CaratHunter
Plans
Round|Natural|GIA

1.23ct E SI1 Round Natural Diamond

EX • E/SI1 • GIA 1533621018

Certificate GIA 1533621018

Diamond specifications and retailer prices

From $7,234 AUD
As of November 4, 2026
Save $7,930 AUD (52%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $15,164 AUD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.23ct natural round diamond

This 1.23ct natural round sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1533621018. Listed at 10 retailers as of November 4, 2026, with prices from $7,234 to $15,164, a $7,930 spread on the same certified stone. NZ Jewellers lists it at $15,164. 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

1.23
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 1533621018
Dimensions6.83 × 6.77 × 4.26 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Cloud, Crystal
Top View
6.83 mm6.77 mm1.23 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1533621018
Side View
Table 58.0%Crown 35°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 62.7%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $15,164 AUD|Low: $7,234 AUD|High: $15,164 AUD|Avg: $9,579 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 11$7,234 AUD
Retailer 3$7,695 AUD
Retailer 9$8,214 AUD
Retailer 10$8,214 AUD
Retailer 2$8,585 AUD
Retailer 4$8,670 AUD
Retailer 8$8,694 AUD
Retailer 7$9,477 AUD
Retailer 5$9,828 AUD
Retailer 6$13,321 AUD
NZ Jewellers$15,164 AUD

27 data points across 11 retailers

10 retailers$7,234 AUD to $15,164 AUD

B+
Cheapest Retailer
-
$7,234 AUD
B+
Retailer 2
-
$8,214 AUD
View
B+
Retailer 3
-
$8,214 AUD
View
B+
Retailer 4
-
$8,585 AUD
View
B+
Retailer 5
-
$8,670 AUD
View
B
Retailer 6
-
$8,694 AUD
View
B
Retailer 7
-
$9,477 AUD
View
B
Retailer 8
-
$9,828 AUD
View
B
Retailer 9
-
$13,321 AUD
View
Most Expensive
B
NZ Jewellers
0c31a0e1-85f9-4a60-822a-9c707874e1ce · Nov 5
$15,164 AUD
$10,615 USD
View
9 more retailers have this diamond
Prices start from $7,234 AUDSave up to $7,930 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.

B+
1.23ct Round
$7,234 AUD