Round|Natural|GIA

0.50ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 6551506419

Certificate GIA 6551506419

Diamond specifications and retailer prices

From $635 USD
As of November 4, 2026
Save $765 USD (55%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $2,402 USD at NZ Jewellers · As of November 4, 2026
View at NZ Jewellers

About this 0.5ct natural round diamond

This 0.5ct 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 6551506419. Listed at 21 retailers as of November 4, 2026, with a 120% 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

0.50
Carat
I
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6551506419
Dimensions5.02 × 5.06 × 3.11 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Feather
Top View
5.02 mm5.06 mm0.50 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6551506419
Side View
Table 61.0%Crown 35.5°Girdle: Slightly ThickPavilion 40.8°Culet: NoneDepth 61.7%

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 4
Current: $906 USD|Low: $488 USD|High: $1,419 USD|Avg: $953 USD|+4.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 8$640 USD
Retailer 10$721 USD
Retailer 2$762 USD
Retailer 7$875 USD
Retailer 1$906 USD
Retailer 3$971 USD
Retailer 4$985 USD
Retailer 9$1,151 USD
Retailer 5$1,182 USD
Retailer 6$1,400 USD

45 data points across 10 retailers

21 retailers$635 USD to $1,400 USD

A
Cheapest Retailer
-
$635 USD
B+
Retailer 2
-
$640 USD
View
Final sale: no returns
Retailer 3
-
$681 USD
View
Price last confirmed 26 days ago
Retailer 4
-
$694 USD
View
Price last confirmed 8 days ago
B+
Retailer 5
-
$694 USD
View
B+
Retailer 6
-
$704 USD
View
B+
Retailer 7
-
$721 USD
View
B+
Retailer 8
-
$762 USD
View
B+
Retailer 9
-
$801 USD
View
B
Retailer 10
-
$875 USD
View
B+
Retailer 11
-
$906 USD
View
B+
Retailer 12
-
$921 USD
View
B+
Retailer 13
-
$971 USD
View
B+
Retailer 14
-
$985 USD
View
B
Retailer 15
-
$1,069 USD
View
B
Retailer 16
-
$1,072 USD
View
Retailer 17
-
$1,151 USD
View
Price last confirmed 32 days ago
B
Retailer 18
-
$1,182 USD
View
B
Retailer 19
-
$1,400 USD
View
Retailer 20
-
$2,211 USD
View
Price under review
Most Expensive
NZ Jewellers
e0438737-15b9-4ae5-b609-315943596b88 · Nov 4
$2,402 USD
View
Price under review
20 more retailers have this diamond
Prices start from $635 USDSave up to $765 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
0.50ct Round
$635 USD