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Round|Natural|GIA

5.09ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 1192130807

Certificate GIA 1192130807

Diamond specifications and retailer prices

From $83,046 CAD
As of November 6, 2026
Save $62,334 CAD (43%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $145,380 CAD at MOH London · As of November 4, 2026
View at MOH London

About this 5.09ct natural round diamond

This 5.09ct 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 1192130807. Listed at 7 retailers as of November 4, 2026, with prices from $83,046 to $145,380, a $62,334 spread on the same certified stone. MOH London lists it at $145,380. 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

5.09
Carat
K
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 1192130807
Dimensions11.05 × 11.07 × 6.80 mm
L/W Ratio1.00
Culet sizeNone
Top View
11.05 mm11.07 mm5.09 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1192130807
Side View
Table 57.0%Crown 34°Girdle: MED-STKPavilion 41°Culet: NoneDepth 61.4%

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: $145,380 CAD|Low: $83,046 CAD|High: $147,526 CAD|Avg: $107,181 CAD|-1.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 7$83,046 CAD
Retailer 2$91,332 CAD
Retailer 6$104,830 CAD
Retailer 4$105,059 CAD
Retailer 5$105,059 CAD
Retailer 3$110,516 CAD
MOH London$145,380 CAD

30 data points across 7 retailers

7 retailers$83,046 CAD to $145,380 CAD

A
Cheapest Retailer
-
$83,046 CAD
B+
Retailer 2
-
$91,332 CAD
View
B
Retailer 3
-
$104,830 CAD
View
B
Retailer 4
-
$105,059 CAD
View
B
Retailer 5
-
$105,059 CAD
View
B
Retailer 6
-
$110,516 CAD
View
Most Expensive
B
MOH London
01EF9C341 · Nov 4
$145,380 CAD
£81,965 GBP
View
6 more retailers have this diamond
Prices start from $83,046 CADSave up to $62,334 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
5.09ct Round
$83,046 CAD