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Round|Natural|GIA

0.51ct K I1 Round Natural Diamond

GD • K/I1 • GIA 2327890331

Certificate GIA 2327890331

Diamond specifications and retailer prices

From $417 USD
As of November 5, 2026
Save $1,349 USD (76%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $1,766 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 2327890331. Listed at 6 retailers as of November 4, 2026, with prices from $417 to $1,766, a $1,349 spread on the same certified stone. NZ Jewellers lists it at $1,766. 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
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle38.5°
Pavilion angle40°
OriginNatural
Grading LabGIA
CertificateGIA 2327890331
Dimensions4.89 × 4.91 × 3.20 mm
L/W Ratio1.00
Star length55%
Lower girdle80%
Top View
4.89 mm4.91 mm0.51 ctK / I1
OriginNatural
CutGood
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 2327890331
Side View
Table 57.0%Crown 38.5°Girdle: Very ThickPavilion 40°Culet: Very SmallDepth 65.4%

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: $1,766 USD|Low: $417 USD|High: $1,766 USD|Avg: $681 USD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 5, 2026
Retailer 5$417 USD
Retailer 3$450 USD
Retailer 7$450 USD
Retailer 6$482 USD
Retailer 4$508 USD
Retailer 8$598 USD
Retailer 2$690 USD
Retailer 9$692 USD
NZ Jewellers$1,766 USD

15 data points across 9 retailers

6 retailers$417 USD to $1,766 USD

B+
Cheapest Retailer
-
$417 USD
Retailer 2
-
$450 USD
View
Price last confirmed 8 days ago
B+
Retailer 3
-
$450 USD
View
B
Retailer 4
-
$482 USD
View
B
Retailer 5
-
$690 USD
View
Most Expensive
C
NZ Jewellers
88dce006-d645-47b1-a61d-3f3dd913d9bf · Nov 4
$1,766 USD
View
5 more retailers have this diamond
Prices start from $417 USDSave up to $1,349 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
$417 USD