CaratHunter
Plans
Heart|Natural|GIA

1.20ct J SI1 Heart Natural Diamond

GD • J/SI1 • GIA 5376670316

Certificate GIA 5376670316

Diamond specifications and retailer prices

From $3,419 AUD
As of November 6, 2026
Save $4,656 AUD (58%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $8,075 AUD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

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 5376670316. Listed at 17 retailers as of November 5, 2026, with prices from $3,419 to $8,075, a $4,656 spread on the same certified stone. NZ Jewellers lists it at $8,075. 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
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 5376670316
Dimensions7.23 × 6.54 × 4.05 mm
L/W Ratio1.11
Top View
7.23 mm6.54 mm1.20 ctJ / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 5376670316
Side View
Table 60.0%CrownGirdle: MED-ETKPavilionCulet: NoneDepth 56.1%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $3,791 AUD|Low: $3,730 AUD|High: $7,655 AUD|Avg: $4,945 AUD|+0.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 7, 2026
Retailer 1$3,791 AUD
Retailer 9$4,151 AUD
Retailer 7$4,174 AUD
Retailer 6$4,184 AUD
Retailer 2$4,388 AUD
Retailer 8$4,969 AUD
Retailer 3$5,395 AUD
Retailer 4$5,657 AUD
Retailer 5$7,545 AUD

38 data points across 9 retailers

17 retailers$3,419 AUD to $8,075 AUD

B
Cheapest Retailer
-
$3,419 AUD
B
Retailer 2
-
$3,791 AUD
View
B
Retailer 3
-
$4,151 AUD
View
B
Retailer 4
-
$4,174 AUD
View
B
Retailer 5
-
$4,184 AUD
View
B
Retailer 6
-
$4,388 AUD
View
B
Retailer 7
-
$4,497 AUD
View
Retailer 8
-
$4,635 AUD
View
Price last confirmed 9 days ago
B
Retailer 9
-
$4,635 AUD
View
B
Retailer 10
-
$4,813 AUD
View
B
Retailer 11
-
$4,842 AUD
View
Retailer 12
-
$4,969 AUD
View
Price last confirmed 34 days ago
C
Retailer 13
-
$5,347 AUD
View
B
Retailer 14
-
$5,395 AUD
View
B
Retailer 15
-
$5,657 AUD
View
C
Retailer 16
-
$7,545 AUD
View
Most Expensive
C
NZ Jewellers
c66b0f12-fa59-4932-96c8-93ffe99f7b90 · Nov 5
$8,075 AUD
$5,548 USD
View
16 more retailers have this diamond
Prices start from $3,419 AUDSave up to $4,656 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
$3,419 AUD