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Round|Natural|GIA

0.55ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 6431478289

Certificate GIA 6431478289

Diamond specifications and retailer prices

From $711 AUD
As of November 6, 2026
Save $729 AUD (51%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $2,437 AUD at NZ Jewellers · As of September 19, 2026
View at NZ Jewellers

About this 0.55ct natural round diamond

This 0.55ct natural round sits in the half to three-quarter carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6431478289. Listed at 13 retailers as of November 2, 2026, with a 102% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

0.55
Carat
H
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 6431478289
Dimensions5.26 × 5.23 × 3.26 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Top View
5.26 mm5.23 mm0.55 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6431478289
Side View
Table 58.0%Crown 36.5°Girdle: MediumPavilion 41°Culet: NoneDepth 62.3%

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: $2,391 AUD|Low: $596 AUD|High: $2,437 AUD|Avg: $1,013 AUD|-1.9%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 5, 2026
Retailer 6$624 AUD
Retailer 8$700 AUD
Retailer 2$711 AUD
Retailer 4$763 AUD
Retailer 7$891 AUD
Retailer 9$917 AUD
Retailer 3$940 AUD
Retailer 5$1,440 AUD
NZ Jewellers$2,391 AUD

40 data points across 9 retailers

13 retailers$711 AUD to $1,440 AUD

Retailer 1
-
$624 AUD
Price last confirmed 17 days ago
Retailer 2
-
$636 AUD
View
Price last confirmed 50 days ago
Retailer 3
-
$684 AUD
View
Price last confirmed 22 days ago
Retailer 4
-
$684 AUD
View
Price last confirmed 21 days ago
A
Retailer 5
-
$711 AUD
View
Retailer 6
-
$734 AUD
View
Price last confirmed 45 days ago
A
Retailer 7
-
$763 AUD
View
A
Retailer 8
-
$891 AUD
View
A
Retailer 9
-
$917 AUD
View
A
Retailer 10
-
$940 AUD
View
B+
Retailer 11
-
$1,440 AUD
View
Retailer 12
-
$2,391 AUD
View
Price last confirmed 17 days ago
Most Expensive
NZ Jewellers
d81b8347-16aa-44c2-adee-9164ef3bf060 · Sep 19
$2,437 AUD
$1,706 USD
View
Price last confirmed 47 days ago
12 more retailers have this diamond
Prices start from $711 AUDSave up to $729 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
0.55ct Round
$711 AUD