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Cushion|Natural|GIA

0.51ct G SI1 Cushion Natural Diamond

EX • G/SI1 • GIA 1545558858

Certificate GIA 1545558858

Diamond specifications and retailer prices

From €457 EUR
As of November 6, 2026
Save €43 EUR (9%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: €500 EUR at Fonder Diamond · As of November 5, 2026
View at Fonder Diamond

About this 0.51ct natural cushion diamond

This 0.51ct natural cushion sits in the half to three-quarter carat band, graded G 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 1545558858. Listed at 2 retailers as of November 5, 2026, with a relatively tight 9% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Pavilion angle41.1°
OriginNatural
Grading LabGIA
CertificateGIA 1545558858
Dimensions4.68 × 4.66 × 3.12 mm
L/W Ratio1.00
Girdle conditionFaceted
Top View
4.68 mm4.66 mm0.51 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1545558858
Side View
Table 65.0%CrownGirdle: STK-VTKPavilion 41.1°Culet: NoneDepth 66.9%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: €500 EUR|Low: €402 EUR|High: €797 EUR|Avg: €569 EUR|+0.3%
Fonder Diamond
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
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Retailer 8
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Retailer 11
Retailer 12
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Retailer 15
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Retailer 19
November 5, 2026
Retailer 5€402 EUR
Retailer 18€403 EUR
Retailer 6€457 EUR
Retailer 13€459 EUR
Retailer 14€481 EUR
Fonder Diamond€500 EUR
Retailer 19€527 EUR
Retailer 17€531 EUR
Retailer 8€555 EUR
Retailer 9€555 EUR
Retailer 7€573 EUR
Retailer 16€587 EUR
Retailer 2€602 EUR
Retailer 15€616 EUR
Retailer 3€654 EUR
Retailer 11€696 EUR
Retailer 10€710 EUR
Retailer 12€716 EUR
Retailer 4€797 EUR

6 data points across 19 retailers

2 retailers€457 EUR to €500 EUR

A
Cheapest Retailer
-
€457 EUR
Most Expensive
B+
Fonder Diamond
636701768 · Nov 5
€500 EUR
SGD 754 SGD
View
1 more retailer has this diamond
Prices start from €457 EURSave up to €43 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 Cushion
€457 EUR