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Round|Natural|GIA

1.25ct I SI2 Round Natural Diamond

EX • I/SI2 • GIA 2554968005

Certificate GIA 2554968005

Diamond specifications and retailer prices

From $4,645 NZD
A$4,028 AUD
As of November 2, 2026
4 retailers carry this diamond
Most expensive: $10,367 NZD at NZ Jewellers · As of September 24, 2026
View at NZ Jewellers

About this 1.25ct natural round diamond

This 1.25ct natural round sits in the one-and-a-quarter to one-and-a-half carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2554968005. Listed at 4 retailers as of November 2, 2026. 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

1.25
Carat
I
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle35.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 2554968005
Dimensions6.85 × 6.81 × 4.30 mm
L/W Ratio1.01
Girdle conditionFaceted
Top View
6.85 mm6.81 mm1.25 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2554968005
Side View
Table 57.0%Crown 35.5°Girdle: Slightly ThickPavilion 41°Culet: NoneDepth 62.9%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 2
Current: $6,121 NZD|Low: $3,702 NZD|High: $8,842 NZD|Avg: $5,003 NZD
Retailer 1
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
October 5, 2026
Retailer 6$3,702 NZD
Retailer 11$3,809 NZD
Retailer 12$3,859 NZD
Retailer 2$3,902 NZD
Retailer 15$4,271 NZD
Retailer 3$4,436 NZD
Retailer 4$4,645 NZD
Retailer 10$4,646 NZD
Retailer 5$4,984 NZD
Retailer 7$5,041 NZD
Retailer 9$5,854 NZD
Retailer 8$5,908 NZD
Retailer 1$6,121 NZD
Retailer 14$7,326 NZD
Retailer 13$8,781 NZD

12 data points across 15 retailers

4 retailers

Retailer 1
-
$3,702 NZD
HK$16,300 HKD
Price last confirmed 57 days ago
Retailer 2
-
$4,436 NZD
$2,500 USD
View
Price last confirmed 37 days ago
A
Retailer 3
-
$4,645 NZD
A$4,028 AUD
View
Most Expensive
NZ Jewellers
546606c2-452f-4145-b796-905409c33598 · Sep 24
$10,367 NZD
$5,843 USD
View
Price last confirmed 38 days ago
3 more retailers have this diamond
Prices start from $4,645 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.

A
1.25ct Round
$4,645 NZD