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Cushion|Natural|GIA

0.51ct G SI1 Cushion Natural Diamond

GD • G/SI1 • GIA 7568435588

Certificate GIA 7568435588

Diamond specifications and retailer prices

From $589 AUD
As of November 6, 2026
Save $1,269 AUD (68%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $2,606 AUD at Queensmith · As of October 28, 2026
View at Queensmith

About this 0.51ct natural cushion diamond

This 0.51ct natural cushion sits in the half to three-quarter carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 7568435588. Listed at 18 retailers as of November 1, 2026, with a 215% 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

0.51
Carat
G
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 7568435588
Dimensions5.81 × 4.15 × 2.67 mm
L/W Ratio1.40
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Crystal, Cloud
Top View
5.81 mm4.15 mm0.51 ctG / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 7568435588
Side View
Table 63.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 64.4%

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 6
Current: $2,606 AUD|Low: $589 AUD|High: $2,606 AUD|Avg: $1,117 AUD|+3.7%
Queensmith
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 2$589 AUD
Retailer 15$688 AUD
Retailer 4$742 AUD
Retailer 5$830 AUD
Retailer 14$867 AUD
Retailer 6$929 AUD
Retailer 8$982 AUD
Retailer 7$995 AUD
Retailer 10$1,000 AUD
Retailer 13$1,009 AUD
Retailer 3$1,092 AUD
Retailer 9$1,189 AUD
Retailer 11$1,241 AUD
Retailer 12$1,859 AUD
Queensmith$2,606 AUD

25 data points across 15 retailers

18 retailers$589 AUD to $1,859 AUD

A
Cheapest Retailer
-
$589 AUD
B+
Retailer 2
-
$688 AUD
View
A
Retailer 3
-
$742 AUD
View
Final sale: no returns
Retailer 4
-
$830 AUD
View
Price last confirmed 17 days ago
Retailer 5
-
$867 AUD
View
Price last confirmed 9 days ago
B+
Retailer 6
-
$929 AUD
View
B
Retailer 7
-
$978 AUD
View
B+
Retailer 8
-
$982 AUD
View
B
Retailer 9
-
$995 AUD
View
B+
Retailer 10
-
$1,000 AUD
View
B
Retailer 11
-
$1,009 AUD
View
B
Retailer 12
-
$1,092 AUD
View
B
Retailer 13
-
$1,121 AUD
View
B
Retailer 14
-
$1,189 AUD
View
B
Retailer 15
-
$1,241 AUD
View
Retailer 16
-
$1,354 AUD
View
Price last confirmed 34 days ago
B
Retailer 17
-
$1,859 AUD
View
Most Expensive
Queensmith
7568435588 · Oct 28
$2,606 AUD
£1,410 GBP
View
Price last confirmed 9 days ago
17 more retailers have this diamond
Prices start from $589 AUDSave up to $1,269 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
0.51ct Cushion
$589 AUD