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Round|Natural|GIA

0.55ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 2225190395

Certificate GIA 2225190395

Diamond specifications and retailer prices

From $806 AUD
$566 USD
As of October 26, 2026
Save $1,467 AUD (65%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $2,733 AUD at NZ Jewellers · As of September 15, 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2225190395. Listed at 20 retailers as of October 26, 2026, with a 182% 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
H
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 2225190395
Dimensions5.23 × 5.19 × 3.22 mm
L/W Ratio1.01
Key to symbols
Crystal, Cloud, Needle, Feather
Top View
5.23 mm5.19 mm0.55 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2225190395
Side View
Table 58.0%Crown 36°Girdle: Slightly ThickPavilion 40.6°Culet: NoneDepth 62.1%

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: Oct 26
Current: $1,149 AUD|Low: $735 AUD|High: $2,076 AUD|Avg: $1,125 AUD|+0.9%
Retailer 1
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 2, 2026
Retailer 12$806 AUD
Retailer 16$819 AUD
Retailer 6$904 AUD
Retailer 15$905 AUD
Retailer 2$957 AUD
Retailer 14$957 AUD
Retailer 13$1,067 AUD
Retailer 5$1,076 AUD
Retailer 3$1,082 AUD
Retailer 9$1,087 AUD
Retailer 1$1,149 AUD
Retailer 4$1,153 AUD
Retailer 7$1,208 AUD
Retailer 8$1,308 AUD
Retailer 10$1,371 AUD
Retailer 11$2,061 AUD

36 data points across 16 retailers

20 retailers$806 AUD to $2,273 AUD

A
Cheapest Retailer
-
$806 AUD
$566 USD
A
Retailer 2
-
$819 AUD
$575 USD
View
Final sale: no returns
Retailer 3
-
$871 AUD
$612 USD
View
Price last confirmed 48 days ago
A
Retailer 4
-
$904 AUD
$635 USD
View
A
Retailer 5
-
$905 AUD
SGD 859 SGD
View
Retailer 6
-
$957 AUD
$672 USD
View
Price last confirmed 8 days ago
A
Retailer 7
-
$957 AUD
$672 USD
View
Retailer 8
-
$1,005 AUD
$706 USD
View
Price last confirmed 49 days ago
A
Retailer 9
-
$1,067 AUD
£590 GBP
View
B+
Retailer 10
-
$1,076 AUD
$756 USD
View
B+
Retailer 11
-
$1,082 AUD
$760 USD
View
B+
Retailer 12
-
$1,087 AUD
£601 GBP
View
B+
Retailer 13
-
$1,149 AUD
£636 GBP
View
B+
Retailer 14
-
$1,153 AUD
$810 USD
View
B+
Retailer 15
-
$1,208 AUD
$849 USD
View
Retailer 16
-
$1,308 AUD
View
Price last confirmed 28 days ago
B+
Retailer 17
-
$1,371 AUD
ZAR 15,555 ZAR
View
B
Retailer 18
-
$2,061 AUD
£1,140 GBP
View
B
Retailer 19
-
$2,273 AUD
£1,257 GBP
View
Most Expensive
NZ Jewellers
03ddd43e-3800-4c6a-a3d6-3159a1065b64 · Sep 15
$2,733 AUD
$1,920 USD
View
Price last confirmed 48 days ago
19 more retailers have this diamond
Prices start from $806 AUDSave up to $1,467 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
$806 AUD