CaratHunter
Plans
Round|Natural|GIA

1.23ct G SI1 Round Natural Diamond

EX • G/SI1 • GIA 2557335290

Certificate GIA 2557335290

Diamond specifications and retailer prices

From $6,037 AUD
As of November 4, 2026
Save $4,734 AUD (44%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $10,771 AUD at Wholesale Diamonds Direct · As of November 6, 2026
View at Wholesale Diamonds Direct

About this 1.23ct natural round diamond

This 1.23ct natural round sits in the classic one-carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2557335290. Listed at 14 retailers as of November 4, 2026, with prices from $6,037 to $10,771, a $4,734 spread on the same certified stone. Wholesale Diamonds Direct lists it at $10,771. 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
G
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 2557335290
Dimensions6.83 × 6.86 × 4.24 mm
L/W Ratio1.00
Culet sizeNone
Key to symbols
Crystal, Needle
Top View
6.83 mm6.86 mm1.23 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2557335290
Side View
Table 59.0%Crown 36°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.0%

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: $9,323 AUD|Low: $6,535 AUD|High: $9,392 AUD|Avg: $7,736 AUD|+1.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 5, 2026
Retailer 6$6,535 AUD
Retailer 7$7,121 AUD
Retailer 5$7,326 AUD
Retailer 4$7,504 AUD
Retailer 3$7,874 AUD
Retailer 2$8,373 AUD
Retailer 1$9,323 AUD

41 data points across 7 retailers

14 retailers$6,037 AUD to $10,771 AUD

B+
Cheapest Retailer
-
$6,037 AUD
B+
Retailer 2
-
$6,535 AUD
View
B+
Retailer 3
-
$7,121 AUD
View
B
Retailer 4
-
$7,300 AUD
View
B
Retailer 5
-
$7,326 AUD
View
B+
Retailer 6
-
$7,504 AUD
View
B
Retailer 7
-
$7,772 AUD
View
B
Retailer 8
-
$7,772 AUD
View
B
Retailer 9
-
$7,850 AUD
View
B
Retailer 10
-
$7,874 AUD
View
B
Retailer 11
-
$8,034 AUD
View
B
Retailer 12
-
$8,373 AUD
View
B
Retailer 13
-
$9,323 AUD
View
Most Expensive
B
Wholesale Diamonds Direct
246422210 · Nov 6
$10,771 AUD
$7,401 USD
View
13 more retailers have this diamond
Prices start from $6,037 AUDSave up to $4,734 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
$6,037 AUD