Round|Natural|GIA

0.55ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 6421533302

Certificate GIA 6421533302

Diamond specifications and retailer prices

From $535 USD
As of November 6, 2026
Save $1,286 USD (71%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $2,278 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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6421533302. Listed at 17 retailers as of November 6, 2026, with a 240% 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
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 6421533302
Dimensions5.22 × 5.18 × 3.26 mm
L/W Ratio1.01
Top View
5.22 mm5.18 mm0.55 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6421533302
Side View
Table 59.0%Crown 34.5°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 62.7%

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: $535 USD|Low: $462 USD|High: $1,346 USD|Avg: $843 USD|-2.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 1$535 USD
Retailer 7$670 USD
Retailer 5$715 USD
Retailer 3$858 USD
Retailer 4$882 USD
Retailer 2$939 USD
Retailer 6$1,330 USD

43 data points across 7 retailers

17 retailers$535 USD to $1,821 USD

A
Cheapest Retailer
-
$535 USD
A
Retailer 2
-
$648 USD
View
A
Retailer 3
-
$670 USD
View
Final sale: no returns
A
Retailer 4
-
$684 USD
View
B+
Retailer 5
-
$715 USD
View
Retailer 6
-
$727 USD
View
Price last confirmed 53 days ago
Retailer 7
-
$727 USD
View
Price last confirmed 21 days ago
Retailer 8
-
$754 USD
View
Price last confirmed 22 days ago
B+
Retailer 9
-
$819 USD
View
Retailer 10
-
$838 USD
View
Price last confirmed 53 days ago
B+
Retailer 11
-
$858 USD
View
B+
Retailer 12
-
$858 USD
View
B+
Retailer 13
-
$882 USD
View
B+
Retailer 14
-
$939 USD
View
B
Retailer 15
-
$1,330 USD
View
B
Retailer 16
-
$1,821 USD
View
Most Expensive
NZ Jewellers
44670bad-dd18-4c05-89e9-2ef39dd2ad25 · Sep 15
$2,278 USD
View
Price last confirmed 52 days ago
16 more retailers have this diamond
Prices start from $535 USDSave up to $1,286 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
$535 USD