Round|Natural|GIA

5.15ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 5232020565

Certificate GIA 5232020565

Diamond specifications and retailer prices

From $58,057 USD
As of November 6, 2026
Save $13,150 USD (18%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $71,207 USD 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 $58,057 to $71,207, a $13,150 spread on the same certified stone. 77 Diamonds lists it at $71,207. 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
Color
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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Price History

Last verified: Nov 6
Current: $71,207 USD|Low: $57,742 USD|High: $73,956 USD|Avg: $61,992 USD|-1.3%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 6, 2026
Retailer 2$57,742 USD
Retailer 3$58,057 USD
Retailer 4$58,419 USD
Retailer 5$60,692 USD
77 Diamonds$71,207 USD

38 data points across 5 retailers

5 retailers$58,057 USD to $71,207 USD

Retailer 1
-
$57,742 USD
Price last confirmed 9 days ago
A
Retailer 2
-
$58,057 USD
View
A
Retailer 3
-
$58,419 USD
View
B+
Retailer 4
-
$60,692 USD
View
Most Expensive
B+
77 Diamonds
RBZQAJVNJQX · Nov 6
$71,207 USD
£56,069 GBP
View
4 more retailers have this diamond
Prices start from $58,057 USDSave up to $13,150 USD

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
$58,057 USD