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Round|Natural|GIA

4.51ct I VS1 Round Natural Diamond

EX • I/VS1 • GIA 1246058156

Certificate GIA 1246058156

Diamond specifications and retailer prices

From $105,392 AUD
$74,032 USD
As of October 29, 2026
Save $66,788 AUD (39%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $172,180 AUD at MOH London · As of November 1, 2026
View at MOH London

About this 4.51ct natural round diamond

This 4.51ct natural round sits in the three to five carat band, graded I colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by GIA 1246058156. Listed at 8 retailers as of October 29, 2026, with prices from $105,392 to $172,180, a $66,788 spread on the same certified stone. MOH London lists it at $172,180. 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

4.51
Carat
I
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 1246058156
Dimensions10.84 × 10.88 × 6.38 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Needle, Cloud
Top View
10.84 mm10.88 mm4.51 ctI / VS1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1246058156
Side View
Table 60.0%Crown 31.5°Girdle: MediumPavilion 41.2°Culet: NoneDepth 58.8%

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 29
Current: $172,180 AUD|Low: $105,392 AUD|High: $172,410 AUD|Avg: $122,550 AUD|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 4$105,392 AUD
Retailer 6$105,986 AUD
Retailer 3$110,724 AUD
Retailer 5$117,102 AUD
Retailer 9$117,635 AUD
Retailer 7$121,607 AUD
Retailer 8$123,858 AUD
Retailer 2$130,575 AUD
MOH London$172,180 AUD

6 data points across 9 retailers

8 retailers$105,392 AUD to $172,180 AUD

A
Cheapest Retailer
-
$105,392 AUD
$74,032 USD
A
Retailer 2
-
$105,986 AUD
$74,449 USD
View
B+
Retailer 3
-
$110,724 AUD
£61,242 GBP
View
B+
Retailer 4
-
$117,102 AUD
$82,258 USD
View
B+
Retailer 5
-
$117,635 AUD
$82,632 USD
View
B+
Retailer 6
-
$121,607 AUD
$85,422 USD
View
B+
Retailer 7
-
$130,575 AUD
€87,354 EUR
View
Most Expensive
B
MOH London
EA8485C8C · Nov 1
$172,180 AUD
£95,234 GBP
View
7 more retailers have this diamond
Prices start from $105,392 AUDSave up to $66,788 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
4.51ct Round
$105,392 AUD