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Round|Natural|IGI

4.20ct I VVS1 Round Natural Diamond

EX • I/VVS1 • IGI 833644533

Shape and cutting style on the report: Round brilliant

Certificate IGI 833644533

Diamond specifications and retailer prices

From $71,132 AUD
$50,026 USD
As of October 27, 2026
Save $16,299 AUD (19%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $110,548 AUD at MOH London · As of October 21, 2026
View at MOH London

About this 4.2ct natural round diamond

This 4.2ct natural round sits in the three to five carat band, graded I colour (near-colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI 833644533. Listed at 12 retailers as of October 27, 2026, with a relatively tight 23% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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

4.20
Carat
I
Colour
VVS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.3°
Pavilion angle41.1°
OriginNatural
Grading LabIGI
CertificateIGI 833644533
Dimensions10.27 × 10.32 × 6.38 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizeNone
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
10.27 mm10.32 mm4.20 ctI / VVS1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 833644533
Side View
Table 59.0%Crown 35.3°Girdle: MED-STKPavilion 41.1°Culet: NoneDepth 62.0%

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 27
Current: $110,548 AUD|Low: $65,248 AUD|High: $112,394 AUD|Avg: $81,595 AUD|-1.5%
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
Retailer 15
Retailer 16
October 29, 2026
Retailer 8$65,467 AUD
Retailer 7$70,815 AUD
Retailer 14$71,132 AUD
Retailer 15$71,240 AUD
Retailer 9$72,853 AUD
Retailer 16$73,342 AUD
Retailer 5$78,490 AUD
Retailer 2$80,228 AUD
Retailer 3$81,110 AUD
Retailer 4$81,761 AUD
Retailer 13$84,192 AUD
Retailer 10$84,895 AUD
Retailer 6$87,249 AUD
Retailer 12$87,431 AUD
Retailer 11$98,215 AUD
MOH London$110,548 AUD

35 data points across 16 retailers

12 retailers$71,132 AUD to $87,431 AUD

A
Cheapest Retailer
-
$71,132 AUD
$50,026 USD
A
Retailer 2
-
$71,240 AUD
$50,102 USD
View
Final sale: no returns
A
Retailer 3
-
$72,853 AUD
£40,344 GBP
View
A
Retailer 4
-
$73,342 AUD
$51,580 USD
View
A
Retailer 5
-
$80,228 AUD
£44,427 GBP
View
A
Retailer 6
-
$81,110 AUD
£44,916 GBP
View
Price last confirmed 7 days ago
A
Retailer 7
-
$81,761 AUD
$57,501 USD
View
Price last confirmed 29 days ago
A
Retailer 8
-
$84,192 AUD
$59,211 USD
View
Price last confirmed 7 days ago
A
Retailer 9
-
$84,895 AUD
€56,862 EUR
View
Price last confirmed 7 days ago
A
Retailer 10
-
$87,249 AUD
ZAR 991,291 ZAR
View
Price last confirmed 33 days ago
A
Retailer 11
-
$87,431 AUD
$61,489 USD
View
Most Expensive
B+
MOH London
40C09100C · Oct 21
$110,548 AUD
£61,218 GBP
View
Price last confirmed 8 days ago
11 more retailers have this diamond
Prices start from $71,132 AUDSave up to $16,299 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
4.20ct Round
$71,132 AUD