CaratHunter
Plans
Round|Natural|GIA

0.55ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 6511419240

Certificate GIA 6511419240

Diamond specifications and retailer prices

From $1,543 AUD
As of November 4, 2026
Save $2,003 AUD (56%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $4,735 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 6511419240. Listed at 22 retailers as of November 4, 2026, with a 130% 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
FluorescenceFaint
Crown angle33.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6511419240
Dimensions5.36 × 5.32 × 3.19 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Top View
5.36 mm5.32 mm0.55 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6511419240
Side View
Table 59.0%Crown 33.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 59.8%

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 4
Current: $2,130 AUD|Low: $1,353 AUD|High: $3,598 AUD|Avg: $2,344 AUD|+3.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 8$1,543 AUD
Retailer 10$1,624 AUD
Retailer 3$1,686 AUD
Retailer 12$1,827 AUD
Retailer 9$1,928 AUD
Retailer 1$2,130 AUD
Retailer 4$2,200 AUD
Retailer 5$2,506 AUD
Retailer 11$2,533 AUD
Retailer 6$2,996 AUD
Retailer 2$3,167 AUD
Retailer 7$3,546 AUD

45 data points across 12 retailers

22 retailers$1,543 AUD to $3,546 AUD

B+
Cheapest Retailer
-
$1,543 AUD
B+
Retailer 2
-
$1,624 AUD
View
Final sale: no returns
B+
Retailer 3
-
$1,678 AUD
View
B+
Retailer 4
-
$1,686 AUD
View
B+
Retailer 5
-
$1,758 AUD
View
Retailer 6
-
$1,758 AUD
View
Price last confirmed 8 days ago
B+
Retailer 7
-
$1,827 AUD
View
B
Retailer 8
-
$1,928 AUD
View
B
Retailer 9
-
$2,030 AUD
View
B
Retailer 10
-
$2,100 AUD
View
B
Retailer 11
-
$2,100 AUD
View
B
Retailer 12
-
$2,130 AUD
View
B
Retailer 13
-
$2,171 AUD
View
B
Retailer 14
-
$2,200 AUD
View
B
Retailer 15
-
$2,441 AUD
View
B
Retailer 16
-
$2,506 AUD
View
Retailer 17
-
$2,533 AUD
View
Price last confirmed 32 days ago
B
Retailer 18
-
$2,996 AUD
View
B
Retailer 19
-
$3,167 AUD
View
B
Retailer 20
-
$3,406 AUD
View
B
Retailer 21
-
$3,546 AUD
View
Most Expensive
NZ Jewellers
fc518b71-e872-449c-a74e-39cfca248c75 · Nov 4
$4,735 AUD
$3,315 USD
View
Price under review
21 more retailers have this diamond
Prices start from $1,543 AUDSave up to $2,003 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+
0.55ct Round
$1,543 AUD