

46 data points across 17 retailers

15 retailers$1,125 AUD to $2,587 AUD

A
Cheapest Retailer
-
$1,125 AUD
$790 USD
A
Retailer 2
-
$1,173 AUD
$824 USD
View
Final sale: no returns
A
Retailer 3
-
$1,177 AUD
$827 USD
View
B+
Retailer 4
-
$1,273 AUD
$894 USD
View
B+
Retailer 5
-
$1,287 AUD
$904 USD
View
B+
Retailer 6
-
$1,375 AUD
$966 USD
View
B+
Retailer 7
-
$1,469 AUD
$1,032 USD
View
B+
Retailer 8
-
$1,495 AUD
$1,050 USD
View
B+
Retailer 9
-
$1,646 AUD
£910 GBP
View
B+
Retailer 10
-
$1,720 AUD
$1,208 USD
View
B+
Retailer 11
-
$2,052 AUD
ZAR 23,290 ZAR
View
Retailer 12
-
$2,112 AUD
View
Price last confirmed 26 days ago
B+
Retailer 13
-
$2,477 AUD
CA$2,416 CAD
View
B+
Retailer 14
-
$2,587 AUD
£1,431 GBP
View
Most Expensive
Moon Ocean
NVN-C29FD9320-505 · Sep 30
$2,736 AUD
£1,513 GBP
View
Price last confirmed 30 days ago
14 more retailers have this diamond
Prices start from $1,125 AUDSave up to $1,463 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
0.90ct Cushion
$1,125 AUD