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Oval|Natural|GIA

1.20ct J SI1 Oval Natural Diamond

EX • J/SI1 • GIA 1543029754

Certificate GIA 1543029754

Diamond specifications and retailer prices

From $1,895 AUD
HK$10,400 HKD
As of October 30, 2026
Save $4,461 AUD (70%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $6,355 AUD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.2ct natural oval diamond

This 1.2ct natural oval sits in the classic one-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1543029754. Listed at 10 retailers as of October 30, 2026, with prices from $1,895 to $6,355, a $4,461 spread on the same certified stone. NZ Jewellers lists it at $6,355. 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
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle35.13°
OriginNatural
Grading LabGIA
CertificateGIA 1543029754
Dimensions8.19 × 5.84 × 3.71 mm
L/W Ratio1.40
Key to symbols
Crystal, Knot, Feather, Needle
Top View
8.19 mm5.84 mm1.20 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1543029754
Side View
Table 60.0%CrownGirdle: STK-THKPavilion 35.13°Culet: NoneDepth 63.5%

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: Oct 30
Current: $6,355 AUD|Low: $1,895 AUD|High: $6,355 AUD|Avg: $3,253 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
October 29, 2026
Retailer 10$1,895 AUD
Retailer 11$2,507 AUD
Retailer 6$2,606 AUD
Retailer 12$2,649 AUD
Retailer 9$2,661 AUD
Retailer 7$2,726 AUD
Retailer 8$2,885 AUD
Retailer 5$3,577 AUD
Retailer 4$3,670 AUD
Retailer 3$3,888 AUD
Retailer 2$4,590 AUD
NZ Jewellers$6,355 AUD

31 data points across 12 retailers

10 retailers$1,895 AUD to $6,355 AUD

A
Cheapest Retailer
-
$1,895 AUD
HK$10,400 HKD
A
Retailer 2
-
$2,507 AUD
$1,761 USD
View
A
Retailer 3
-
$2,606 AUD
$1,831 USD
View
B+
Retailer 4
-
$2,649 AUD
$1,861 USD
View
Final sale: no returns
A
Retailer 5
-
$2,661 AUD
SGD 2,526 SGD
View
A
Retailer 6
-
$2,726 AUD
$1,915 USD
View
B+
Retailer 7
-
$2,885 AUD
$2,027 USD
View
B+
Retailer 8
-
$3,577 AUD
€2,393 EUR
View
B
Retailer 9
-
$4,590 AUD
£2,539 GBP
View
Most Expensive
B
NZ Jewellers
e8d40a08-bbda-461f-9049-c2ef64dd678a · Oct 30
$6,355 AUD
$4,465 USD
View
9 more retailers have this diamond
Prices start from $1,895 AUDSave up to $4,461 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 Oval
$1,895 AUD