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Cushion|Natural|GIA

0.51ct G SI1 Cushion Natural Diamond

EX • G/SI1 • GIA 5546242052

Certificate GIA 5546242052

Diamond specifications and retailer prices

From $947 AUD
As of November 5, 2026
Save $2,645 AUD (74%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $3,593 AUD at Diamond Quarter · As of November 5, 2026
View at Diamond Quarter

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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5546242052. Listed at 5 retailers as of November 5, 2026, with prices from $947 to $3,593, a $2,645 spread on the same certified stone. Diamond Quarter lists it at $3,593. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

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

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5546242052
Dimensions4.85 × 4.28 × 2.96 mm
L/W Ratio1.13
Culet sizeNone
Top View
4.85 mm4.28 mm0.51 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5546242052
Side View
Table 63.0%CrownGirdle: THN-THKPavilionCulet: NoneDepth 69.2%

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 5
Current: $3,593 AUD|Low: $378 AUD|High: $3,593 AUD|Avg: $1,265 AUD
Diamond Quarter
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 5, 2026
Retailer 6$378 AUD
Retailer 4$815 AUD
Retailer 3$838 AUD
Retailer 2$947 AUD
Retailer 5$1,020 AUD
Diamond Quarter$3,593 AUD

6 data points across 6 retailers

5 retailers$947 AUD to $3,593 AUD

Retailer 1
-
$758 AUD
Price last confirmed 84 days ago
Retailer 2
-
$768 AUD
View
Price last confirmed 136 days ago
Retailer 3
-
$838 AUD
View
Price last confirmed 72 days ago
B+
Retailer 4
-
$947 AUD
View
Most Expensive
B
Diamond Quarter
0.51SI1G2350DDC6N · Nov 5
$3,593 AUD
£1,944 GBP
View
4 more retailers have this diamond
Prices start from $947 AUDSave up to $2,645 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+
0.51ct Cushion
$947 AUD