Round|Natural|GIA

0.55ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 2567143851

Certificate GIA 2567143851

Diamond specifications and retailer prices

From $452 USD
As of November 6, 2026
Save $857 USD (65%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $2,318 USD 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 2567143851. Listed at 15 retailers as of November 4, 2026, with a 190% 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
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 2567143851
Dimensions5.23 × 5.25 × 3.30 mm
L/W Ratio1.00
Culet sizeNone
Key to symbols
Twinning Wisp, Cloud, Crystal, Feather
Top View
5.23 mm5.25 mm0.55 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2567143851
Side View
Table 57.0%Crown 36°Girdle: MediumPavilion 41.2°Culet: NoneDepth 62.9%

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: $571 USD|Low: $452 USD|High: $1,346 USD|Avg: $883 USD
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 3$452 USD
Retailer 2$517 USD
Retailer 1$571 USD
Retailer 10$694 USD
Retailer 6$845 USD
Retailer 9$895 USD
Retailer 4$920 USD
Retailer 5$951 USD
Retailer 7$1,104 USD
Retailer 8$1,309 USD

27 data points across 10 retailers

15 retailers$452 USD to $1,309 USD

A
Cheapest Retailer
-
$452 USD
A
Retailer 2
-
$517 USD
View
Final sale: no returns
A
Retailer 3
-
$571 USD
View
A
Retailer 4
-
$694 USD
View
Retailer 5
-
$739 USD
View
Price last confirmed 53 days ago
Retailer 6
-
$767 USD
View
Price last confirmed 38 days ago
B+
Retailer 7
-
$845 USD
View
Retailer 8
-
$853 USD
View
Price last confirmed 53 days ago
B+
Retailer 9
-
$895 USD
View
B+
Retailer 10
-
$920 USD
View
B+
Retailer 11
-
$951 USD
View
B+
Retailer 12
-
$1,104 USD
View
Retailer 13
-
$1,111 USD
View
Price last confirmed 33 days ago
B
Retailer 14
-
$1,309 USD
View
Most Expensive
NZ Jewellers
c453bd50-51f0-465c-9d50-67a4b18e2b86 · Sep 15
$2,318 USD
View
Price last confirmed 52 days ago
14 more retailers have this diamond
Prices start from $452 USDSave up to $857 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
$452 USD