Round|Natural|GIA

0.51ct K I1 Round Natural Diamond

GD • K/I1 • GIA 3245397346

Certificate GIA 3245397346

Diamond specifications and retailer prices

From $429 USD
As of November 5, 2026
Save $1,384 USD (76%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $1,813 USD at NZ Jewellers · As of November 4, 2026
View at NZ Jewellers

About this 0.51ct natural round diamond

This 0.51ct natural round sits in the half to three-quarter carat band, graded K colour (faint-tinted) and I1 clarity (included), with a standard cut grade and certified by GIA 3245397346. Listed at 6 retailers as of November 4, 2026, with prices from $429 to $1,813, a $1,384 spread on the same certified stone. NZ Jewellers lists it at $1,813. 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

0.51
Carat
K
Color
I1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle38°
Pavilion angle40.4°
OriginNatural
Grading LabGIA
CertificateGIA 3245397346
Dimensions4.91 × 4.93 × 3.23 mm
L/W Ratio1.00
Star length50%
Lower girdle85%
Top View
4.91 mm4.93 mm0.51 ctK / I1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 3245397346
Side View
Table 57.0%Crown 38°Girdle: THK-VTKPavilion 40.4°Culet: NoneDepth 65.7%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $1,813 USD|Low: $429 USD|High: $1,813 USD|Avg: $697 USD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 5, 2026
Retailer 5$429 USD
Retailer 3$462 USD
Retailer 7$462 USD
Retailer 6$495 USD
Retailer 4$523 USD
Retailer 8$608 USD
Retailer 2$708 USD
Retailer 9$711 USD
NZ Jewellers$1,813 USD

22 data points across 9 retailers

6 retailers$429 USD to $1,813 USD

B+
Cheapest Retailer
-
$429 USD
Retailer 2
-
$462 USD
View
Price last confirmed 8 days ago
B
Retailer 3
-
$462 USD
View
B
Retailer 4
-
$495 USD
View
B
Retailer 5
-
$708 USD
View
Most Expensive
C
NZ Jewellers
702d8868-f5f1-4f1a-8092-4103ee61c4f8 · Nov 4
$1,813 USD
View
5 more retailers have this diamond
Prices start from $429 USDSave up to $1,384 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.

B+
0.51ct Round
$429 USD