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Cushion|Natural|GIA

0.90ct I SI2 Cushion Natural Diamond

VG • I/SI2 • GIA 1166717038

Certificate GIA 1166717038

Diamond specifications and retailer prices

From $1,818 AUD
$1,277 USD
As of October 30, 2026
Save $917 AUD (34%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $2,735 AUD at 77 Diamonds · As of November 1, 2026
View at 77 Diamonds

About this 0.9ct natural cushion diamond

This 0.9ct natural cushion sits in the just-under-one-carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 1166717038. Listed at 4 retailers as of October 30, 2026, with prices from $1,818 to $2,735, a $917 spread on the same certified stone. 77 Diamonds lists it at $2,735. 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
I
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1166717038
Dimensions5.36 × 5.34 × 3.70 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather
Top View
5.36 mm5.34 mm0.90 ctI / SI2
OriginNatural
CutVery Good
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateGIA 1166717038
Side View
Table 61.0%CrownGirdle: THK-ETKPavilionCulet: NoneDepth 69.3%

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: Oct 30
Current: $2,735 AUD|Low: $1,656 AUD|High: $3,076 AUD|Avg: $2,501 AUD|+2.3%
77 Diamonds
Retailer 2
Retailer 3
November 1, 2026
Retailer 2$1,723 AUD
77 Diamonds$2,735 AUD
Retailer 3$3,076 AUD

37 data points across 3 retailers

4 retailers$1,818 AUD to $2,735 AUD

Retailer 1
-
$1,723 AUD
$1,210 USD
Price last confirmed 11 days ago
B+
Retailer 2
-
$1,818 AUD
$1,277 USD
View
B+
Retailer 3
-
$1,854 AUD
$1,302 USD
View
Most Expensive
B
77 Diamonds
CUSZDCWE6PAF · Nov 1
$2,735 AUD
£1,513 GBP
View
3 more retailers have this diamond
Prices start from $1,818 AUDSave up to $917 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
$1,818 AUD