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Round|Natural|GIA

0.55ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 3555670529

Certificate GIA 3555670529

Diamond specifications and retailer prices

From $745 AUD
As of November 6, 2026
Save $2,321 AUD (76%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $3,339 AUD at NZ Jewellers · As of October 17, 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 3555670529. Listed at 20 retailers as of November 5, 2026, with a 312% 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
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 3555670529
Dimensions5.19 × 5.23 × 3.24 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Twinning Wisp, Cloud
Top View
5.19 mm5.23 mm0.55 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 3555670529
Side View
Table 59.0%Crown 36°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.1%

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: $1,370 AUD|Low: $745 AUD|High: $1,974 AUD|Avg: $1,391 AUD|-0.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 7$745 AUD
Retailer 9$1,193 AUD
Retailer 6$1,230 AUD
Retailer 3$1,257 AUD
Retailer 2$1,368 AUD
Retailer 1$1,370 AUD
Retailer 8$1,601 AUD
Retailer 4$1,643 AUD
Retailer 5$1,949 AUD

44 data points across 9 retailers

20 retailers$745 AUD to $3,067 AUD

A
Cheapest Retailer
-
$745 AUD
Final sale: no returns
Retailer 2
-
$946 AUD
View
Price last confirmed 17 days ago
Retailer 3
-
$965 AUD
View
Price last confirmed 21 days ago
Retailer 4
-
$965 AUD
View
Price last confirmed 67 days ago
A
Retailer 5
-
$988 AUD
View
A
Retailer 6
-
$1,001 AUD
View
Retailer 7
-
$1,113 AUD
View
Price last confirmed 45 days ago
B+
Retailer 8
-
$1,122 AUD
View
B+
Retailer 9
-
$1,183 AUD
View
B+
Retailer 10
-
$1,230 AUD
View
B+
Retailer 11
-
$1,257 AUD
View
B+
Retailer 12
-
$1,278 AUD
View
B+
Retailer 13
-
$1,354 AUD
View
B+
Retailer 14
-
$1,368 AUD
View
B+
Retailer 15
-
$1,370 AUD
View
Retailer 16
-
$1,601 AUD
View
Price last confirmed 33 days ago
B
Retailer 17
-
$1,643 AUD
View
B
Retailer 18
-
$1,949 AUD
View
B
Retailer 19
-
$3,067 AUD
View
Most Expensive
NZ Jewellers
67698757-780f-404d-855a-2be4db3f102c · Oct 17
$3,339 AUD
$2,294 USD
View
Price last confirmed 20 days ago
19 more retailers have this diamond
Prices start from $745 AUDSave up to $2,321 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
$745 AUD