CaratHunter
Plans
Round|Natural|GIA

4.21ct I VS1 Round Natural Diamond

EX • I/VS1 • GIA 6542806446

Certificate GIA 6542806446

Diamond specifications and retailer prices

From $89,724 AUD
$63,026 USD
As of October 31, 2026
Save $63,144 AUD (41%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $152,868 AUD at MOH London · As of November 1, 2026
View at MOH London

About this 4.21ct natural round diamond

This 4.21ct 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 6542806446. Listed at 13 retailers as of October 31, 2026, with prices from $89,724 to $152,868, a $63,144 spread on the same certified stone. MOH London lists it at $152,868. 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

4.21
Carat
I
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 6542806446
Dimensions10.25 × 10.33 × 6.37 mm
L/W Ratio1.01
Top View
10.25 mm10.33 mm4.21 ctI / VS1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6542806446
Side View
Table 58.0%CrownGirdle: MED-STKPavilion 40.6°Culet: NoneDepth 61.8%

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 31
Current: $152,868 AUD|Low: $94,070 AUD|High: $154,710 AUD|Avg: $110,145 AUD|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 1, 2026
Retailer 4$94,070 AUD
Retailer 3$97,470 AUD
Retailer 8$98,338 AUD
Retailer 7$101,960 AUD
Retailer 5$103,937 AUD
Retailer 6$109,933 AUD
Retailer 2$118,237 AUD
MOH London$152,868 AUD

39 data points across 8 retailers

13 retailers$89,724 AUD to $152,868 AUD

A
Cheapest Retailer
-
$89,724 AUD
$63,026 USD
Final sale: no returns
A
Retailer 2
-
$91,874 AUD
CA$89,634 CAD
View
A
Retailer 3
-
$93,543 AUD
$65,709 USD
View
A
Retailer 4
-
$94,070 AUD
$66,079 USD
View
A
Retailer 5
-
$97,470 AUD
£53,911 GBP
View
A
Retailer 6
-
$98,338 AUD
$69,077 USD
View
B+
Retailer 7
-
$101,960 AUD
$71,621 USD
View
B+
Retailer 8
-
$103,937 AUD
$73,010 USD
View
B+
Retailer 9
-
$107,935 AUD
$75,818 USD
View
B+
Retailer 10
-
$109,933 AUD
$77,222 USD
View
B+
Retailer 11
-
$113,973 AUD
$80,060 USD
View
B+
Retailer 12
-
$118,237 AUD
€79,100 EUR
View
Most Expensive
B
MOH London
81249B3E5 · Nov 1
$152,868 AUD
£84,552 GBP
View
12 more retailers have this diamond
Prices start from $89,724 AUDSave up to $63,144 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
4.21ct Round
$89,724 AUD