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Round|Natural|GIA

1.23ct I SI2 Round Natural Diamond

EX • I/SI2 • GIA 3495150691

Certificate GIA 3495150691

Diamond specifications and retailer prices

From $2,981 AUD
$2,094 USD
As of October 31, 2026
Save $4,126 AUD (58%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $7,107 AUD at NZ Jewellers · As of October 30, 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 3495150691. Listed at 16 retailers as of October 30, 2026, with prices from $2,981 to $7,107, a $4,126 spread on the same certified stone. NZ Jewellers lists it at $7,107. 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
I
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 3495150691
Dimensions6.87 × 6.85 × 4.24 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Top View
6.87 mm6.85 mm1.23 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 3495150691
Side View
Table 58.0%Crown 35°Girdle: MED-STKPavilion 41°Culet: NoneDepth 61.7%

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: $7,107 AUD|Low: $2,876 AUD|High: $7,107 AUD|Avg: $3,897 AUD
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
Retailer 16
October 30, 2026
Retailer 14$2,981 AUD
Retailer 15$3,069 AUD
Retailer 12$3,118 AUD
Retailer 13$3,136 AUD
Retailer 7$3,166 AUD
Retailer 16$3,264 AUD
Retailer 4$3,400 AUD
Retailer 6$3,400 AUD
Retailer 3$3,556 AUD
Retailer 8$3,598 AUD
Retailer 9$3,610 AUD
Retailer 11$3,896 AUD
Retailer 5$3,922 AUD
Retailer 2$4,244 AUD
Retailer 10$5,986 AUD
NZ Jewellers$7,107 AUD

38 data points across 16 retailers

16 retailers$2,981 AUD to $7,107 AUD

A
Cheapest Retailer
-
$2,981 AUD
$2,094 USD
A
Retailer 2
-
$3,069 AUD
$2,156 USD
View
A
Retailer 3
-
$3,118 AUD
$2,190 USD
View
Retailer 4
-
$3,132 AUD
$2,200 USD
View
Price last confirmed 38 days ago
A
Retailer 5
-
$3,136 AUD
$2,203 USD
View
Final sale: no returns
Retailer 6
-
$3,264 AUD
£1,806 GBP
View
Price last confirmed 32 days ago
A
Retailer 7
-
$3,400 AUD
$2,388 USD
View
A
Retailer 8
-
$3,400 AUD
$2,388 USD
View
A
Retailer 9
-
$3,556 AUD
$2,498 USD
View
A
Retailer 10
-
$3,598 AUD
$2,527 USD
View
A
Retailer 11
-
$3,610 AUD
£1,997 GBP
View
A
Retailer 12
-
$3,896 AUD
£2,155 GBP
View
A
Retailer 13
-
$3,922 AUD
$2,755 USD
View
B+
Retailer 14
-
$4,244 AUD
€2,839 EUR
View
B+
Retailer 15
-
$5,986 AUD
£3,311 GBP
View
Most Expensive
B
NZ Jewellers
236d964f-82f4-49e9-ab05-5e8201d80b69 · Oct 30
$7,107 AUD
$4,992 USD
View
15 more retailers have this diamond
Prices start from $2,981 AUDSave up to $4,126 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
1.23ct Round
$2,981 AUD