Round|Natural|GIA

5.09ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 1192130807

Certificate GIA 1192130807

Diamond specifications and retailer prices

From $59,463 USD
As of November 6, 2026
Save $44,633 USD (43%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $104,096 USD 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 $59,463 to $104,096, a $44,633 spread on the same certified stone. MOH London lists it at $104,096. 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: $104,096 USD|Low: $59,463 USD|High: $105,632 USD|Avg: $76,744 USD|-1.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 7$59,463 USD
Retailer 2$65,396 USD
Retailer 6$75,061 USD
Retailer 4$75,225 USD
Retailer 5$75,225 USD
Retailer 3$79,132 USD
MOH London$104,096 USD

30 data points across 7 retailers

7 retailers$59,463 USD to $104,096 USD

A
Cheapest Retailer
-
$59,463 USD
B+
Retailer 2
-
$65,396 USD
View
B
Retailer 3
-
$75,061 USD
View
B
Retailer 4
-
$75,225 USD
View
B
Retailer 5
-
$75,225 USD
View
B
Retailer 6
-
$79,132 USD
View
Most Expensive
B
MOH London
01EF9C341 · Nov 4
$104,096 USD
£81,965 GBP
View
6 more retailers have this diamond
Prices start from $59,463 USDSave up to $44,633 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
5.09ct Round
$59,463 USD