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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 €344 EUR
$386 USD
As of November 2, 2026
Save €1,254 EUR (78%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: €1,599 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 €344 to €1,599, a €1,254 spread on the same certified stone. NZ Jewellers lists it at €1,599. 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
Colour
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: €1,599 EUR|Low: €344 EUR|High: €1,599 EUR|Avg: €639 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 12€344 EUR
Retailer 9€368 EUR
Retailer 6€422 EUR
Retailer 8€490 EUR
Retailer 4€495 EUR
Retailer 13€505 EUR
Retailer 2€537 EUR
Retailer 10€612 EUR
Retailer 3€613 EUR
Retailer 5€645 EUR
Retailer 11€672 EUR
Retailer 14€678 EUR
Retailer 7€1,152 EUR
NZ Jewellers€1,599 EUR

6 data points across 14 retailers

15 retailers€344 EUR to €1,599 EUR

A
Cheapest Retailer
-
€344 EUR
$386 USD
Final sale: no returns
A
Retailer 2
-
€368 EUR
₹39,302 INR
View
A
Retailer 3
-
€422 EUR
HK$3,700 HKD
View
A
Retailer 4
-
€490 EUR
View
A
Retailer 5
-
€495 EUR
A$854 AUD
View
A
Retailer 6
-
€500 EUR
$561 USD
View
A
Retailer 7
-
€505 EUR
$566 USD
View
A
Retailer 8
-
€537 EUR
$602 USD
View
A
Retailer 9
-
€612 EUR
£541 GBP
View
B+
Retailer 10
-
€613 EUR
$688 USD
View
B+
Retailer 11
-
€645 EUR
$723 USD
View
B+
Retailer 12
-
€672 EUR
View
B+
Retailer 13
-
€678 EUR
$760 USD
View
B
Retailer 14
-
€1,152 EUR
£1,017 GBP
View
Most Expensive
B
NZ Jewellers
e782b7bf-767a-44c0-bde0-7d09fbe752b7 · Oct 30
€1,599 EUR
$1,793 USD
View
14 more retailers have this diamond
Prices start from €344 EURSave up to €1,254 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
€344 EUR