Round|Natural|GIA

0.50ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 1555704351

Certificate GIA 1555704351

Diamond specifications and retailer prices

From $372 USD
As of November 6, 2026
Save $1,245 USD (77%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: $1,693 USD at NZ Jewellers · As of September 5, 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 1555704351. Listed at 24 retailers as of November 4, 2026, with a 335% 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
SymmetryVery Good
FluorescenceNone
Crown angle34.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 1555704351
Dimensions5.09 × 5.12 × 3.14 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Top View
5.09 mm5.12 mm0.50 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1555704351
Side View
Table 57.0%Crown 34.5°Girdle: THN-STKPavilion 41°Culet: NoneDepth 61.6%

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: $1,617 USD|Low: $372 USD|High: $1,617 USD|Avg: $697 USD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
November 6, 2026
Retailer 13$372 USD
Retailer 9$435 USD
Retailer 8$466 USD
Retailer 5$475 USD
Retailer 12$475 USD
Retailer 10$516 USD
Retailer 14$523 USD
Retailer 17$533 USD
Retailer 4$552 USD
Retailer 11$555 USD
Retailer 3$584 USD
Retailer 18$630 USD
Retailer 21$647 USD
Retailer 15$651 USD
Retailer 19$686 USD
Retailer 2$700 USD
Retailer 7$700 USD
Retailer 16$716 USD
Retailer 6$1,191 USD
Retailer 20$1,444 USD
NZ Jewellers$1,617 USD

21 data points across 21 retailers

24 retailers$372 USD to $1,617 USD

A
Cheapest Retailer
-
$372 USD
A
Retailer 2
-
$435 USD
View
A
Retailer 3
-
$466 USD
View
A
Retailer 4
-
$475 USD
View
A
Retailer 5
-
$475 USD
View
Final sale: no returns
A
Retailer 6
-
$516 USD
View
Retailer 7
-
$523 USD
View
Price last confirmed 19 days ago
A
Retailer 8
-
$533 USD
View
Retailer 9
-
$540 USD
View
Price last confirmed 62 days ago
A
Retailer 10
-
$552 USD
View
A
Retailer 11
-
$555 USD
View
A
Retailer 12
-
$584 USD
View
Retailer 13
-
$617 USD
View
Price last confirmed 58 days ago
A
Retailer 14
-
$630 USD
View
A
Retailer 15
-
$647 USD
View
A
Retailer 16
-
$651 USD
View
B+
Retailer 17
-
$686 USD
View
B+
Retailer 18
-
$700 USD
View
B+
Retailer 19
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$700 USD
View
B+
Retailer 20
-
$716 USD
View
B
Retailer 21
-
$1,191 USD
View
B
Retailer 22
-
$1,444 USD
View
B
Retailer 23
-
$1,617 USD
View
Most Expensive
NZ Jewellers
0fbbc272-3477-4896-9d45-b4c12400f3fe · Sep 5
$1,693 USD
View
Price last confirmed 61 days ago
23 more retailers have this diamond
Prices start from $372 USDSave up to $1,245 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
$372 USD