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Round|Natural|GIA

1.20ct M SI1 Round Natural Diamond

EX • M/SI1 • GIA 6512270726

Certificate GIA 6512270726

Diamond specifications and retailer prices

From $1,846 AUD
As of November 6, 2026
Save $1,776 AUD (49%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $6,015 AUD at NZ Jewellers · As of October 23, 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 6512270726. Listed at 10 retailers as of November 6, 2026, with a 96% 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
FluorescenceFaint
Crown angle35°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 6512270726
Dimensions6.74 × 6.78 × 4.24 mm
L/W Ratio1.01
Star length50%
Lower girdle75%
Top View
6.74 mm6.78 mm1.20 ctM / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6512270726
Side View
Table 59.0%Crown 35°Girdle: THN-STKPavilion 41.4°Culet: NoneDepth 62.7%

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 6
Current: $6,015 AUD|Low: $1,846 AUD|High: $8,944 AUD|Avg: $3,589 AUD|-5.1%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 4$1,846 AUD
Retailer 8$2,100 AUD
Retailer 10$2,273 AUD
Retailer 9$2,393 AUD
Retailer 5$2,416 AUD
Retailer 11$2,727 AUD
Retailer 7$3,064 AUD
Retailer 6$3,280 AUD
Retailer 2$3,621 AUD
NZ Jewellers$6,015 AUD
Retailer 3$8,944 AUD

24 data points across 11 retailers

10 retailers$1,846 AUD to $3,621 AUD

A
Cheapest Retailer
-
$1,846 AUD
A
Retailer 2
-
$2,100 AUD
View
Final sale: no returns
B+
Retailer 3
-
$2,273 AUD
View
B+
Retailer 4
-
$2,393 AUD
View
B+
Retailer 5
-
$2,416 AUD
View
B+
Retailer 6
-
$2,727 AUD
View
B
Retailer 7
-
$3,064 AUD
View
B
Retailer 8
-
$3,280 AUD
View
B
Retailer 9
-
$3,621 AUD
View
Most Expensive
NZ Jewellers
bf1a6de8-6107-4d12-ae9c-81a5341c0c73 · Oct 23
$6,015 AUD
$4,211 USD
View
Price last confirmed 13 days ago
9 more retailers have this diamond
Prices start from $1,846 AUDSave up to $1,776 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.

A
1.20ct Round
$1,846 AUD