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Radiant|Natural|GIA

0.51ct G SI2 Radiant Natural Diamond

ID • G/SI2 • GIA 2556750688

Certificate GIA 2556750688

Diamond specifications and retailer prices

From €401 EUR
$448 USD
As of October 30, 2026
Save €1,157 EUR (74%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: €1,558 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 G colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2556750688. Listed at 17 retailers as of October 30, 2026, with prices from €401 to €1,558, a €1,157 spread on the same certified stone. NZ Jewellers lists it at €1,558. 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
G
Color
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle53.9°
OriginNatural
Grading LabGIA
CertificateGIA 2556750688
Dimensions5.96 × 3.87 × 2.61 mm
L/W Ratio1.54
Girdle conditionPolished
Culet sizeNone
Top View
5.96 mm3.87 mm0.51 ctG / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2556750688
Side View
Table 66.0%Crown 36°Girdle: MED-STKPavilion 53.9°Culet: NoneDepth 67.5%

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: Oct 30
Current: €1,558 EUR|Low: €354 EUR|High: €1,610 EUR|Avg: €607 EUR|-3.2%
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
Retailer 17
November 1, 2026
Retailer 15€401 EUR
Retailer 6€415 EUR
Retailer 2€425 EUR
Retailer 4€450 EUR
Retailer 9€458 EUR
Retailer 7€485 EUR
Retailer 8€485 EUR
Retailer 3€519 EUR
Retailer 13€524 EUR
Retailer 5€545 EUR
Retailer 10€594 EUR
Retailer 11€623 EUR
Retailer 16€623 EUR
Retailer 17€632 EUR
Retailer 14€667 EUR
Retailer 12€1,148 EUR
NZ Jewellers€1,558 EUR

36 data points across 17 retailers

17 retailers€401 EUR to €1,558 EUR

A
Cheapest Retailer
-
€401 EUR
$448 USD
A
Retailer 2
-
€415 EUR
$464 USD
View
Final sale: no returns
A
Retailer 3
-
€425 EUR
$475 USD
View
A
Retailer 4
-
€450 EUR
$503 USD
View
A
Retailer 5
-
€458 EUR
HK$4,000 HKD
View
A
Retailer 6
-
€485 EUR
$542 USD
View
A
Retailer 7
-
€485 EUR
$542 USD
View
A
Retailer 8
-
€519 EUR
$580 USD
View
A
Retailer 9
-
€524 EUR
$585 USD
View
A
Retailer 10
-
€545 EUR
$609 USD
View
A
Retailer 11
-
€594 EUR
£522 GBP
View
A
Retailer 12
-
€623 EUR
£548 GBP
View
A
Retailer 13
-
€623 EUR
£548 GBP
View
A
Retailer 14
-
€632 EUR
$706 USD
View
B+
Retailer 15
-
€667 EUR
View
B
Retailer 16
-
€1,148 EUR
£1,010 GBP
View
Most Expensive
B
NZ Jewellers
e6671163-bf29-4252-8837-769f134d2016 · Oct 30
€1,558 EUR
$1,741 USD
View
16 more retailers have this diamond
Prices start from €401 EURSave up to €1,157 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
€401 EUR