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Round|Natural|GIA

1.51ct K I1 Round Natural Diamond

EX • K/I1 • GIA 6422460858

Certificate GIA 6422460858

Diamond specifications and retailer prices

From $2,931 USD
As of November 6, 2026
Save $3,919 USD (57%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $6,850 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 6422460858. Listed at 8 retailers as of November 5, 2026, with prices from $2,931 to $6,850, a $3,919 spread on the same certified stone. NZ Jewellers lists it at $6,850. 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
FluorescenceStrong
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6422460858
Dimensions7.33 × 7.30 × 4.57 mm
L/W Ratio1.00
Top View
7.33 mm7.30 mm1.51 ctK / I1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 6422460858
Side View
Table 57.0%Crown 36°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.5%

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: $6,850 USD|Low: $2,905 USD|High: $6,850 USD|Avg: $4,047 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
November 5, 2026
Retailer 7$2,931 USD
Retailer 6$3,065 USD
Retailer 3$3,162 USD
Retailer 12$3,199 USD
Retailer 9$3,562 USD
Retailer 11$3,562 USD
Retailer 8$3,699 USD
Retailer 5$3,755 USD
Retailer 10$4,110 USD
Retailer 2$4,415 USD
Retailer 13$4,678 USD
Retailer 4$5,560 USD
NZ Jewellers$6,850 USD

24 data points across 13 retailers

8 retailers$2,931 USD to $6,850 USD

B+
Cheapest Retailer
-
$2,931 USD
A
Retailer 2
-
$3,065 USD
View
Retailer 3
-
$3,562 USD
View
Price last confirmed 8 days ago
B+
Retailer 4
-
$3,562 USD
View
B+
Retailer 5
-
$3,699 USD
View
B
Retailer 6
-
$4,110 USD
View
B
Retailer 7
-
$4,415 USD
View
Most Expensive
C
NZ Jewellers
56c14851-5019-4e7f-a5c6-c9a71134b5aa · Nov 5
$6,850 USD
View
7 more retailers have this diamond
Prices start from $2,931 USDSave up to $3,919 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
$2,931 USD