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Round|Natural|GIA

1.23ct D SI2 Round Natural Diamond

EX • D/SI2 • GIA 6555769796

Certificate GIA 6555769796

Diamond specifications and retailer prices

From $4,644 AUD
$3,262 USD
As of October 30, 2026
Save $4,469 AUD (49%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $9,112 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 D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6555769796. Listed at 12 retailers as of October 30, 2026, with prices from $4,644 to $9,112, a $4,469 spread on the same certified stone. NZ Jewellers lists it at $9,112. 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
D
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle36.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6555769796
Dimensions6.82 × 6.76 × 4.27 mm
L/W Ratio1.01
Girdle conditionFaceted
Top View
6.82 mm6.76 mm1.23 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 6555769796
Side View
Table 56.0%Crown 36.5°Girdle: MED-STKPavilion 40.8°CuletDepth 62.8%

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 30
Current: $9,112 AUD|Low: $4,509 AUD|High: $9,283 AUD|Avg: $6,013 AUD|-1.8%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 30, 2026
Retailer 12$4,644 AUD
Retailer 3$4,827 AUD
Retailer 4$4,927 AUD
Retailer 8$5,230 AUD
Retailer 10$5,230 AUD
Retailer 9$5,432 AUD
Retailer 5$5,433 AUD
Retailer 7$6,030 AUD
Retailer 11$6,035 AUD
Retailer 2$6,124 AUD
Retailer 6$8,794 AUD
NZ Jewellers$9,112 AUD

40 data points across 12 retailers

12 retailers$4,644 AUD to $9,112 AUD

A
Cheapest Retailer
-
$4,644 AUD
$3,262 USD
A
Retailer 2
-
$4,827 AUD
$3,391 USD
View
Final sale: no returns
B+
Retailer 3
-
$5,230 AUD
$3,674 USD
View
B+
Retailer 4
-
$5,230 AUD
$3,674 USD
View
B+
Retailer 5
-
$5,432 AUD
$3,816 USD
View
B+
Retailer 6
-
$5,433 AUD
£3,005 GBP
View
B+
Retailer 7
-
$6,030 AUD
£3,335 GBP
View
B+
Retailer 8
-
$6,035 AUD
$4,239 USD
View
B+
Retailer 9
-
$6,124 AUD
€4,097 EUR
View
Retailer 10
-
$6,261 AUD
$4,398 USD
View
Price last confirmed 64 days ago
B
Retailer 11
-
$8,794 AUD
£4,864 GBP
View
Most Expensive
B
NZ Jewellers
fa709ad6-558f-4b7a-98ff-660f780ca4b6 · Oct 30
$9,112 AUD
$6,401 USD
View
11 more retailers have this diamond
Prices start from $4,644 AUDSave up to $4,469 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
$4,644 AUD