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Round|Natural|GIA

0.55ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 2454893009

Certificate GIA 2454893009

Diamond specifications and retailer prices

From $821 AUD
₹54,775 INR
As of November 2, 2026
Save $2,170 AUD (73%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: $3,459 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 2454893009. Listed at 24 retailers as of November 2, 2026, with a 264% 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 angle35.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 2454893009
Dimensions5.21 × 5.17 × 3.26 mm
L/W Ratio1.01
Star length50%
Top View
5.21 mm5.17 mm0.55 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2454893009
Side View
Table 58.0%Crown 35.5°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 62.8%

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 2
Current: $821 AUD|Low: $819 AUD|High: $2,044 AUD|Avg: $1,358 AUD|-1.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 1$821 AUD
Retailer 11$1,017 AUD
Retailer 8$1,103 AUD
Retailer 2$1,106 AUD
Retailer 9$1,305 AUD
Retailer 4$1,319 AUD
Retailer 10$1,348 AUD
Retailer 5$1,426 AUD
Retailer 3$1,659 AUD
Retailer 7$1,699 AUD
Retailer 6$2,021 AUD

36 data points across 11 retailers

24 retailers$821 AUD to $2,990 AUD

A
Cheapest Retailer
-
$821 AUD
₹54,775 INR
Retailer 2
-
$985 AUD
$690 USD
View
Price last confirmed 22 days ago
B+
Retailer 3
-
$1,017 AUD
$713 USD
View
Final sale: no returns
B+
Retailer 4
-
$1,031 AUD
View
Retailer 5
-
$1,103 AUD
$773 USD
View
Price last confirmed 48 days ago
B+
Retailer 6
-
$1,103 AUD
$773 USD
View
Retailer 7
-
$1,103 AUD
$773 USD
View
Price last confirmed 17 days ago
B+
Retailer 8
-
$1,106 AUD
$775 USD
View
B+
Retailer 9
-
$1,120 AUD
$785 USD
View
B+
Retailer 10
-
$1,146 AUD
$803 USD
View
Retailer 11
-
$1,146 AUD
$803 USD
View
Price last confirmed 18 days ago
B+
Retailer 12
-
$1,146 AUD
$803 USD
View
B+
Retailer 13
-
$1,226 AUD
$859 USD
View
Retailer 14
-
$1,273 AUD
$892 USD
View
Price last confirmed 49 days ago
B+
Retailer 15
-
$1,292 AUD
$906 USD
View
B+
Retailer 16
-
$1,305 AUD
£720 GBP
View
B+
Retailer 17
-
$1,319 AUD
£728 GBP
View
B
Retailer 18
-
$1,348 AUD
$945 USD
View
B+
Retailer 19
-
$1,426 AUD
€952 EUR
View
Retailer 20
-
$1,659 AUD
View
Price last confirmed 29 days ago
Retailer 21
-
$1,699 AUD
ZAR 19,231 ZAR
View
Price last confirmed 7 days ago
B
Retailer 22
-
$2,021 AUD
£1,115 GBP
View
B
Retailer 23
-
$2,990 AUD
£1,650 GBP
View
Most Expensive
NZ Jewellers
9f00f750-bed9-4676-a1ce-8fb98a8617b8 · Sep 15
$3,459 AUD
$2,424 USD
View
Price last confirmed 48 days ago
23 more retailers have this diamond
Prices start from $821 AUDSave up to $2,170 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
$821 AUD