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Round|Natural|GIA

0.55ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 5556597374

Certificate GIA 5556597374

Diamond specifications and retailer prices

From $1,079 AUD
As of November 6, 2026
Save $1,498 AUD (58%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $4,450 AUD at NZ Jewellers · As of October 30, 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 5556597374. Listed at 20 retailers as of November 2, 2026, with a 139% 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
D
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 5556597374
Dimensions5.22 × 5.19 × 3.24 mm
L/W Ratio1.01
Girdle conditionFaceted
Top View
5.22 mm5.19 mm0.55 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5556597374
Side View
Table 58.0%Crown 36°Girdle: Slightly ThickPavilion 40.6°Culet: NoneDepth 62.2%

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: $4,450 AUD|Low: $1,063 AUD|High: $4,450 AUD|Avg: $1,770 AUD|+3.5%
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
November 6, 2026
Retailer 3$1,079 AUD
Retailer 2$1,083 AUD
Retailer 15$1,297 AUD
Retailer 17$1,314 AUD
Retailer 7$1,419 AUD
Retailer 10$1,419 AUD
Retailer 8$1,474 AUD
Retailer 6$1,531 AUD
Retailer 16$1,571 AUD
Retailer 13$1,621 AUD
Retailer 11$1,623 AUD
Retailer 9$1,637 AUD
Retailer 18$1,816 AUD
Retailer 4$1,831 AUD
Retailer 14$1,878 AUD
Retailer 12$2,171 AUD
Retailer 5$2,577 AUD
NZ Jewellers$4,450 AUD

27 data points across 18 retailers

20 retailers$1,079 AUD to $2,577 AUD

A
Cheapest Retailer
-
$1,079 AUD
A
Retailer 2
-
$1,083 AUD
View
B+
Retailer 3
-
$1,297 AUD
View
Final sale: no returns
A
Retailer 4
-
$1,314 AUD
View
Retailer 5
-
$1,419 AUD
View
Price last confirmed 8 days ago
Retailer 6
-
$1,419 AUD
View
Price last confirmed 9 days ago
Retailer 7
-
$1,474 AUD
View
Price last confirmed 9 days ago
B+
Retailer 8
-
$1,531 AUD
View
B+
Retailer 9
-
$1,571 AUD
View
B+
Retailer 10
-
$1,621 AUD
View
B+
Retailer 11
-
$1,623 AUD
View
Retailer 12
-
$1,637 AUD
View
Price last confirmed 10 days ago
B+
Retailer 13
-
$1,816 AUD
View
B+
Retailer 14
-
$1,831 AUD
View
B+
Retailer 15
-
$1,846 AUD
View
Retailer 16
-
$1,870 AUD
View
Price last confirmed 32 days ago
B+
Retailer 17
-
$1,878 AUD
View
B
Retailer 18
-
$2,171 AUD
View
B
Retailer 19
-
$2,577 AUD
View
Most Expensive
NZ Jewellers
043d5255-ff83-40b6-b042-a81e81d9236f · Oct 30
$4,450 AUD
$3,115 USD
View
Price last confirmed 7 days ago
19 more retailers have this diamond
Prices start from $1,079 AUDSave up to $1,498 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
$1,079 AUD