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Round|Natural|GIA

1.23ct E SI1 Round Natural Diamond

EX • E/SI1 • GIA 6555589674

Certificate GIA 6555589674

Diamond specifications and retailer prices

From $7,182 AUD
As of November 4, 2026
Save $5,651 AUD (44%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $12,834 AUD at Wholesale Diamonds Direct · As of November 4, 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 E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6555589674. Listed at 13 retailers as of November 4, 2026, with prices from $7,182 to $12,834, a $5,651 spread on the same certified stone. Wholesale Diamonds Direct lists it at $12,834. 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
FluorescenceFaint
Crown angle36.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 6555589674
Dimensions6.82 × 6.86 × 4.28 mm
L/W Ratio1.01
Girdle conditionMedium
Key to symbols
Crystal, Twinning Wisp
Top View
6.82 mm6.86 mm1.23 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6555589674
Side View
Table 56.0%Crown 36.5°Girdle: MediumPavilion 40.6°Culet: NoneDepth 62.5%

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: $11,091 AUD|Low: $7,182 AUD|High: $12,834 AUD|Avg: $9,126 AUD|+3.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Wholesale Diamonds Direct
November 5, 2026
Retailer 2$7,182 AUD
Retailer 12$7,692 AUD
Retailer 4$8,242 AUD
Retailer 6$8,577 AUD
Retailer 10$8,605 AUD
Retailer 8$8,717 AUD
Retailer 5$9,057 AUD
Retailer 3$9,185 AUD
Retailer 7$9,185 AUD
Retailer 11$9,312 AUD
Retailer 9$9,500 AUD
Retailer 1$11,091 AUD
Wholesale Diamonds Direct$12,834 AUD

43 data points across 13 retailers

13 retailers$7,182 AUD to $12,834 AUD

B+
Cheapest Retailer
-
$7,182 AUD
B+
Retailer 2
-
$7,692 AUD
View
B+
Retailer 3
-
$8,242 AUD
View
B+
Retailer 4
-
$8,577 AUD
View
B
Retailer 5
-
$8,605 AUD
View
B
Retailer 6
-
$8,717 AUD
View
B
Retailer 7
-
$9,057 AUD
View
B
Retailer 8
-
$9,185 AUD
View
B
Retailer 9
-
$9,185 AUD
View
B
Retailer 10
-
$9,312 AUD
View
B
Retailer 11
-
$9,500 AUD
View
B
Retailer 12
-
$11,091 AUD
View
Most Expensive
B
Wholesale Diamonds Direct
273575981 · Nov 4
$12,834 AUD
$8,984 USD
View
12 more retailers have this diamond
Prices start from $7,182 AUDSave up to $5,651 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
$7,182 AUD