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Round|Natural|GIA

5.18ct I SI2 Round Natural Diamond

VG • I/SI2 • GIA 1523656372

Certificate GIA 1523656372

Diamond specifications and retailer prices

From $70,900 AUD
$49,803 USD
As of November 1, 2026
Save $51,366 AUD (42%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $122,266 AUD at MOH London · As of November 1, 2026
View at MOH London

About this 5.18ct natural round diamond

This 5.18ct natural round sits in the over five carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by GIA 1523656372. Listed at 21 retailers as of November 1, 2026, with prices from $70,900 to $122,266, a $51,366 spread on the same certified stone. MOH London lists it at $122,266. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

5.18
Carat
I
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryGood
FluorescenceStrong
Crown angle36°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 1523656372
Dimensions11.01 × 10.97 × 6.87 mm
L/W Ratio1.00
Culet sizeNone
Key to symbols
Crystal, Feather, Twinning Wisp, Indented Natural, Natural
Top View
11.01 mm10.97 mm5.18 ctI / SI2
OriginNatural
CutVery Good
PolishVery Good
SymmetryGood
FluorescenceStrong
CertificateGIA 1523656372
Side View
Table 60.0%Crown 36°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 62.5%

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 1
Current: $122,266 AUD|Low: $71,764 AUD|High: $123,739 AUD|Avg: $89,538 AUD|-1.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 6$71,764 AUD
Retailer 5$73,688 AUD
Retailer 3$75,925 AUD
Retailer 2$78,352 AUD
Retailer 8$81,550 AUD
Retailer 9$88,072 AUD
Retailer 4$94,569 AUD
Retailer 7$100,597 AUD
MOH London$122,266 AUD

35 data points across 9 retailers

21 retailers$70,900 AUD to $122,266 AUD

A
Cheapest Retailer
-
$70,900 AUD
$49,803 USD
A
Retailer 2
-
$70,947 AUD
$49,836 USD
View
B+
Retailer 3
-
$71,749 AUD
$50,400 USD
View
B+
Retailer 4
-
$71,764 AUD
$50,410 USD
View
Final sale: no returns
A
Retailer 5
-
$73,688 AUD
₹4,929,662 INR
View
A
Retailer 6
-
$75,925 AUD
$53,333 USD
View
B+
Retailer 7
-
$78,287 AUD
$54,992 USD
View
A
Retailer 8
-
$78,352 AUD
£43,337 GBP
View
Retailer 9
-
$81,550 AUD
$57,284 USD
View
Price last confirmed 52 days ago
B+
Retailer 10
-
$81,550 AUD
$57,284 USD
View
B+
Retailer 11
-
$81,550 AUD
$57,284 USD
View
B+
Retailer 12
-
$81,711 AUD
$57,397 USD
View
Retailer 13
-
$84,811 AUD
$59,575 USD
View
Price last confirmed 51 days ago
B+
Retailer 14
-
$84,811 AUD
$59,575 USD
View
Retailer 15
-
$85,486 AUD
$60,049 USD
View
Price last confirmed 10 days ago
B+
Retailer 16
-
$86,998 AUD
$61,111 USD
View
B+
Retailer 17
-
$88,072 AUD
$61,866 USD
View
Retailer 18
-
$88,072 AUD
$61,866 USD
View
Price last confirmed 56 days ago
B+
Retailer 19
-
$94,569 AUD
€63,266 EUR
View
Retailer 20
-
$100,597 AUD
£55,641 GBP
View
Price last confirmed 33 days ago
Most Expensive
B
MOH London
5AEB34761 · Nov 1
$122,266 AUD
£67,626 GBP
View
20 more retailers have this diamond
Prices start from $70,900 AUDSave up to $51,366 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
5.18ct Round
$70,900 AUD