CaratHunter
Plans
Round|Natural|GIA

18.03ct M VS1 Round Natural Diamond

EX • M/VS1 • GIA 5231883468

Certificate GIA 5231883468

Diamond specifications and retailer prices

From $432,351 AUD
₹28,924,065 INR
As of October 31, 2026
Save $236,976 AUD (35%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $669,327 AUD at Aurelinne · As of October 31, 2026
View at Aurelinne

About this 18.03ct natural round diamond

This 18.03ct natural round sits in the over five carat band, graded M colour (faint-tinted) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by GIA 5231883468. Listed at 10 retailers as of October 31, 2026, with prices from $432,351 to $669,327, a $236,976 spread on the same certified stone. Aurelinne lists it at $669,327. At this carat range, natural pricing varies dramatically across retailers, so the cross-retailer spread on this exact stone is your single best indicator of fair price.

The 4Cs

18.03
Carat
M
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5231883468
Dimensions16.52 × 16.65 × 10.51 mm
L/W Ratio1.01
Top View
16.52 mm16.65 mm18.03 ctM / VS1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5231883468
Side View
Table 57.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 63.4%

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 31
Current: $669,327 AUD|Low: $431,368 AUD|High: $669,327 AUD|Avg: $583,323 AUD
Aurelinne
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 31, 2026
Retailer 2$432,351 AUD
Retailer 7$523,784 AUD
Retailer 6$533,890 AUD
Retailer 10$561,461 AUD
Retailer 3$573,568 AUD
Retailer 11$594,957 AUD
Retailer 4$599,519 AUD
Retailer 8$619,747 AUD
Retailer 9$644,536 AUD
Retailer 5$648,707 AUD
Aurelinne$669,327 AUD

40 data points across 11 retailers

10 retailers$432,351 AUD to $669,327 AUD

A
Cheapest Retailer
-
$432,351 AUD
₹28,924,065 INR
Retailer 2
-
$523,784 AUD
£289,708 GBP
View
Price last confirmed 31 days ago
B
Retailer 3
-
$561,461 AUD
$394,395 USD
View
B
Retailer 4
-
$573,568 AUD
$402,900 USD
View
B
Retailer 5
-
$594,957 AUD
$417,924 USD
View
B
Retailer 6
-
$599,519 AUD
€401,075 EUR
View
B
Retailer 7
-
$619,747 AUD
$435,338 USD
View
B
Retailer 8
-
$644,536 AUD
$452,751 USD
View
B
Retailer 9
-
$648,707 AUD
ZAR 7,361,559 ZAR
View
Most Expensive
B
Aurelinne
a321bb1c-b7c7-466c-b1e3-51871fd173df · Oct 31
$669,327 AUD
$470,165 USD
View
9 more retailers have this diamond
Prices start from $432,351 AUDSave up to $236,976 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
18.03ct Round
$432,351 AUD