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Round|Natural|GIA

1.20ct M SI1 Round Natural Diamond

EX • M/SI1 • GIA 1569139099

Certificate GIA 1569139099

Diamond specifications and retailer prices

From $2,406 AUD
As of November 4, 2026
Save $1,129 AUD (32%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $6,547 AUD at NZ Jewellers · As of October 11, 2026
View at NZ Jewellers

About this 1.2ct natural round diamond

This 1.2ct natural round sits in the classic one-carat band, graded M colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1569139099. Listed at 11 retailers as of November 3, 2026, with a 47% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.20
Carat
M
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 1569139099
Dimensions6.73 × 6.77 × 4.20 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Feather, Needle, Cloud
Top View
6.73 mm6.77 mm1.20 ctM / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1569139099
Side View
Table 58.0%Crown 36°GirdlePavilion 40.6°Culet: NoneDepth 62.1%

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: $2,553 AUD|Low: $2,406 AUD|High: $3,770 AUD|Avg: $2,977 AUD|-8.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 6$2,406 AUD
Retailer 1$2,553 AUD
Retailer 4$2,678 AUD
Retailer 3$2,791 AUD
Retailer 5$3,187 AUD
Retailer 2$3,534 AUD

36 data points across 6 retailers

11 retailers$2,406 AUD to $3,534 AUD

B+
Cheapest Retailer
-
$2,406 AUD
B+
Retailer 2
-
$2,553 AUD
View
B+
Retailer 3
-
$2,678 AUD
View
Retailer 4
-
$2,684 AUD
View
Price last confirmed 25 days ago
Retailer 5
-
$2,684 AUD
View
Price last confirmed 25 days ago
B+
Retailer 6
-
$2,791 AUD
View
Retailer 7
-
$2,854 AUD
View
Price last confirmed 38 days ago
Retailer 8
-
$3,097 AUD
View
Price last confirmed 25 days ago
Retailer 9
-
$3,187 AUD
View
Price last confirmed 11 days ago
B
Retailer 10
-
$3,534 AUD
View
Most Expensive
NZ Jewellers
c2482e4e-3761-4df1-ada2-f02b805ae319 · Oct 11
$6,547 AUD
$4,583 USD
View
Price last confirmed 26 days ago
10 more retailers have this diamond
Prices start from $2,406 AUDSave up to $1,129 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+
1.20ct Round
$2,406 AUD