Round|Natural|GIA

1.20ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 2547966412

Certificate GIA 2547966412

Diamond specifications and retailer prices

From $4,940 AUD
As of November 5, 2026
Save $212 AUD (4%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $9,779 AUD at NZ Jewellers · As of September 25, 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 2547966412. Listed at 23 retailers as of November 5, 2026, with a relatively tight 4% 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

1.20
Carat
H
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 2547966412
Dimensions6.80 × 6.83 × 4.20 mm
L/W Ratio1.00
Top View
6.80 mm6.83 mm1.20 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2547966412
Side View
Table 58.0%Crown 35°Girdle: MED-STKPavilion 41°Culet: NoneDepth 61.5%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $4,940 AUD|Low: $3,144 AUD|High: $9,639 AUD|Avg: $5,934 AUD|+0.2%
Retailer 1
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
November 5, 2026
Retailer 3$3,144 AUD
Retailer 13$4,416 AUD
Retailer 1$4,940 AUD
Retailer 5$5,011 AUD
Retailer 4$5,127 AUD
Retailer 16$5,312 AUD
Retailer 10$5,352 AUD
Retailer 11$5,577 AUD
Retailer 6$5,768 AUD
Retailer 7$5,950 AUD
Retailer 8$5,989 AUD
Retailer 2$6,404 AUD
Retailer 12$6,475 AUD
Retailer 9$6,765 AUD
Retailer 14$9,304 AUD
Retailer 15$9,565 AUD

27 data points across 16 retailers

23 retailers$4,940 AUD to $5,152 AUD

Retailer 1
-
$3,144 AUD
Price last confirmed 24 days ago
Retailer 2
-
$4,192 AUD
View
Price last confirmed 13 days ago
Retailer 3
-
$4,416 AUD
View
Price last confirmed 13 days ago
B+
Retailer 4
-
$4,940 AUD
View
Retailer 5
-
$5,011 AUD
View
Price last confirmed 12 days ago
Retailer 6
-
$5,018 AUD
View
Price last confirmed 23 days ago
B+
Retailer 7
-
$5,152 AUD
View
Retailer 8
-
$5,312 AUD
View
Price last confirmed 11 days ago
Retailer 9
-
$5,338 AUD
View
Price last confirmed 13 days ago
Retailer 10
-
$5,555 AUD
View
Price last confirmed 28 days ago
Retailer 11
-
$5,555 AUD
View
Price last confirmed 26 days ago
Retailer 12
-
$5,577 AUD
View
Price last confirmed 12 days ago
Retailer 13
-
$5,613 AUD
View
Price last confirmed 40 days ago
Retailer 14
-
$5,768 AUD
View
Price last confirmed 13 days ago
Retailer 15
-
$5,950 AUD
View
Price last confirmed 30 days ago
Retailer 16
-
$5,989 AUD
View
Price last confirmed 13 days ago
Retailer 17
-
$6,404 AUD
View
Price last confirmed 13 days ago
Retailer 18
-
$6,475 AUD
View
Price last confirmed 13 days ago
Retailer 19
-
$6,477 AUD
View
Price last confirmed 40 days ago
Retailer 20
-
$6,765 AUD
View
Price last confirmed 11 days ago
Retailer 21
-
$9,304 AUD
View
Price last confirmed 12 days ago
Retailer 22
-
$9,565 AUD
View
Price last confirmed 13 days ago
Most Expensive
NZ Jewellers
ca5f900b-11a3-46c8-85ef-62cf814c45aa · Sep 25
$9,779 AUD
$6,719 USD
View
Price last confirmed 42 days ago
22 more retailers have this diamond
Prices start from $4,940 AUDSave up to $212 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
$4,940 AUD