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Round|Natural|GIA

1.30ct M SI1 Round Natural Diamond

EX • M/SI1 • GIA 2556088072

Certificate GIA 2556088072

Diamond specifications and retailer prices

From $2,728 AUD
As of November 5, 2026
Save $406 AUD (13%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $3,134 AUD at Diamonds Direct · As of November 3, 2026
View at Diamonds Direct

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 2556088072. Listed at 5 retailers as of November 3, 2026, with a relatively tight 15% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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
SymmetryVery Good
FluorescenceNone
Crown angle35.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 2556088072
Dimensions6.86 × 6.93 × 4.36 mm
L/W Ratio1.01
Girdle conditionSlightly Thick
Key to symbols
Crystal, Needle
Top View
6.86 mm6.93 mm1.30 ctM / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2556088072
Side View
Table 56.0%Crown 35.5°GirdlePavilion 40.8°CuletDepth 63.3%

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 5
Current: $3,134 AUD|Low: $2,728 AUD|High: $5,027 AUD|Avg: $3,350 AUD
Diamonds Direct
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 3, 2026
Retailer 5$2,728 AUD
Retailer 2$2,768 AUD
Retailer 3$2,796 AUD
Retailer 4$2,857 AUD
Diamonds Direct$3,134 AUD
Retailer 7$3,723 AUD
Retailer 6$5,027 AUD

25 data points across 7 retailers

5 retailers$2,728 AUD to $3,134 AUD

B+
Cheapest Retailer
-
$2,728 AUD
B+
Retailer 2
-
$2,768 AUD
View
B+
Retailer 3
-
$2,796 AUD
View
B+
Retailer 4
-
$2,857 AUD
View
Most Expensive
B
Diamonds Direct
842050 · Nov 3
$3,134 AUD
$2,194 USD
View
4 more retailers have this diamond
Prices start from $2,728 AUDSave up to $406 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+
1.30ct Round
$2,728 AUD