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Radiant|Natural|GIA

1.51ct K SI2 Radiant Natural Diamond

VG • K/SI2 • GIA 6485980459

Certificate GIA 6485980459

Diamond specifications and retailer prices

From $4,479 NZD
As of November 4, 2026
Save $5,695 NZD (56%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $10,174 NZD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.51ct natural radiant diamond

This 1.51ct natural radiant sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6485980459. Listed at 23 retailers as of November 4, 2026, with prices from $4,479 to $10,174, a $5,695 spread on the same certified stone. NZ Jewellers lists it at $10,174. 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

1.51
Carat
K
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle47.9°
Pavilion angle55.6°
OriginNatural
Grading LabGIA
CertificateGIA 6485980459
Dimensions7.72 × 5.65 × 3.93 mm
L/W Ratio1.37
Top View
7.72 mm5.65 mm1.51 ctK / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6485980459
Side View
Table 67.0%Crown 47.9°Girdle: Very ThickPavilion 55.6°Culet: NoneDepth 69.5%

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 4
Current: $10,174 NZD|Low: $3,830 NZD|High: $10,174 NZD|Avg: $6,113 NZD
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 7, 2026
Retailer 4$4,501 NZD
Retailer 10$4,595 NZD
Retailer 9$5,291 NZD
Retailer 13$5,291 NZD
Retailer 3$5,495 NZD
Retailer 5$5,713 NZD
Retailer 11$5,745 NZD
Retailer 6$5,819 NZD
Retailer 2$6,043 NZD
Retailer 12$6,104 NZD
Retailer 7$6,409 NZD
Retailer 8$9,741 NZD
NZ Jewellers$10,174 NZD

44 data points across 13 retailers

23 retailers$4,479 NZD to $10,174 NZD

A
Cheapest Retailer
-
$4,479 NZD
Retailer 2
-
$4,501 NZD
View
Price last confirmed 10 days ago
A
Retailer 3
-
$4,595 NZD
View
A
Retailer 4
-
$4,679 NZD
View
A
Retailer 5
-
$4,679 NZD
View
B+
Retailer 6
-
$4,739 NZD
View
B+
Retailer 7
-
$5,237 NZD
View
B+
Retailer 8
-
$5,291 NZD
View
Retailer 9
-
$5,291 NZD
View
Price last confirmed 9 days ago
B+
Retailer 10
-
$5,340 NZD
View
Retailer 11
-
$5,379 NZD
View
Price last confirmed 15 days ago
B+
Retailer 12
-
$5,495 NZD
View
B+
Retailer 13
-
$5,713 NZD
View
B+
Retailer 14
-
$5,745 NZD
View
A
Retailer 15
-
$5,819 NZD
View
B+
Retailer 16
-
$5,841 NZD
View
B+
Retailer 17
-
$5,859 NZD
View
B+
Retailer 18
-
$6,043 NZD
View
B+
Retailer 19
-
$6,104 NZD
View
B+
Retailer 20
-
$6,409 NZD
View
B
Retailer 21
-
$8,424 NZD
View
B
Retailer 22
-
$9,741 NZD
View
Most Expensive
B
NZ Jewellers
292d320e-dd0d-4df5-86f7-f7fe54074af6 · Nov 5
$10,174 NZD
$5,640 USD
View
22 more retailers have this diamond
Prices start from $4,479 NZDSave up to $5,695 NZD

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 Radiant
$4,479 NZD