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Round|Natural|GIA

0.55ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 1559947635

Certificate GIA 1559947635

Diamond specifications and retailer prices

From $931 AUD
As of November 6, 2026
Save $1,384 AUD (60%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $4,077 AUD at NZ Jewellers · As of September 24, 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 1559947635. Listed at 22 retailers as of November 2, 2026, with a 149% 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 angle35°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 1559947635
Dimensions5.21 × 5.24 × 3.26 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Crystal
Top View
5.21 mm5.24 mm0.55 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1559947635
Side View
Table 60.0%Crown 35°Girdle: MediumPavilion 41.4°Culet: NoneDepth 62.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $3,928 AUD|Low: $914 AUD|High: $3,928 AUD|Avg: $1,756 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
November 6, 2026
Retailer 15$931 AUD
Retailer 4$1,166 AUD
Retailer 11$1,201 AUD
Retailer 3$1,280 AUD
Retailer 9$1,286 AUD
Retailer 10$1,289 AUD
Retailer 8$1,430 AUD
Retailer 7$1,478 AUD
Retailer 16$1,496 AUD
Retailer 2$1,627 AUD
Retailer 5$1,674 AUD
Retailer 6$1,748 AUD
Retailer 12$1,773 AUD
Retailer 13$1,951 AUD
Retailer 14$2,316 AUD
NZ Jewellers$3,928 AUD

27 data points across 16 retailers

22 retailers$931 AUD to $2,316 AUD

A
Cheapest Retailer
-
$931 AUD
A
Retailer 2
-
$1,166 AUD
View
Final sale: no returns
Retailer 3
-
$1,200 AUD
View
Price last confirmed 38 days ago
A
Retailer 4
-
$1,201 AUD
View
A
Retailer 5
-
$1,280 AUD
View
A
Retailer 6
-
$1,286 AUD
View
A
Retailer 7
-
$1,289 AUD
View
Retailer 8
-
$1,300 AUD
View
Price last confirmed 36 days ago
Retailer 9
-
$1,350 AUD
View
Price last confirmed 38 days ago
Retailer 10
-
$1,430 AUD
View
Price last confirmed 19 days ago
Retailer 11
-
$1,478 AUD
View
Price last confirmed 14 days ago
B+
Retailer 12
-
$1,496 AUD
View
Retailer 13
-
$1,500 AUD
View
Price last confirmed 38 days ago
B+
Retailer 14
-
$1,627 AUD
View
B+
Retailer 15
-
$1,674 AUD
View
B+
Retailer 16
-
$1,748 AUD
View
B+
Retailer 17
-
$1,773 AUD
View
B+
Retailer 18
-
$1,951 AUD
View
Retailer 19
-
$1,990 AUD
View
Price last confirmed 33 days ago
B
Retailer 20
-
$2,316 AUD
View
Retailer 21
-
$3,928 AUD
View
Price last confirmed 14 days ago
Most Expensive
NZ Jewellers
e97691f5-6850-4cc3-a733-ef7ac86c9fc3 · Sep 24
$4,077 AUD
$2,854 USD
View
Price last confirmed 43 days ago
21 more retailers have this diamond
Prices start from $931 AUDSave up to $1,384 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
$931 AUD