Round|Natural|GIA

0.55ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 3555670529

Certificate GIA 3555670529

Diamond specifications and retailer prices

From $512 USD
As of November 2, 2026
Save $1,596 USD (76%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $2,294 USD at NZ Jewellers · As of October 17, 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 3555670529. Listed at 20 retailers as of November 2, 2026, with a 312% 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
I
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 3555670529
Dimensions5.19 × 5.23 × 3.24 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Twinning Wisp, Cloud
Top View
5.19 mm5.23 mm0.55 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 3555670529
Side View
Table 59.0%Crown 36°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.1%

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: Nov 2
Current: $873 USD|Low: $465 USD|High: $1,356 USD|Avg: $937 USD|+5.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 3, 2026
Retailer 7$512 USD
Retailer 9$820 USD
Retailer 6$845 USD
Retailer 1$873 USD
Retailer 3$946 USD
Retailer 2$947 USD
Retailer 8$1,100 USD
Retailer 5$1,129 USD
Retailer 4$1,340 USD

43 data points across 9 retailers

20 retailers$512 USD to $2,108 USD

A
Cheapest Retailer
-
$512 USD
Final sale: no returns
Retailer 2
-
$650 USD
View
Price last confirmed 13 days ago
Retailer 3
-
$663 USD
View
Price last confirmed 18 days ago
Retailer 4
-
$663 USD
View
Price last confirmed 63 days ago
A
Retailer 5
-
$679 USD
View
A
Retailer 6
-
$688 USD
View
Retailer 7
-
$765 USD
View
Price last confirmed 41 days ago
B+
Retailer 8
-
$772 USD
View
B+
Retailer 9
-
$813 USD
View
B+
Retailer 10
-
$845 USD
View
B+
Retailer 11
-
$873 USD
£688 GBP
View
B+
Retailer 12
-
$878 USD
View
B+
Retailer 13
-
$930 USD
View
B+
Retailer 14
-
$946 USD
€901 EUR
View
B+
Retailer 15
-
$947 USD
£745 GBP
View
Retailer 16
-
$1,100 USD
A$1,692 AUD
View
Price last confirmed 30 days ago
B+
Retailer 17
-
$1,129 USD
ZAR 18,242 ZAR
View
B
Retailer 18
-
$1,340 USD
£1,055 GBP
View
B
Retailer 19
-
$2,108 USD
CA$2,927 CAD
View
Most Expensive
NZ Jewellers
67698757-780f-404d-855a-2be4db3f102c · Oct 17
$2,294 USD
View
Price last confirmed 16 days ago
19 more retailers have this diamond
Prices start from $512 USDSave up to $1,596 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
$512 USD