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Round|Natural|GIA

1.51ct K I1 Round Natural Diamond

EX • K/I1 • GIA 1515161633

Certificate GIA 1515161633

Diamond specifications and retailer prices

From $3,020 USD
As of November 6, 2026
Save $4,060 USD (57%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $7,080 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 1515161633. Listed at 8 retailers as of November 5, 2026, with prices from $3,020 to $7,080, a $4,060 spread on the same certified stone. NZ Jewellers lists it at $7,080. 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 angle35.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 1515161633
Dimensions7.27 × 7.31 × 4.56 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Culet sizeNone
Key to symbols
Twinning Wisp, Feather, Crystal, Needle
Top View
7.27 mm7.31 mm1.51 ctK / I1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1515161633
Side View
Table 58.0%Crown 35.5°Girdle: Slightly ThickPavilion 41.2°Culet: NoneDepth 62.6%

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 6
Current: $7,080 USD|Low: $2,085 USD|High: $7,080 USD|Avg: $4,024 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 5$2,085 USD
Retailer 4$2,212 USD
Retailer 6$3,020 USD
Retailer 7$3,268 USD
Retailer 9$3,682 USD
Retailer 11$3,682 USD
Retailer 8$3,823 USD
Retailer 3$3,887 USD
Retailer 10$4,248 USD
Retailer 2$4,563 USD
Retailer 12$4,835 USD
Retailer 13$5,754 USD
NZ Jewellers$7,080 USD

20 data points across 13 retailers

8 retailers$3,020 USD to $7,080 USD

B+
Cheapest Retailer
-
$3,020 USD
B+
Retailer 2
-
$3,268 USD
View
B+
Retailer 3
-
$3,682 USD
View
Retailer 4
-
$3,682 USD
View
Price last confirmed 8 days ago
B+
Retailer 5
-
$3,823 USD
View
B
Retailer 6
-
$4,248 USD
View
B
Retailer 7
-
$4,563 USD
View
Most Expensive
C
NZ Jewellers
31a47f8d-1050-4502-8e5a-31aca8388e9a · Nov 5
$7,080 USD
View
7 more retailers have this diamond
Prices start from $3,020 USDSave up to $4,060 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+
1.51ct Round
$3,020 USD