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Round|Natural|GIA

1.20ct F SI2 Round Natural Diamond

VG • F/SI2 • GIA 2426381260

Certificate GIA 2426381260

Diamond specifications and retailer prices

From $3,717 AUD
HK$20,400 HKD
As of November 1, 2026
Save $8,216 AUD (69%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $11,933 AUD at Diamond Quarter · As of October 31, 2026
View at Diamond Quarter

About this 1.2ct natural round diamond

This 1.2ct natural round sits in the classic one-carat band, graded F colour (colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by GIA 2426381260. Listed at 18 retailers as of October 31, 2026, with prices from $3,717 to $11,933, a $8,216 spread on the same certified stone. Diamond Quarter lists it at $11,933. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.20
Carat
F
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle38°
Pavilion angle40.2°
OriginNatural
Grading LabGIA
CertificateGIA 2426381260
Dimensions6.68 × 6.60 × 4.25 mm
L/W Ratio1.01
Top View
6.68 mm6.60 mm1.20 ctF / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2426381260
Side View
Table 57.0%Crown 38°Girdle: MED-THKPavilion 40.2°Culet: NoneDepth 64.1%

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 1
Current: $5,298 AUD|Low: $3,681 AUD|High: $9,289 AUD|Avg: $5,250 AUD|-0.0%
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
Retailer 17
November 2, 2026
Retailer 13$3,717 AUD
Retailer 14$3,936 AUD
Retailer 2$4,050 AUD
Retailer 17$4,175 AUD
Retailer 3$4,286 AUD
Retailer 8$4,524 AUD
Retailer 11$4,539 AUD
Retailer 15$4,698 AUD
Retailer 5$5,139 AUD
Retailer 16$5,139 AUD
Retailer 10$5,187 AUD
Retailer 9$5,219 AUD
Retailer 1$5,298 AUD
Retailer 6$5,310 AUD
Retailer 4$5,656 AUD
Retailer 12$8,351 AUD
Retailer 7$8,700 AUD

38 data points across 17 retailers

18 retailers$3,717 AUD to $11,933 AUD

A
Cheapest Retailer
-
$3,717 AUD
HK$20,400 HKD
A
Retailer 2
-
$3,936 AUD
$2,765 USD
View
A
Retailer 3
-
$4,050 AUD
$2,845 USD
View
A
Retailer 4
-
$4,175 AUD
$2,933 USD
View
Final sale: no returns
B+
Retailer 5
-
$4,286 AUD
$3,011 USD
View
B+
Retailer 6
-
$4,524 AUD
$3,178 USD
View
B+
Retailer 7
-
$4,539 AUD
£2,511 GBP
View
B+
Retailer 8
-
$4,698 AUD
$3,300 USD
View
B+
Retailer 9
-
$5,139 AUD
$3,610 USD
View
B+
Retailer 10
-
$5,139 AUD
$3,610 USD
View
B+
Retailer 11
-
$5,187 AUD
£2,869 GBP
View
B+
Retailer 12
-
$5,219 AUD
$3,666 USD
View
B+
Retailer 13
-
$5,298 AUD
€3,544 EUR
View
B+
Retailer 14
-
$5,310 AUD
$3,730 USD
View
Retailer 15
-
$5,656 AUD
$3,973 USD
View
Price last confirmed 10 days ago
B
Retailer 16
-
$8,351 AUD
£4,619 GBP
View
B
Retailer 17
-
$8,700 AUD
$6,111 USD
View
Most Expensive
B
Diamond Quarter
1.2SI2F2460BD50N · Oct 31
$11,933 AUD
£6,600 GBP
View
17 more retailers have this diamond
Prices start from $3,717 AUDSave up to $8,216 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
$3,717 AUD