Round|Natural|GIA

0.30ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 1377580731

Certificate GIA 1377580731

Diamond specifications and retailer prices

From €159 EUR
As of November 6, 2026
Save €670 EUR (81%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: €829 EUR at NZ Jewellers · As of November 4, 2026
View at NZ Jewellers

About this 0.3ct natural round diamond

This 0.3ct natural round sits in the sub-half-carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1377580731. Listed at 16 retailers as of November 4, 2026, with prices from €159 to €829, a €670 spread on the same certified stone. NZ Jewellers lists it at €829. 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

0.30
Carat
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 1377580731
Dimensions4.34 × 4.31 × 2.69 mm
L/W Ratio1.01
Star length50%
Key to symbols
Crystal, Feather
Top View
4.34 mm4.31 mm0.30 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1377580731
Side View
Table 56.0%Crown 35.5°Girdle: ThinPavilion 41.2°Culet: NoneDepth 62.1%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: €197 EUR|Low: €159 EUR|High: €428 EUR|Avg: €292 EUR
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 9€159 EUR
Retailer 5€187 EUR
Retailer 1€197 EUR
Retailer 8€237 EUR
Retailer 7€240 EUR
Retailer 4€285 EUR
Retailer 3€320 EUR
Retailer 2€388 EUR
Retailer 6€421 EUR

40 data points across 9 retailers

16 retailers€159 EUR to €829 EUR

A
Cheapest Retailer
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€159 EUR
A
Retailer 2
-
€184 EUR
View
A
Retailer 3
-
€187 EUR
View
Retailer 4
-
€197 EUR
View
Price last confirmed 8 days ago
A
Retailer 5
-
€197 EUR
View
A
Retailer 6
-
€204 EUR
View
A
Retailer 7
-
€230 EUR
View
A
Retailer 8
-
€237 EUR
View
A
Retailer 9
-
€240 EUR
View
A
Retailer 10
-
€247 EUR
View
B+
Retailer 11
-
€285 EUR
View
B+
Retailer 12
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€298 EUR
View
B+
Retailer 13
-
€320 EUR
View
B+
Retailer 14
-
€388 EUR
View
B
Retailer 15
-
€421 EUR
View
Most Expensive
B
NZ Jewellers
ff69c0e4-b614-4989-a8d1-cae0109d269d · Nov 4
€829 EUR
$931 USD
View
15 more retailers have this diamond
Prices start from €159 EURSave up to €670 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
0.30ct Round
€159 EUR