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Round|Natural|GIA

0.42ct E SI1 Round Natural Diamond

EX • E/SI1 • GIA 1537690621

Certificate GIA 1537690621

Diamond specifications and retailer prices

From $547 AUD
₹36,628 INR
As of October 29, 2026
Save $1,157 AUD (68%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $2,555 AUD at NZ Jewellers · As of October 3, 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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1537690621. Listed at 17 retailers as of October 29, 2026, with a 211% 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
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1537690621
Dimensions4.86 × 4.89 × 2.89 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Cloud, Crystal
Top View
4.86 mm4.89 mm0.42 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1537690621
Side View
Table 61.0%Crown 33.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 59.2%

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: $912 AUD|Low: $546 AUD|High: $1,795 AUD|Avg: $960 AUD|-4.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 29, 2026
Retailer 5$547 AUD
Retailer 4$638 AUD
Retailer 11$744 AUD
Retailer 12$782 AUD
Retailer 10$786 AUD
Retailer 1$912 AUD
Retailer 3$921 AUD
Retailer 8$1,010 AUD
Retailer 6$1,018 AUD
Retailer 9$1,029 AUD
Retailer 2$1,136 AUD
Retailer 7$1,705 AUD

21 data points across 12 retailers

17 retailers$547 AUD to $1,705 AUD

A
Cheapest Retailer
-
$547 AUD
₹36,628 INR
A
Retailer 2
-
$638 AUD
HK$3,500 HKD
View
A
Retailer 3
-
$744 AUD
View
A
Retailer 4
-
$782 AUD
SGD 742 SGD
View
A
Retailer 5
-
$786 AUD
$552 USD
View
Retailer 6
-
$814 AUD
$572 USD
View
Price last confirmed 26 days ago
Retailer 7
-
$884 AUD
$621 USD
View
Price last confirmed 30 days ago
A
Retailer 8
-
$912 AUD
£505 GBP
View
A
Retailer 9
-
$921 AUD
$647 USD
View
Retailer 10
-
$941 AUD
$661 USD
View
Price last confirmed 28 days ago
B+
Retailer 11
-
$1,010 AUD
€676 EUR
View
B+
Retailer 12
-
$1,018 AUD
$715 USD
View
B+
Retailer 13
-
$1,029 AUD
$723 USD
View
B+
Retailer 14
-
$1,136 AUD
ZAR 12,892 ZAR
View
Retailer 15
-
$1,225 AUD
View
Price last confirmed 26 days ago
B
Retailer 16
-
$1,705 AUD
£943 GBP
View
Most Expensive
NZ Jewellers
cf57c539-6933-4193-bf06-f1c5871f9122 · Oct 3
$2,555 AUD
$1,795 USD
View
Price last confirmed 27 days ago
16 more retailers have this diamond
Prices start from $547 AUDSave up to $1,157 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
$547 AUD