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Round|Natural|GIA

0.55ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 2558408841

Certificate GIA 2558408841

Diamond specifications and retailer prices

From $899 AUD
As of November 6, 2026
Save $2,883 AUD (76%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $3,781 AUD at NZ Jewellers · As of November 4, 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 D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2558408841. Listed at 21 retailers as of November 4, 2026, with prices from $899 to $3,781, a $2,883 spread on the same certified stone. NZ Jewellers lists it at $3,781. 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
D
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle34.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 2558408841
Dimensions5.28 × 5.30 × 3.25 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal
Top View
5.28 mm5.30 mm0.55 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2558408841
Side View
Table 57.0%Crown 34.5°Girdle: Slightly ThickPavilion 40.8°Culet: NDepth 61.4%

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: $3,781 AUD|Low: $896 AUD|High: $3,781 AUD|Avg: $1,495 AUD
NZ Jewellers
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
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
November 6, 2026
Retailer 2$899 AUD
Retailer 3$914 AUD
Retailer 18$1,100 AUD
Retailer 12$1,113 AUD
Retailer 8$1,121 AUD
Retailer 9$1,131 AUD
Retailer 7$1,206 AUD
Retailer 17$1,213 AUD
Retailer 6$1,253 AUD
Retailer 14$1,261 AUD
Retailer 4$1,391 AUD
Retailer 10$1,409 AUD
Retailer 16$1,441 AUD
Retailer 15$1,444 AUD
Retailer 13$1,551 AUD
Retailer 11$1,621 AUD
Retailer 20$1,710 AUD
Retailer 5$1,958 AUD
Retailer 19$2,206 AUD
NZ Jewellers$3,781 AUD

21 data points across 20 retailers

21 retailers$899 AUD to $3,781 AUD

A
Cheapest Retailer
-
$899 AUD
A
Retailer 2
-
$914 AUD
View
A
Retailer 3
-
$1,100 AUD
View
A
Retailer 4
-
$1,113 AUD
View
Final sale: no returns
Retailer 5
-
$1,121 AUD
View
Price last confirmed 8 days ago
A
Retailer 6
-
$1,121 AUD
View
Retailer 7
-
$1,131 AUD
View
Price last confirmed 15 days ago
A
Retailer 8
-
$1,206 AUD
View
A
Retailer 9
-
$1,213 AUD
View
A
Retailer 10
-
$1,253 AUD
View
A
Retailer 11
-
$1,261 AUD
View
B+
Retailer 12
-
$1,391 AUD
View
B+
Retailer 13
-
$1,409 AUD
View
B+
Retailer 14
-
$1,441 AUD
View
B+
Retailer 15
-
$1,444 AUD
View
B+
Retailer 16
-
$1,551 AUD
View
B+
Retailer 17
-
$1,621 AUD
View
B+
Retailer 18
-
$1,710 AUD
View
B+
Retailer 19
-
$1,958 AUD
View
B
Retailer 20
-
$2,206 AUD
View
Most Expensive
B
NZ Jewellers
905770cf-109d-4dbb-96ea-e0d56c22b224 · Nov 4
$3,781 AUD
$2,647 USD
View
20 more retailers have this diamond
Prices start from $899 AUDSave up to $2,883 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
$899 AUD