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Round|Natural|GIA

1.23ct G SI1 Round Natural Diamond

EX • G/SI1 • GIA 2557335290

Certificate GIA 2557335290

Diamond specifications and retailer prices

From $7,483 NZD
As of November 4, 2026
Save $5,868 NZD (44%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $13,351 NZD 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 $7,483 to $13,351, a $5,868 spread on the same certified stone. Wholesale Diamonds Direct lists it at $13,351. 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: $9,301 NZD|Low: $8,100 NZD|High: $11,641 NZD|Avg: $9,589 NZD|-0.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 7, 2026
Retailer 6$8,100 NZD
Retailer 7$8,826 NZD
Retailer 5$9,081 NZD
Retailer 1$9,301 NZD
Retailer 4$9,759 NZD
Retailer 3$10,378 NZD
Retailer 2$11,556 NZD

42 data points across 7 retailers

14 retailers$7,483 NZD to $13,351 NZD

B+
Cheapest Retailer
-
$7,483 NZD
B+
Retailer 2
-
$8,100 NZD
View
B+
Retailer 3
-
$8,826 NZD
View
B
Retailer 4
-
$9,048 NZD
View
B
Retailer 5
-
$9,081 NZD
View
B+
Retailer 6
-
$9,301 NZD
View
B
Retailer 7
-
$9,633 NZD
View
B
Retailer 8
-
$9,633 NZD
View
B
Retailer 9
-
$9,730 NZD
View
B
Retailer 10
-
$9,759 NZD
View
B
Retailer 11
-
$9,958 NZD
View
B
Retailer 12
-
$10,378 NZD
View
B
Retailer 13
-
$11,556 NZD
View
Most Expensive
B
Wholesale Diamonds Direct
246422210 · Nov 6
$13,351 NZD
$7,401 USD
View
13 more retailers have this diamond
Prices start from $7,483 NZDSave up to $5,868 NZD

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
$7,483 NZD