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Heart|Natural|GIA

1.20ct J SI1 Heart Natural Diamond

GD • J/SI1 • GIA 6361749218

Certificate GIA 6361749218

Diamond specifications and retailer prices

From $3,109 AUD
As of November 7, 2026
Save $3,939 AUD (56%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $7,048 AUD at MOH London · As of November 2, 2026
View at MOH London

About this 1.2ct natural heart diamond

This 1.2ct natural heart sits in the classic one-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6361749218. Listed at 17 retailers as of November 2, 2026, with prices from $3,109 to $7,048, a $3,939 spread on the same certified stone. MOH London lists it at $7,048. 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
J
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6361749218
Dimensions6.14 × 5.81 × 3.95 mm
L/W Ratio1.06
Top View
6.14 mm5.81 mm1.20 ctJ / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6361749218
Side View
Table 59.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 68.0%

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 7
Current: $7,048 AUD|Low: $2,995 AUD|High: $7,133 AUD|Avg: $4,187 AUD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 7, 2026
Retailer 2$3,109 AUD
Retailer 12$3,292 AUD
Retailer 8$3,311 AUD
Retailer 4$3,515 AUD
Retailer 11$3,617 AUD
Retailer 9$3,644 AUD
Retailer 3$3,707 AUD
Retailer 10$3,713 AUD
Retailer 13$4,132 AUD
Retailer 5$4,506 AUD
Retailer 6$4,682 AUD
Retailer 7$4,909 AUD
MOH London$7,048 AUD

46 data points across 13 retailers

17 retailers$3,109 AUD to $7,048 AUD

B+
Cheapest Retailer
-
$3,109 AUD
B
Retailer 2
-
$3,275 AUD
View
B
Retailer 3
-
$3,275 AUD
View
B
Retailer 4
-
$3,292 AUD
View
B+
Retailer 5
-
$3,311 AUD
View
B
Retailer 6
-
$3,391 AUD
View
B
Retailer 7
-
$3,515 AUD
View
B
Retailer 8
-
$3,617 AUD
View
Retailer 9
-
$3,644 AUD
View
Price last confirmed 9 days ago
B
Retailer 10
-
$3,707 AUD
View
B
Retailer 11
-
$3,713 AUD
View
Final sale: no returns
B
Retailer 12
-
$4,103 AUD
View
B
Retailer 13
-
$4,132 AUD
View
Retailer 14
-
$4,506 AUD
View
Price last confirmed 31 days ago
B
Retailer 15
-
$4,682 AUD
View
B
Retailer 16
-
$4,909 AUD
View
Most Expensive
C
MOH London
D0F9EF9C1 · Nov 2
$7,048 AUD
£3,813 GBP
View
16 more retailers have this diamond
Prices start from $3,109 AUDSave up to $3,939 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 Heart
$3,109 AUD