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Round|Natural|GIA

1.30ct M SI1 Round Natural Diamond

EX • M/SI1 • GIA 2245008318

Certificate GIA 2245008318

Diamond specifications and retailer prices

From $2,254 NZD
As of November 1, 2026
Save $1,002 NZD (31%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $3,255 NZD at Brilliant Earth · As of November 2, 2026
View at Brilliant Earth

About this 1.3ct natural round diamond

This 1.3ct natural round sits in the one-and-a-quarter to one-and-a-half carat band, graded M colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2245008318. Listed at 4 retailers as of November 1, 2026, with prices from $2,254 to $3,255, a $1,002 spread on the same certified stone. Brilliant Earth lists it at $3,255. 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

1.30
Carat
M
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 2245008318
Dimensions7.02 × 7.07 × 4.26 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Crystal, Cloud, Feather, Needle
Top View
7.02 mm7.07 mm1.30 ctM / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2245008318
Side View
Table 59.0%Crown 33.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 60.5%

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: Nov 1
Current: $3,255 NZD|Low: $2,231 NZD|High: $4,842 NZD|Avg: $3,260 NZD|-2.1%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
October 31, 2026
Retailer 2$2,254 NZD
Retailer 3$2,768 NZD
Retailer 4$2,779 NZD
Brilliant Earth$3,255 NZD
Retailer 5$4,842 NZD

14 data points across 5 retailers

4 retailers$2,254 NZD to $3,255 NZD

A
Cheapest Retailer
-
$2,254 NZD
A
Retailer 2
-
$2,768 NZD
View
B+
Retailer 3
-
$2,779 NZD
View
Final sale: no returns
Most Expensive
B+
Brilliant Earth
21531864A · Nov 2
$3,255 NZD
$1,830 USD
View
3 more retailers have this diamond
Prices start from $2,254 NZDSave up to $1,002 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
1.30ct Round
$2,254 NZD