Round|Natural|GIA

0.55ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 2454893009

Certificate GIA 2454893009

Diamond specifications and retailer prices

From $575 USD
₹54,805 INR
As of October 31, 2026
Save $1,520 USD (73%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $2,424 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 2454893009. Listed at 23 retailers as of October 31, 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
Color
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: Oct 31
Current: $1,416 USD|Low: $493 USD|High: $1,433 USD|Avg: $952 USD|-1.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 1, 2026
Retailer 5$575 USD
Retailer 11$713 USD
Retailer 8$773 USD
Retailer 2$775 USD
Retailer 9$914 USD
Retailer 4$917 USD
Retailer 10$945 USD
Retailer 6$1,004 USD
Retailer 3$1,163 USD
Retailer 7$1,190 USD
Retailer 1$1,416 USD

36 data points across 11 retailers

23 retailers$575 USD to $2,096 USD

A
Cheapest Retailer
-
$575 USD
₹54,805 INR
Retailer 2
-
$690 USD
View
Price last confirmed 21 days ago
B+
Retailer 3
-
$713 USD
View
Final sale: no returns
B+
Retailer 4
-
$722 USD
A$1,111 AUD
View
Retailer 5
-
$773 USD
View
Price last confirmed 47 days ago
B+
Retailer 6
-
$773 USD
View
Retailer 7
-
$773 USD
View
Price last confirmed 16 days ago
Retailer 8
-
$775 USD
View
Price last confirmed 11 days ago
B+
Retailer 9
-
$785 USD
View
Retailer 10
-
$803 USD
View
Price last confirmed 17 days ago
B+
Retailer 11
-
$803 USD
View
B+
Retailer 12
-
$859 USD
View
Retailer 13
-
$892 USD
View
Price last confirmed 48 days ago
B+
Retailer 14
-
$906 USD
View
B+
Retailer 15
-
$914 USD
£720 GBP
View
B+
Retailer 16
-
$917 USD
£722 GBP
View
B
Retailer 17
-
$945 USD
View
B+
Retailer 18
-
$1,004 USD
€956 EUR
View
Retailer 19
-
$1,163 USD
A$1,788 AUD
View
Price last confirmed 28 days ago
B
Retailer 20
-
$1,190 USD
ZAR 19,231 ZAR
View
B
Retailer 21
-
$1,416 USD
£1,115 GBP
View
B
Retailer 22
-
$2,096 USD
£1,650 GBP
View
Most Expensive
NZ Jewellers
9f00f750-bed9-4676-a1ce-8fb98a8617b8 · Sep 15
$2,424 USD
View
Price last confirmed 47 days ago
22 more retailers have this diamond
Prices start from $575 USDSave up to $1,520 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
$575 USD