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Radiant|Natural|GIA

1.51ct K SI2 Radiant Natural Diamond

VG • K/SI2 • GIA 6505379824

Certificate GIA 6505379824

Diamond specifications and retailer prices

From €3,890 EUR
As of November 6, 2026
Save €4,512 EUR (54%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: €8,402 EUR 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 6505379824. Listed at 16 retailers as of November 5, 2026, with prices from €3,890 to €8,402, a €4,512 spread on the same certified stone. NZ Jewellers lists it at €8,402. 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 angle46°
Pavilion angle56.7°
OriginNatural
Grading LabGIA
CertificateGIA 6505379824
Dimensions8.21 × 5.73 × 3.89 mm
L/W Ratio1.43
Top View
8.21 mm5.73 mm1.51 ctK / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6505379824
Side View
Table 70.0%Crown 46°Girdle: ThickPavilion 56.7°Culet: NoneDepth 67.9%

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: €8,402 EUR|Low: €3,890 EUR|High: €8,402 EUR|Avg: €5,230 EUR
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
Retailer 14
Retailer 15
Retailer 16
November 7, 2026
Retailer 16€3,890 EUR
Retailer 3€3,970 EUR
Retailer 8€3,990 EUR
Retailer 14€4,018 EUR
Retailer 4€4,236 EUR
Retailer 5€4,552 EUR
Retailer 6€4,552 EUR
Retailer 7€4,552 EUR
Retailer 2€4,853 EUR
Retailer 10€4,878 EUR
Retailer 9€5,006 EUR
Retailer 15€5,251 EUR
Retailer 11€5,653 EUR
Retailer 13€7,275 EUR
Retailer 12€7,980 EUR
NZ Jewellers€8,402 EUR

36 data points across 16 retailers

16 retailers€3,890 EUR to €8,402 EUR

B+
Cheapest Retailer
-
€3,890 EUR
B+
Retailer 2
-
€3,970 EUR
View
Retailer 3
-
€3,990 EUR
View
Price last confirmed 10 days ago
B+
Retailer 4
-
€4,018 EUR
View
B
Retailer 5
-
€4,236 EUR
View
Retailer 6
-
€4,552 EUR
View
Price last confirmed 9 days ago
B
Retailer 7
-
€4,552 EUR
View
B
Retailer 8
-
€4,552 EUR
View
B
Retailer 9
-
€4,853 EUR
View
B
Retailer 10
-
€4,878 EUR
View
B
Retailer 11
-
€5,006 EUR
View
B
Retailer 12
-
€5,251 EUR
View
B
Retailer 13
-
€5,653 EUR
View
C
Retailer 14
-
€7,275 EUR
View
C
Retailer 15
-
€7,980 EUR
View
Most Expensive
C
NZ Jewellers
17d9eeda-530a-4a6b-a860-8d667072c6b2 · Nov 5
€8,402 EUR
$9,381 USD
View
15 more retailers have this diamond
Prices start from €3,890 EURSave up to €4,512 EUR

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 Radiant
€3,890 EUR