Round|Natural|GIA

0.45ct K SI1 Round Natural Diamond

VG • K/SI1 • GIA 6381753831

Certificate GIA 6381753831

Diamond specifications and retailer prices

From $314 USD
As of November 4, 2026
Save $1,013 USD (76%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $1,327 USD at NZ Jewellers · As of November 4, 2026
View at NZ Jewellers

About this 0.45ct natural round diamond

This 0.45ct natural round sits in the sub-half-carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a very-good cut grade and certified by GIA 6381753831. Listed at 15 retailers as of November 4, 2026, with prices from $314 to $1,327, a $1,013 spread on the same certified stone. NZ Jewellers lists it at $1,327. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.45
Carat
K
Color
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle38.5°
Pavilion angle39.8°
OriginNatural
Grading LabGIA
CertificateGIA 6381753831
Dimensions4.80 × 4.77 × 3.09 mm
L/W Ratio1.01
Top View
4.80 mm4.77 mm0.45 ctK / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 6381753831
Side View
Table 55.0%Crown 38.5°Girdle: STK-THKPavilion 39.8°Culet: NoneDepth 64.6%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $1,327 USD|Low: $314 USD|High: $1,327 USD|Avg: $501 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
November 5, 2026
Retailer 5$314 USD
Retailer 11$315 USD
Retailer 16$338 USD
Retailer 14$350 USD
Retailer 8$380 USD
Retailer 15$402 USD
Retailer 7$405 USD
Retailer 6$422 USD
Retailer 4$435 USD
Retailer 3$476 USD
Retailer 9$514 USD
Retailer 13$535 USD
Retailer 10$539 USD
Retailer 2$636 USD
Retailer 12$798 USD
NZ Jewellers$1,327 USD

33 data points across 16 retailers

15 retailers$314 USD to $1,327 USD

A
Cheapest Retailer
-
$314 USD
A
Retailer 2
-
$315 USD
View
Retailer 3
-
$338 USD
View
Price last confirmed 8 days ago
B+
Retailer 4
-
$350 USD
View
B+
Retailer 5
-
$402 USD
View
B+
Retailer 6
-
$405 USD
View
B+
Retailer 7
-
$422 USD
View
B+
Retailer 8
-
$435 USD
View
B+
Retailer 9
-
$476 USD
View
B+
Retailer 10
-
$514 USD
View
B
Retailer 11
-
$535 USD
View
B+
Retailer 12
-
$539 USD
View
B
Retailer 13
-
$636 USD
View
B
Retailer 14
-
$798 USD
View
Most Expensive
C
NZ Jewellers
4b62d1b1-7972-4fc0-8517-acb5d204728c · Nov 4
$1,327 USD
View
14 more retailers have this diamond
Prices start from $314 USDSave up to $1,013 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
0.45ct Round
$314 USD