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Cushion|Natural|GIA

0.90ct K SI1 Cushion Natural Diamond

VG • K/SI1 • GIA 6251764573

Certificate GIA 6251764573

Diamond specifications and retailer prices

From $1,298 AUD
As of November 4, 2026
Save $1,508 AUD (54%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $2,806 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 very-good cut grade stated by the retailer rather than the lab and certified by GIA 6251764573. Listed at 5 retailers as of November 2, 2026, with prices from $1,298 to $2,806, a $1,508 spread on the same certified stone. MOH London lists it at $2,806. 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
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6251764573
Dimensions5.67 × 5.07 × 3.72 mm
L/W Ratio1.12
Top View
5.67 mm5.07 mm0.90 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryGood
FluorescenceNone
CertificateGIA 6251764573
Side View
Table 60.0%CrownGirdle: XTN-ETKPavilionCulet: NoneDepth 73.3%

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: Nov 4
Current: $2,806 AUD|Low: $1,298 AUD|High: $2,841 AUD|Avg: $2,072 AUD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 7, 2026
Retailer 4$1,298 AUD
Retailer 5$1,588 AUD
Retailer 2$1,806 AUD
Retailer 3$2,137 AUD
MOH London$2,806 AUD

40 data points across 5 retailers

5 retailers$1,298 AUD to $2,806 AUD

B+
Cheapest Retailer
-
$1,298 AUD
B+
Retailer 2
-
$1,588 AUD
View
B
Retailer 3
-
$1,806 AUD
View
B
Retailer 4
-
$2,137 AUD
View
Most Expensive
B
MOH London
0E5391725 · Nov 2
$2,806 AUD
£1,518 GBP
View
4 more retailers have this diamond
Prices start from $1,298 AUDSave up to $1,508 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
$1,298 AUD