Round|Natural|GIA

0.55ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 1423275719

Certificate GIA 1423275719

Diamond specifications and retailer prices

From $538 USD
HK$4,200 HKD
As of November 1, 2026
Save $1,451 USD (73%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $1,989 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 1423275719. Listed at 16 retailers as of October 30, 2026, with prices from $538 to $1,989, a $1,451 spread on the same certified stone. NZ Jewellers lists it at $1,989. 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
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1423275719
Dimensions5.28 × 5.26 × 3.27 mm
L/W Ratio1.00
Key to symbols
Cloud
Top View
5.28 mm5.26 mm0.55 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1423275719
Side View
Table 56.0%CrownGirdle: THN-MEDPavilionCulet: NoneDepth 62.0%

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 1
Current: $1,989 USD|Low: $396 USD|High: $1,989 USD|Avg: $798 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
Retailer 14
Retailer 15
Retailer 16
November 1, 2026
Retailer 8$396 USD
Retailer 6$538 USD
Retailer 4$566 USD
Retailer 5$570 USD
Retailer 14$683 USD
Retailer 15$683 USD
Retailer 13$732 USD
Retailer 16$762 USD
Retailer 7$766 USD
Retailer 10$777 USD
Retailer 3$820 USD
Retailer 9$821 USD
Retailer 2$929 USD
Retailer 11$979 USD
Retailer 12$1,473 USD
NZ Jewellers$1,989 USD

29 data points across 16 retailers

16 retailers$538 USD to $1,989 USD

A
Cheapest Retailer
-
$538 USD
HK$4,200 HKD
A
Retailer 2
-
$570 USD
View
A
Retailer 3
-
$659 USD
SGD 891 SGD
View
A
Retailer 4
-
$683 USD
View
A
Retailer 5
-
$683 USD
View
B+
Retailer 6
-
$732 USD
View
B+
Retailer 7
-
$762 USD
View
B+
Retailer 8
-
$766 USD
View
B+
Retailer 9
-
$777 USD
£612 GBP
View
B+
Retailer 10
-
$820 USD
View
B+
Retailer 11
-
$821 USD
£646 GBP
View
B+
Retailer 12
-
$929 USD
€885 EUR
View
B+
Retailer 13
-
$979 USD
ZAR 15,816 ZAR
View
B
Retailer 14
-
$1,450 USD
£1,142 GBP
View
B
Retailer 15
-
$1,473 USD
£1,160 GBP
View
Most Expensive
B
NZ Jewellers
725b144b-b05e-461e-a528-5d31c3d4a3fb · Oct 30
$1,989 USD
View
15 more retailers have this diamond
Prices start from $538 USDSave up to $1,451 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
$538 USD