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Oval|Natural|GIA

5.15ct E SI1 Oval Natural Diamond

EX • E/SI1 • GIA 6194954327

Certificate GIA 6194954327

Diamond specifications and retailer prices

From $158,351 AUD
$111,233 USD
As of October 30, 2026
Save $115,332 AUD (42%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $273,684 AUD at MOH London · As of October 29, 2026
View at MOH London

About this 5.15ct natural oval diamond

This 5.15ct natural oval sits in the over five carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6194954327. Listed at 7 retailers as of October 29, 2026, with prices from $158,351 to $273,684, a $115,332 spread on the same certified stone. MOH London lists it at $273,684. 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
E
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6194954327
Dimensions13.49 × 9.39 × 5.71 mm
L/W Ratio1.44
Culet sizeNone
Key to symbols
Crystal, Feather, Needle, Indented Natural
Top View
13.49 mm9.39 mm5.15 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6194954327
Side View
Table 56.0%CrownGirdle: VTN-VTKPavilionCulet: NoneDepth 60.8%

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: Oct 30
Current: $273,684 AUD|Low: $152,140 AUD|High: $287,437 AUD|Avg: $185,483 AUD|-4.8%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 30, 2026
Retailer 7$152,140 AUD
Retailer 2$158,351 AUD
Retailer 6$159,351 AUD
Retailer 5$162,408 AUD
Retailer 3$174,264 AUD
Retailer 4$205,169 AUD
MOH London$273,684 AUD

35 data points across 7 retailers

7 retailers$158,351 AUD to $273,684 AUD

Retailer 1
-
$152,140 AUD
$106,870 USD
Price last confirmed 22 days ago
A
Retailer 2
-
$158,351 AUD
$111,233 USD
View
Final sale: no returns
A
Retailer 3
-
$159,351 AUD
$111,935 USD
View
Retailer 4
-
$162,408 AUD
View
Price last confirmed 26 days ago
A
Retailer 5
-
$174,264 AUD
£96,386 GBP
View
B+
Retailer 6
-
$205,169 AUD
€137,257 EUR
View
Most Expensive
B
MOH London
7819A44C4 · Oct 29
$273,684 AUD
£151,376 GBP
View
6 more retailers have this diamond
Prices start from $158,351 AUDSave up to $115,332 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 Oval
$158,351 AUD