Radiant|Natural|GIA

0.51ct J I1 Radiant Natural Diamond

EX • J/I1 • GIA 1445790636

Certificate GIA 1445790636

Diamond specifications and retailer prices

From €365 EUR
HK$3,200 HKD
As of November 1, 2026
Save €253 EUR (41%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: €618 EUR at DreamStone · As of October 31, 2026
View at DreamStone

About this 0.51ct natural radiant diamond

This 0.51ct natural radiant sits in the half to three-quarter carat band, graded J colour (near-colourless) and I1 clarity (included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1445790636. Listed at 8 retailers as of October 31, 2026, with prices from €365 to €618, a €253 spread on the same certified stone. DreamStone lists it at €618. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

0.51
Carat
J
Colour
I1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1445790636
Dimensions5.03 × 4.01 × 2.87 mm
L/W Ratio1.25
Key to symbols
Feather
Top View
5.03 mm4.01 mm0.51 ctJ / I1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1445790636
Side View
Table 70.0%CrownGirdlePavilionCulet: NoneDepth 71.5%

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 1
Current: €618 EUR|Low: €365 EUR|High: €1,668 EUR|Avg: €622 EUR
DreamStone
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 10€365 EUR
Retailer 8€435 EUR
Retailer 4€469 EUR
Retailer 5€469 EUR
Retailer 6€482 EUR
Retailer 9€502 EUR
Retailer 11€587 EUR
Retailer 2€591 EUR
DreamStone€618 EUR
Retailer 3€654 EUR
Retailer 7€1,668 EUR

20 data points across 11 retailers

8 retailers€365 EUR to €618 EUR

A
Cheapest Retailer
-
€365 EUR
HK$3,200 HKD
B+
Retailer 2
-
€435 EUR
$488 USD
View
B
Retailer 3
-
€469 EUR
$526 USD
View
B
Retailer 4
-
€469 EUR
$526 USD
View
B
Retailer 5
-
€502 EUR
$563 USD
View
B
Retailer 6
-
€591 EUR
View
Most Expensive
B
DreamStone
67d88b69eac682738cabfbbb · Oct 31
€618 EUR
$693 USD
View
6 more retailers have this diamond
Prices start from €365 EURSave up to €253 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
€365 EUR