Round|Natural|GIA

0.50ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 7566251787

Certificate GIA 7566251787

Diamond specifications and retailer prices

From €487 EUR
As of November 6, 2026
Save €380 EUR (44%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: €1,491 EUR at NZ Jewellers · As of October 17, 2026
View at NZ Jewellers

About this 0.5ct natural round diamond

This 0.5ct natural round sits in the half to three-quarter carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 7566251787. Listed at 16 retailers as of November 6, 2026, with a 78% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

0.50
Carat
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 7566251787
Dimensions5.05 × 5.07 × 3.16 mm
L/W Ratio1.00
Culet sizeNone
Top View
5.05 mm5.07 mm0.50 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7566251787
Side View
Table 56.0%Crown 36.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.4%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: €1,491 EUR|Low: €386 EUR|High: €1,491 EUR|Avg: €625 EUR
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 10€386 EUR
Retailer 11€419 EUR
Retailer 12€449 EUR
Retailer 9€490 EUR
Retailer 7€501 EUR
Retailer 5€565 EUR
Retailer 4€636 EUR
Retailer 6€684 EUR
Retailer 8€696 EUR
Retailer 2€715 EUR
Retailer 3€722 EUR
NZ Jewellers€1,491 EUR

39 data points across 12 retailers

16 retailers€487 EUR to €867 EUR

Retailer 1
-
€386 EUR
Price last confirmed 17 days ago
Retailer 2
-
€419 EUR
View
Price last confirmed 22 days ago
Retailer 3
-
€449 EUR
View
Price last confirmed 19 days ago
B+
Retailer 4
-
€487 EUR
View
B+
Retailer 5
-
€490 EUR
View
B+
Retailer 6
-
€501 EUR
View
B+
Retailer 7
-
€529 EUR
View
B+
Retailer 8
-
€565 EUR
View
B
Retailer 9
-
€633 EUR
View
B
Retailer 10
-
€682 EUR
View
B+
Retailer 11
-
€684 EUR
View
B
Retailer 12
-
€696 EUR
View
B
Retailer 13
-
€715 EUR
View
B+
Retailer 14
-
€722 EUR
View
B
Retailer 15
-
€867 EUR
View
Most Expensive
NZ Jewellers
3c0b1f97-823b-4849-bb47-92b2c3be0b21 · Oct 17
€1,491 EUR
$1,674 USD
View
Price last confirmed 20 days ago
15 more retailers have this diamond
Prices start from €487 EURSave up to €380 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+
0.50ct Round
€487 EUR