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Round|Natural|GIA

1.20ct M SI1 Round Natural Diamond

EX • M/SI1 • GIA 1555088566

Certificate GIA 1555088566

Diamond specifications and retailer prices

From $2,821 AUD
As of November 2, 2026
Save $4,141 AUD (59%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $6,963 AUD at NZ Jewellers · As of November 2, 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 1555088566. Listed at 6 retailers as of November 2, 2026, with prices from $2,821 to $6,963, a $4,141 spread on the same certified stone. NZ Jewellers lists it at $6,963. 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
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1555088566
Dimensions6.72 × 6.79 × 4.22 mm
L/W Ratio1.01
Girdle conditionSlightly Thick
Key to symbols
Crystal, Cloud, Needle, Indented Natural
Top View
6.72 mm6.79 mm1.20 ctM / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 1555088566
Side View
Table 57.0%Crown 36°GirdlePavilion 40.8°CuletDepth 62.4%

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 2
Current: $6,963 AUD|Low: $2,821 AUD|High: $6,963 AUD|Avg: $3,782 AUD|+13.5%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 3$2,821 AUD
Retailer 6$2,854 AUD
Retailer 7$2,881 AUD
Retailer 5$2,907 AUD
Retailer 4$2,987 AUD
Retailer 2$3,196 AUD
Retailer 9$4,141 AUD
Retailer 8$5,058 AUD
NZ Jewellers$6,963 AUD

31 data points across 9 retailers

6 retailers$2,821 AUD to $6,963 AUD

B+
Cheapest Retailer
-
$2,821 AUD
B+
Retailer 2
-
$2,854 AUD
View
B
Retailer 3
-
$2,907 AUD
View
B
Retailer 4
-
$2,987 AUD
View
B
Retailer 5
-
$3,196 AUD
View
Most Expensive
C
NZ Jewellers
098a6ff9-c6fb-4ece-b88b-436af5113d95 · Nov 2
$6,963 AUD
$4,874 USD
View
5 more retailers have this diamond
Prices start from $2,821 AUDSave up to $4,141 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
$2,821 AUD