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0.55ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 2557450247

Certificate GIA 2557450247

Diamond specifications and retailer prices

From $526 USD
As of October 31, 2026
Save $1,828 USD (78%) vs most expensive(unlock to see where)
27 retailers carry this diamond
Most expensive: $2,354 USD at NZ Jewellers · As of October 30, 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 2557450247. Listed at 27 retailers as of October 30, 2026, with prices from $526 to $2,354, a $1,828 spread on the same certified stone. NZ Jewellers lists it at $2,354. 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
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 2557450247
Dimensions5.19 × 5.23 × 3.29 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Cloud
Top View
5.19 mm5.23 mm0.55 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2557450247
Side View
Table 56.0%Crown 36.5°Girdle: THN-MEDPavilion 41°Culet: NoneDepth 63.1%

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: Oct 31
Current: $2,354 USD|Low: $478 USD|High: $2,354 USD|Avg: $993 USD
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
November 2, 2026
Retailer 11$526 USD
Retailer 5$667 USD
Retailer 9$685 USD
Retailer 13$706 USD
Retailer 4$730 USD
Retailer 3$794 USD
Retailer 10$860 USD
Retailer 2$897 USD
Retailer 6$969 USD
Retailer 12$1,129 USD
Retailer 8$1,159 USD
Retailer 7$1,375 USD
NZ Jewellers$2,354 USD

44 data points across 13 retailers

27 retailers$526 USD to $2,354 USD

A
Cheapest Retailer
-
$526 USD
Final sale: no returns
Retailer 2
-
$667 USD
View
Price last confirmed 21 days ago
A
Retailer 3
-
$680 USD
View
Retailer 4
-
$680 USD
View
Price last confirmed 48 days ago
A
Retailer 5
-
$685 USD
View
A
Retailer 6
-
$696 USD
View
A
Retailer 7
-
$704 USD
A$1,083 AUD
View
A
Retailer 8
-
$706 USD
View
B+
Retailer 9
-
$730 USD
View
B+
Retailer 10
-
$785 USD
View
B+
Retailer 11
-
$789 USD
View
B+
Retailer 12
-
$794 USD
View
B+
Retailer 13
-
$835 USD
View
B+
Retailer 14
-
$860 USD
View
B+
Retailer 15
-
$860 USD
View
B+
Retailer 16
-
$860 USD
View
B+
Retailer 17
-
$890 USD
View
B+
Retailer 18
-
$897 USD
£706 GBP
View
B+
Retailer 19
-
$902 USD
View
B+
Retailer 20
-
$955 USD
View
B+
Retailer 21
-
$969 USD
€923 EUR
View
B+
Retailer 22
-
$1,050 USD
View
Retailer 23
-
$1,129 USD
A$1,737 AUD
View
Price last confirmed 29 days ago
B
Retailer 24
-
$1,159 USD
ZAR 18,719 ZAR
View
B
Retailer 25
-
$1,375 USD
£1,083 GBP
View
B
Retailer 26
-
$2,165 USD
CA$3,007 CAD
View
Most Expensive
B
NZ Jewellers
9b665b45-e3d4-40e8-97cd-0319aba1d27e · Oct 30
$2,354 USD
View
26 more retailers have this diamond
Prices start from $526 USDSave up to $1,828 USD

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
$526 USD