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Round|Natural|GIA

5.15ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 7531243741

Certificate GIA 7531243741

Diamond specifications and retailer prices

From $81,922 CAD
As of November 4, 2026
Save $51,639 CAD (39%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $172,969 CAD at Aurelinne · As of September 19, 2026
View at Aurelinne

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 7531243741. Listed at 17 retailers as of November 4, 2026, with a 63% 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

5.15
Carat
K
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 7531243741
Dimensions11.18 × 11.12 × 6.77 mm
L/W Ratio1.01
Star length45%
Culet sizeNone
Key to symbols
Cloud, Crystal, Needle
Top View
11.18 mm11.12 mm5.15 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7531243741
Side View
Table 59.0%Crown 33.5°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 60.7%

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 4
Current: $85,240 CAD|Low: $81,922 CAD|High: $153,750 CAD|Avg: $102,259 CAD|+1.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 6, 2026
Retailer 8$81,922 CAD
Retailer 12$82,383 CAD
Retailer 1$85,240 CAD
Retailer 13$86,102 CAD
Retailer 4$90,060 CAD
Retailer 9$91,025 CAD
Retailer 10$91,025 CAD
Retailer 3$92,363 CAD
Retailer 11$96,275 CAD
Retailer 2$99,363 CAD
Retailer 6$103,232 CAD
Retailer 7$133,561 CAD
Retailer 5$142,090 CAD

32 data points across 13 retailers

17 retailers$81,922 CAD to $133,561 CAD

A
Cheapest Retailer
-
$81,922 CAD
A
Retailer 2
-
$82,383 CAD
View
A
Retailer 3
-
$85,240 CAD
View
Retailer 4
-
$87,163 CAD
View
Price last confirmed 40 days ago
B+
Retailer 5
-
$89,322 CAD
View
B+
Retailer 6
-
$91,025 CAD
View
B+
Retailer 7
-
$91,025 CAD
View
Retailer 8
-
$96,212 CAD
View
Price last confirmed 38 days ago
B+
Retailer 9
-
$96,275 CAD
View
Retailer 10
-
$99,363 CAD
View
Price last confirmed 36 days ago
Retailer 11
-
$100,061 CAD
View
Price last confirmed 36 days ago
B+
Retailer 12
-
$103,232 CAD
View
Retailer 13
-
$103,908 CAD
View
Price last confirmed 38 days ago
B
Retailer 14
-
$133,561 CAD
View
Retailer 15
-
$145,094 CAD
View
Price last confirmed 50 days ago
Retailer 16
-
$166,563 CAD
View
Price last confirmed 53 days ago
Most Expensive
Aurelinne
ca0647ac-7375-4d61-b4d2-c7d77e0a9b7a · Sep 19
$172,969 CAD
$123,850 USD
View
Price last confirmed 48 days ago
16 more retailers have this diamond
Prices start from $81,922 CADSave up to $51,639 CAD

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
$81,922 CAD