CaratHunter
Plans
Round|Natural|GIA

1.20ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 1553140319

Certificate GIA 1553140319

Diamond specifications and retailer prices

From $2,682 AUD
As of November 6, 2026
Save $3,493 AUD (57%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $7,465 AUD at NZ Jewellers · As of October 3, 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 J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1553140319. Listed at 20 retailers as of November 4, 2026, with a 130% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 1553140319
Dimensions6.81 × 6.87 × 4.12 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Crystal, Cloud, Cavity, Needle
Top View
6.81 mm6.87 mm1.20 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1553140319
Side View
Table 62.0%Crown 33°Girdle: Slightly ThickPavilion 41°Culet: NoneDepth 60.2%

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 6
Current: $2,791 AUD|Low: $2,682 AUD|High: $6,330 AUD|Avg: $3,936 AUD|-3.2%
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
November 6, 2026
Retailer 12$2,682 AUD
Retailer 1$2,791 AUD
Retailer 10$3,128 AUD
Retailer 2$3,260 AUD
Retailer 13$3,328 AUD
Retailer 4$3,639 AUD
Retailer 7$3,717 AUD
Retailer 6$3,730 AUD
Retailer 3$3,737 AUD
Retailer 9$4,312 AUD
Retailer 8$4,387 AUD
Retailer 5$4,395 AUD
Retailer 11$6,175 AUD

32 data points across 13 retailers

20 retailers$2,682 AUD to $6,175 AUD

A
Cheapest Retailer
-
$2,682 AUD
A
Retailer 2
-
$2,791 AUD
View
A
Retailer 3
-
$3,128 AUD
View
B+
Retailer 4
-
$3,260 AUD
View
Final sale: no returns
B+
Retailer 5
-
$3,328 AUD
View
B+
Retailer 6
-
$3,349 AUD
View
B+
Retailer 7
-
$3,355 AUD
View
Retailer 8
-
$3,570 AUD
View
Price last confirmed 40 days ago
B+
Retailer 9
-
$3,639 AUD
View
B+
Retailer 10
-
$3,717 AUD
View
B+
Retailer 11
-
$3,730 AUD
View
Retailer 12
-
$3,735 AUD
View
Price last confirmed 39 days ago
B+
Retailer 13
-
$3,737 AUD
View
Retailer 14
-
$4,120 AUD
View
Price last confirmed 39 days ago
B+
Retailer 15
-
$4,312 AUD
View
B+
Retailer 16
-
$4,387 AUD
View
Retailer 17
-
$4,395 AUD
View
Price last confirmed 31 days ago
B
Retailer 18
-
$6,175 AUD
View
Retailer 19
-
$7,465 AUD
View
Price last confirmed 40 days ago
Most Expensive
NZ Jewellers
8682ebd1-3440-4309-9dfb-944ef4ce9066 · Oct 3
$7,465 AUD
$5,129 USD
View
Price last confirmed 34 days ago
19 more retailers have this diamond
Prices start from $2,682 AUDSave up to $3,493 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
$2,682 AUD