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Round|Natural|GIA

0.42ct E SI1 Round Natural Diamond

EX • E/SI1 • GIA 1508586417

Certificate GIA 1508586417

Diamond specifications and retailer prices

From $647 AUD
₹43,305 INR
As of October 29, 2026
Save $2,111 AUD (77%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $2,759 AUD at NZ Jewellers · As of October 30, 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 1508586417. Listed at 22 retailers as of October 29, 2026, with prices from $647 to $2,759, a $2,111 spread on the same certified stone. NZ Jewellers lists it at $2,759. 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
PolishVery Good
SymmetryExcellent
FluorescenceFaint
Crown angle34°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 1508586417
Dimensions4.80 × 4.82 × 2.96 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Key to symbols
Twinning Wisp, Crystal, Feather
Top View
4.80 mm4.82 mm0.42 ctE / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1508586417
Side View
Table 57.0%Crown 34°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 61.6%

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: $2,759 AUD|Low: $643 AUD|High: $2,759 AUD|Avg: $1,524 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 4$647 AUD
Retailer 8$947 AUD
Retailer 2$1,077 AUD
Retailer 3$1,187 AUD
Retailer 9$1,323 AUD
Retailer 6$1,362 AUD
Retailer 10$1,802 AUD
Retailer 7$2,035 AUD
Retailer 5$2,079 AUD
NZ Jewellers$2,759 AUD

32 data points across 10 retailers

22 retailers$647 AUD to $2,759 AUD

A
Cheapest Retailer
-
$647 AUD
₹43,305 INR
A
Retailer 2
-
$850 AUD
View
Retailer 3
-
$880 AUD
$618 USD
View
Price last confirmed 36 days ago
A
Retailer 4
-
$880 AUD
$618 USD
View
B+
Retailer 5
-
$916 AUD
SGD 870 SGD
View
B+
Retailer 6
-
$947 AUD
$665 USD
View
B+
Retailer 7
-
$948 AUD
$666 USD
View
B+
Retailer 8
-
$948 AUD
$666 USD
View
Retailer 9
-
$1,015 AUD
$713 USD
View
Price last confirmed 37 days ago
B+
Retailer 10
-
$1,067 AUD
$750 USD
View
B+
Retailer 11
-
$1,077 AUD
£596 GBP
View
B+
Retailer 12
-
$1,112 AUD
$781 USD
View
B+
Retailer 13
-
$1,187 AUD
€794 EUR
View
B+
Retailer 14
-
$1,215 AUD
$853 USD
View
Retailer 15
-
$1,323 AUD
View
Price last confirmed 25 days ago
B+
Retailer 16
-
$1,362 AUD
ZAR 15,454 ZAR
View
B
Retailer 17
-
$1,593 AUD
£881 GBP
View
Retailer 18
-
$1,802 AUD
£997 GBP
View
Price last confirmed 30 days ago
B
Retailer 19
-
$2,035 AUD
£1,126 GBP
View
B
Retailer 20
-
$2,079 AUD
£1,150 GBP
View
Retailer 21
-
$2,759 AUD
$1,938 USD
View
Price last confirmed 35 days ago
Most Expensive
B
NZ Jewellers
3385e125-9547-4617-846b-5ea2a2056a89 · Oct 30
$2,759 AUD
$1,938 USD
View
21 more retailers have this diamond
Prices start from $647 AUDSave up to $2,111 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
$647 AUD