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Round|Natural|GIA

1.51ct K I1 Round Natural Diamond

EX • K/I1 • GIA 6415821107

Certificate GIA 6415821107

Diamond specifications and retailer prices

From $2,965 USD
As of November 5, 2026
Save $3,865 USD (57%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $6,830 USD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.51ct natural round diamond

This 1.51ct natural round sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and I1 clarity (included), with a top-tier cut grade and certified by GIA 6415821107. Listed at 8 retailers as of November 5, 2026, with prices from $2,965 to $6,830, a $3,865 spread on the same certified stone. NZ Jewellers lists it at $6,830. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
K
Color
I1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.5°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 6415821107
Dimensions7.37 × 7.39 × 4.57 mm
L/W Ratio1.00
Top View
7.37 mm7.39 mm1.51 ctK / I1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6415821107
Side View
Table 58.0%Crown 33.5°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 61.8%

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 5
Current: $6,830 USD|Low: $2,965 USD|High: $6,830 USD|Avg: $4,089 USD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 5, 2026
Retailer 3$2,965 USD
Retailer 7$3,450 USD
Retailer 9$3,659 USD
Retailer 4$3,920 USD
Retailer 5$3,920 USD
Retailer 6$3,920 USD
Retailer 2$4,401 USD
Retailer 8$4,523 USD
NZ Jewellers$6,830 USD

43 data points across 9 retailers

8 retailers$2,965 USD to $6,830 USD

A
Cheapest Retailer
-
$2,965 USD
B+
Retailer 2
-
$3,450 USD
View
Retailer 3
-
$3,920 USD
View
Price last confirmed 8 days ago
B+
Retailer 4
-
$3,920 USD
View
B+
Retailer 5
-
$3,920 USD
View
B
Retailer 6
-
$4,401 USD
View
B
Retailer 7
-
$4,523 USD
View
Most Expensive
C
NZ Jewellers
0ff528ff-8f04-46f5-aefe-607847c55df1 · Nov 5
$6,830 USD
View
7 more retailers have this diamond
Prices start from $2,965 USDSave up to $3,865 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
1.51ct Round
$2,965 USD