Radiant|Natural|GIA

5.09ct J SI1 Radiant Natural Diamond

EX • J/SI1 • GIA 15712787

Certificate GIA 15712787

Diamond specifications and retailer prices

From €48,022 EUR
$53,651 USD
As of October 31, 2026
Save €6,555 EUR (12%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: €54,577 EUR at William & Sons Jewelers · As of November 2, 2026
View at William & Sons Jewelers

About this 5.09ct natural radiant diamond

This 5.09ct natural radiant sits in the over five carat band, graded J 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 15712787. Listed at 4 retailers as of October 31, 2026, with a relatively tight 14% 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

5.09
Carat
J
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryGood
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 15712787
Dimensions10.17 × 8.75 × 6.27 mm
L/W Ratio1.16
Top View
10.17 mm8.75 mm5.09 ctJ / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryGood
FluorescenceFaint
CertificateGIA 15712787
Side View
Table 70.0%CrownGirdle: ThickPavilionCulet: NoneDepth 71.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 31
Current: €48,022 EUR|Low: €48,022 EUR|High: €54,577 EUR|Avg: €50,152 EUR
Retailer 1
Retailer 2
William & Sons Jewelers
October 5, 2026
Retailer 1€48,022 EUR
Retailer 2€50,337 EUR
William & Sons Jewelers€54,577 EUR

2 data points across 3 retailers

4 retailers€48,022 EUR to €54,577 EUR

A
Cheapest Retailer
-
€48,022 EUR
$53,651 USD
B+
Retailer 2
-
€50,337 EUR
$56,236 USD
View
B+
Retailer 3
-
€53,152 EUR
A$91,357 AUD
View
Most Expensive
B+
William & Sons Jewelers
cert_15712787 · Nov 2
€54,577 EUR
$60,974 USD
View
Final sale: no returns
3 more retailers have this diamond
Prices start from €48,022 EURSave up to €6,555 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
5.09ct Radiant
€48,022 EUR