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Round|Natural|GIA

5.15ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 5232020565

Certificate GIA 5232020565

Diamond specifications and retailer prices

From €51,726 EUR
As of November 6, 2026
Save €11,716 EUR (18%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: €63,442 EUR at 77 Diamonds · As of November 6, 2026
View at 77 Diamonds

About this 5.15ct natural round diamond

This 5.15ct natural round sits in the over five carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 5232020565. Listed at 5 retailers as of November 6, 2026, with prices from €51,726 to €63,442, a €11,716 spread on the same certified stone. 77 Diamonds lists it at €63,442. 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

5.15
Carat
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 5232020565
Dimensions10.99 × 10.92 × 6.76 mm
L/W Ratio1.01
Top View
10.99 mm10.92 mm5.15 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5232020565
Side View
Table 59.0%Crown 35°Girdle: Slightly ThickPavilion 40.6°Culet: NoneDepth 61.9%

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: €63,442 EUR|Low: €51,445 EUR|High: €65,891 EUR|Avg: €55,231 EUR|-1.3%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 6, 2026
Retailer 2€51,445 EUR
Retailer 3€51,726 EUR
Retailer 4€52,048 EUR
Retailer 5€54,074 EUR
77 Diamonds€63,442 EUR

38 data points across 5 retailers

5 retailers€51,726 EUR to €63,442 EUR

Retailer 1
-
€51,445 EUR
Price last confirmed 9 days ago
A
Retailer 2
-
€51,726 EUR
View
A
Retailer 3
-
€52,048 EUR
View
B+
Retailer 4
-
€54,074 EUR
View
Most Expensive
B+
77 Diamonds
RBZQAJVNJQX · Nov 6
€63,442 EUR
£56,069 GBP
View
4 more retailers have this diamond
Prices start from €51,726 EURSave up to €11,716 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
5.15ct Round
€51,726 EUR