CaratHunter
Plans
Round|Natural|GIA

1.20ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 1529902177

Certificate GIA 1529902177

Diamond specifications and retailer prices

From $3,371 AUD
As of November 6, 2026
Save $5,723 AUD (63%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $9,093 AUD at NZ Jewellers · As of November 5, 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1529902177. Listed at 23 retailers as of November 5, 2026, with prices from $3,371 to $9,093, a $5,723 spread on the same certified stone. NZ Jewellers lists it at $9,093. 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
H
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 1529902177
Dimensions6.76 × 6.73 × 4.23 mm
L/W Ratio1.00
Star length55%
Lower girdle75%
Cert comments
Additional clouds are not shown. Pinpoints are not shown.
Key to symbols
Crystal, Feather, Cloud, Needle
Top View
6.76 mm6.73 mm1.20 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1529902177
Side View
Table 56.0%Crown 36.5°Girdle: STK-STKPavilion 40.6°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: $9,093 AUD|Low: $3,353 AUD|High: $9,093 AUD|Avg: $4,936 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
November 6, 2026
Retailer 6$3,371 AUD
Retailer 17$3,570 AUD
Retailer 22$3,858 AUD
Retailer 15$3,895 AUD
Retailer 18$4,162 AUD
Retailer 5$4,235 AUD
Retailer 11$4,242 AUD
Retailer 2$4,263 AUD
Retailer 10$4,331 AUD
Retailer 8$4,350 AUD
Retailer 9$4,350 AUD
Retailer 12$4,424 AUD
Retailer 7$4,557 AUD
Retailer 20$4,577 AUD
Retailer 19$4,697 AUD
Retailer 3$4,937 AUD
Retailer 14$5,018 AUD
Retailer 21$5,309 AUD
Retailer 13$6,736 AUD
Retailer 16$6,923 AUD
Retailer 4$7,254 AUD
NZ Jewellers$9,093 AUD

21 data points across 22 retailers

23 retailers$3,371 AUD to $9,093 AUD

A
Cheapest Retailer
-
$3,371 AUD
A
Retailer 2
-
$3,570 AUD
View
A
Retailer 3
-
$3,858 AUD
View
A
Retailer 4
-
$3,895 AUD
View
A
Retailer 5
-
$4,162 AUD
View
A
Retailer 6
-
$4,235 AUD
View
B+
Retailer 7
-
$4,242 AUD
View
B+
Retailer 8
-
$4,263 AUD
View
Final sale: no returns
B+
Retailer 9
-
$4,331 AUD
View
Retailer 10
-
$4,350 AUD
View
Price last confirmed 9 days ago
B+
Retailer 11
-
$4,350 AUD
View
B+
Retailer 12
-
$4,424 AUD
View
B+
Retailer 13
-
$4,557 AUD
View
B+
Retailer 14
-
$4,577 AUD
View
B+
Retailer 15
-
$4,697 AUD
View
Retailer 16
-
$4,855 AUD
View
Price last confirmed 34 days ago
B+
Retailer 17
-
$4,937 AUD
View
B+
Retailer 18
-
$5,018 AUD
View
B+
Retailer 19
-
$5,309 AUD
View
B
Retailer 20
-
$6,736 AUD
View
B
Retailer 21
-
$6,923 AUD
View
B
Retailer 22
-
$7,254 AUD
View
Most Expensive
B
NZ Jewellers
70207aa8-05a6-449f-be79-1473d28e1b34 · Nov 5
$9,093 AUD
$6,248 USD
View
22 more retailers have this diamond
Prices start from $3,371 AUDSave up to $5,723 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
$3,371 AUD