CaratHunter
Plans
Round|Natural|GIA

1.20ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 5563366918

Certificate GIA 5563366918

Diamond specifications and retailer prices

From $3,415 AUD
$2,399 USD
As of October 31, 2026
Save $5,091 AUD (60%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $8,506 AUD at NZ Jewellers · As of October 27, 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 5563366918. Listed at 20 retailers as of October 27, 2026, with prices from $3,415 to $8,506, a $5,091 spread on the same certified stone. NZ Jewellers lists it at $8,506. 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 angle35.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 5563366918
Dimensions6.76 × 6.71 × 4.24 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Crystal, Cloud, Feather, Needle
Top View
6.76 mm6.71 mm1.20 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5563366918
Side View
Table 58.0%Crown 35.5°Girdle: Med. - Sli. ThickPavilion 41.2°Culet: NDepth 62.9%

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: Oct 31
Current: $8,506 AUD|Low: $3,415 AUD|High: $8,577 AUD|Avg: $4,508 AUD|-0.8%
NZ Jewellers
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
Retailer 18
Retailer 19
November 1, 2026
Retailer 11$3,415 AUD
Retailer 18$3,644 AUD
Retailer 19$3,701 AUD
Retailer 7$3,755 AUD
Retailer 5$3,851 AUD
Retailer 2$3,861 AUD
Retailer 8$3,986 AUD
Retailer 13$4,069 AUD
Retailer 15$4,069 AUD
Retailer 9$4,143 AUD
Retailer 16$4,225 AUD
Retailer 6$4,271 AUD
Retailer 12$4,324 AUD
Retailer 14$4,383 AUD
Retailer 3$4,695 AUD
Retailer 17$4,756 AUD
Retailer 4$4,955 AUD
Retailer 10$7,167 AUD
NZ Jewellers$8,506 AUD

20 data points across 19 retailers

20 retailers$3,415 AUD to $8,506 AUD

B+
Cheapest Retailer
-
$3,415 AUD
$2,399 USD
B+
Retailer 2
-
$3,644 AUD
$2,560 USD
View
B+
Retailer 3
-
$3,701 AUD
$2,600 USD
View
B+
Retailer 4
-
$3,755 AUD
$2,638 USD
View
Final sale: no returns
B+
Retailer 5
-
$3,851 AUD
$2,705 USD
View
B+
Retailer 6
-
$3,861 AUD
£2,136 GBP
View
B+
Retailer 7
-
$3,986 AUD
$2,800 USD
View
B+
Retailer 8
-
$4,069 AUD
$2,858 USD
View
B+
Retailer 9
-
$4,069 AUD
$2,858 USD
View
B
Retailer 10
-
$4,143 AUD
$2,910 USD
View
B+
Retailer 11
-
$4,225 AUD
$2,968 USD
View
B+
Retailer 12
-
$4,271 AUD
$3,000 USD
View
B+
Retailer 13
-
$4,324 AUD
£2,392 GBP
View
B
Retailer 14
-
$4,383 AUD
$3,079 USD
View
Retailer 15
-
$4,634 AUD
View
Price last confirmed 24 days ago
B
Retailer 16
-
$4,695 AUD
$3,298 USD
View
B
Retailer 17
-
$4,756 AUD
€3,182 EUR
View
B
Retailer 18
-
$4,955 AUD
ZAR 56,224 ZAR
View
B
Retailer 19
-
$7,167 AUD
£3,964 GBP
View
Most Expensive
C
NZ Jewellers
b2f06508-a94f-49b8-95ab-fca17bc7698d · Oct 27
$8,506 AUD
$5,975 USD
View
19 more retailers have this diamond
Prices start from $3,415 AUDSave up to $5,091 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 Round
$3,415 AUD