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Round|Natural|GIA

0.42ct E SI2 Round Natural Diamond

EX • E/SI2

Diamond specifications and retailer prices

From $375 AUD
₹25,087 INR
As of October 29, 2026
Save $1,730 AUD (82%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $2,164 AUD at NZ Jewellers · As of September 28, 2026
View at NZ Jewellers

About this 0.42ct natural round diamond

This 0.42ct natural round sits in the sub-half-carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA. Listed at 19 retailers as of October 27, 2026, with a 461% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

0.42
Carat
E
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
Dimensions4.77 × 4.73 × 3.00 mm
L/W Ratio1.01
Top View
4.77 mm4.73 mm0.42 ctE / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA
Side View
Table 56.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 63.2%

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: $1,986 AUD|Low: $375 AUD|High: $2,115 AUD|Avg: $836 AUD|-6.1%
NZ Jewellers
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
October 30, 2026
Retailer 8$375 AUD
Retailer 5$455 AUD
Retailer 14$521 AUD
Retailer 15$552 AUD
Retailer 9$561 AUD
Retailer 12$581 AUD
Retailer 2$670 AUD
Retailer 3$700 AUD
Retailer 6$722 AUD
Retailer 7$727 AUD
Retailer 11$793 AUD
Retailer 13$855 AUD
Retailer 10$1,077 AUD
Retailer 4$1,240 AUD
NZ Jewellers$1,986 AUD

21 data points across 15 retailers

19 retailers$375 AUD to $2,105 AUD

A
Cheapest Retailer
-
$375 AUD
₹25,087 INR
A
Retailer 2
-
$455 AUD
HK$2,500 HKD
View
A
Retailer 3
-
$521 AUD
$366 USD
View
A
Retailer 4
-
$552 AUD
SGD 524 SGD
View
A
Retailer 5
-
$561 AUD
$394 USD
View
Retailer 6
-
$564 AUD
$396 USD
View
Price last confirmed 32 days ago
A
Retailer 7
-
$581 AUD
$408 USD
View
Retailer 8
-
$650 AUD
$457 USD
View
Price last confirmed 32 days ago
A
Retailer 9
-
$670 AUD
£371 GBP
View
A
Retailer 10
-
$700 AUD
$492 USD
View
A
Retailer 11
-
$722 AUD
$507 USD
View
A
Retailer 12
-
$727 AUD
$511 USD
View
A
Retailer 13
-
$793 AUD
$557 USD
View
A
Retailer 14
-
$855 AUD
€572 EUR
View
B+
Retailer 15
-
$1,077 AUD
£596 GBP
View
B+
Retailer 16
-
$1,240 AUD
£686 GBP
View
B
Retailer 17
-
$1,986 AUD
$1,395 USD
View
B
Retailer 18
-
$2,105 AUD
CA$2,054 CAD
View
Most Expensive
NZ Jewellers
66acc9f9-7d8c-49b1-ae4a-1d6a558c5f76 · Sep 28
$2,164 AUD
$1,520 USD
View
Price last confirmed 31 days ago
18 more retailers have this diamond
Prices start from $375 AUDSave up to $1,730 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
0.42ct Round
$375 AUD