CaratHunter
Plans
Round|Natural|GIA

5.15ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 1162220114

Certificate GIA 1162220114

Diamond specifications and retailer prices

From $78,129 AUD
As of November 4, 2026
Save $43,850 AUD (36%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $121,979 AUD at MOH London · As of November 2, 2026
View at MOH London

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 1162220114. Listed at 10 retailers as of November 2, 2026, with prices from $78,129 to $121,979, a $43,850 spread on the same certified stone. MOH London lists it at $121,979. 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
FluorescenceMedium
Crown angle35°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1162220114
Dimensions11.13 × 11.15 × 6.82 mm
L/W Ratio1.00
Culet sizeNone
Top View
11.13 mm11.15 mm5.15 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 1162220114
Side View
Table 57.0%Crown 35°Girdle: THN-MEDPavilion 40.8°Culet: NoneDepth 61.2%

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: $121,979 AUD|Low: $74,846 AUD|High: $123,449 AUD|Avg: $88,477 AUD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
November 4, 2026
Retailer 4$74,846 AUD
Retailer 5$77,783 AUD
Retailer 9$78,129 AUD
Retailer 2$79,169 AUD
Retailer 11$80,247 AUD
Retailer 7$81,357 AUD
Retailer 10$83,424 AUD
Retailer 6$86,211 AUD
Retailer 13$89,803 AUD
Retailer 8$92,673 AUD
Retailer 3$93,395 AUD
Retailer 12$93,895 AUD
Retailer 14$96,988 AUD
MOH London$121,979 AUD

32 data points across 14 retailers

10 retailers$78,129 AUD to $121,979 AUD

Retailer 1
-
$74,846 AUD
Price last confirmed 32 days ago
A
Retailer 2
-
$78,129 AUD
View
A
Retailer 3
-
$79,169 AUD
View
A
Retailer 4
-
$81,357 AUD
View
B+
Retailer 5
-
$83,424 AUD
View
Retailer 6
-
$89,803 AUD
View
Price last confirmed 38 days ago
Retailer 7
-
$92,673 AUD
View
Price last confirmed 15 days ago
Retailer 8
-
$93,395 AUD
View
Price last confirmed 36 days ago
Retailer 9
-
$96,988 AUD
View
Price last confirmed 38 days ago
Most Expensive
B
MOH London
847235BFF · Nov 2
$121,979 AUD
£67,236 GBP
View
9 more retailers have this diamond
Prices start from $78,129 AUDSave up to $43,850 AUD

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
$78,129 AUD