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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 $2,483 USD
As of November 4, 2026
Save $3,157 USD (56%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $5,640 USD 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 $2,483 to $5,640, a $3,157 spread on the same certified stone. NZ Jewellers lists it at $5,640. 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
Color
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

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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: $5,640 USD|Low: $2,123 USD|High: $5,640 USD|Avg: $3,389 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 7, 2026
Retailer 4$2,495 USD
Retailer 10$2,547 USD
Retailer 9$2,933 USD
Retailer 13$2,933 USD
Retailer 3$3,046 USD
Retailer 5$3,167 USD
Retailer 11$3,185 USD
Retailer 6$3,226 USD
Retailer 2$3,350 USD
Retailer 12$3,384 USD
Retailer 7$3,553 USD
Retailer 8$5,400 USD
NZ Jewellers$5,640 USD

44 data points across 13 retailers

23 retailers$2,483 USD to $5,640 USD

A
Cheapest Retailer
-
$2,483 USD
Retailer 2
-
$2,495 USD
View
Price last confirmed 10 days ago
A
Retailer 3
-
$2,547 USD
View
A
Retailer 4
-
$2,594 USD
View
A
Retailer 5
-
$2,594 USD
View
B+
Retailer 6
-
$2,627 USD
View
B+
Retailer 7
-
$2,903 USD
View
B+
Retailer 8
-
$2,933 USD
View
Retailer 9
-
$2,933 USD
View
Price last confirmed 9 days ago
B+
Retailer 10
-
$2,960 USD
View
Retailer 11
-
$2,982 USD
View
Price last confirmed 15 days ago
B+
Retailer 12
-
$3,046 USD
View
B+
Retailer 13
-
$3,167 USD
View
B+
Retailer 14
-
$3,185 USD
View
A
Retailer 15
-
$3,226 USD
View
B+
Retailer 16
-
$3,238 USD
View
B+
Retailer 17
-
$3,248 USD
View
B+
Retailer 18
-
$3,350 USD
View
B+
Retailer 19
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$3,384 USD
View
B+
Retailer 20
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$3,553 USD
View
B
Retailer 21
-
$4,670 USD
View
B
Retailer 22
-
$5,400 USD
View
Most Expensive
B
NZ Jewellers
292d320e-dd0d-4df5-86f7-f7fe54074af6 · Nov 5
$5,640 USD
View
22 more retailers have this diamond
Prices start from $2,483 USDSave up to $3,157 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 Radiant
$2,483 USD