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Radiant|Natural|GIA

0.51ct I SI2 Radiant Natural Diamond

ID • I/SI2 • GIA 32721

Certificate GIA 32721

Diamond specifications and retailer prices

From €685 EUR
$765 USD
As of October 31, 2026
Save €75 EUR (10%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: €760 EUR at B2C Jewels · As of October 31, 2026
View at B2C Jewels

About this 0.51ct natural radiant diamond

This 0.51ct natural radiant sits in the half to three-quarter carat band, graded I 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 32721. Listed at 2 retailers as of October 31, 2026, with a relatively tight 11% 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
I
Color
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 32721
Dimensions5.87 × 3.85 mm
L/W Ratio1.52
Top View
5.87 mm3.85 mm0.51 ctI / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 32721
Side View
Table 70.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 66.9%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Oct 31
Current: €760 EUR|Low: €685 EUR|High: €805 EUR|Avg: €742 EUR|-5.6%
B2C Jewels
Retailer 2
September 25, 2026
Retailer 2€685 EUR
B2C Jewels€760 EUR

6 data points across 2 retailers

2 retailers€685 EUR to €760 EUR

B+
Cheapest Retailer
-
€685 EUR
$765 USD
Most Expensive
B
B2C Jewels
22196192 · Oct 31
€760 EUR
$849 USD
View
1 more retailer has this diamond
Prices start from €685 EURSave up to €75 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.

B+
0.51ct Radiant
€685 EUR