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Radiant|Natural|GIA

0.51ct H SI1 Radiant Natural Diamond

EX • H/SI1 • GIA 1563729567

Certificate GIA 1563729567

Diamond specifications and retailer prices

From €346 EUR
$386 USD
As of November 2, 2026
Save €1,259 EUR (78%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: €1,605 EUR at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 0.51ct natural radiant diamond

This 0.51ct natural radiant sits in the half to three-quarter carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1563729567. Listed at 15 retailers as of October 30, 2026, with prices from €346 to €1,605, a €1,259 spread on the same certified stone. NZ Jewellers lists it at €1,605. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

0.51
Carat
H
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1563729567
Dimensions5.67 × 3.94 × 2.61 mm
L/W Ratio1.44
Girdle conditionPolished
Key to symbols
Twinning Wisp
Top View
5.67 mm3.94 mm0.51 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1563729567
Side View
Table 64.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 66.3%

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 2
Current: €1,605 EUR|Low: €346 EUR|High: €1,605 EUR|Avg: €642 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
November 2, 2026
Retailer 8€346 EUR
Retailer 9€374 EUR
Retailer 5€424 EUR
Retailer 13€496 EUR
Retailer 3€497 EUR
Retailer 10€507 EUR
Retailer 6€557 EUR
Retailer 2€615 EUR
Retailer 14€616 EUR
Retailer 4€647 EUR
Retailer 7€675 EUR
Retailer 11€680 EUR
Retailer 12€1,170 EUR
NZ Jewellers€1,605 EUR

6 data points across 14 retailers

15 retailers€346 EUR to €1,605 EUR

A
Cheapest Retailer
-
€346 EUR
$386 USD
Final sale: no returns
A
Retailer 2
-
€374 EUR
₹39,789 INR
View
A
Retailer 3
-
€424 EUR
HK$3,700 HKD
View
A
Retailer 4
-
€496 EUR
View
A
Retailer 5
-
€497 EUR
A$854 AUD
View
A
Retailer 6
-
€502 EUR
$561 USD
View
A
Retailer 7
-
€507 EUR
$566 USD
View
A
Retailer 8
-
€557 EUR
$622 USD
View
A
Retailer 9
-
€615 EUR
£541 GBP
View
B+
Retailer 10
-
€616 EUR
$688 USD
View
B+
Retailer 11
-
€647 EUR
$723 USD
View
B+
Retailer 12
-
€675 EUR
View
B+
Retailer 13
-
€680 EUR
$760 USD
View
B
Retailer 14
-
€1,170 EUR
£1,029 GBP
View
Most Expensive
B
NZ Jewellers
e782b7bf-767a-44c0-bde0-7d09fbe752b7 · Oct 30
€1,605 EUR
$1,793 USD
View
14 more retailers have this diamond
Prices start from €346 EURSave up to €1,259 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.

A
0.51ct Radiant
€346 EUR