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Round|Natural|GIA

1.20ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 2566395736

Certificate GIA 2566395736

Diamond specifications and retailer prices

From $2,189 AUD
SGD 2,078 SGD
As of October 31, 2026
Save $2,043 AUD (48%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $4,232 AUD at Wholesale Diamonds Direct · As of October 26, 2026
View at Wholesale Diamonds Direct

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 2566395736. Listed at 10 retailers as of October 26, 2026, with prices from $2,189 to $4,232, a $2,043 spread on the same certified stone. Wholesale Diamonds Direct lists it at $4,232. 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 angle36.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 2566395736
Dimensions6.72 × 4.24 × 4.24 mm
L/W Ratio1.58
Culet sizeNone
Top View
6.72 mm4.24 mm1.20 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2566395736
Side View
Table 57.0%Crown 36.5°Girdle: Slightly ThickPavilion 41°Culet: NoneDepth 62.9%

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 31
Current: $2,828 AUD|Low: $2,189 AUD|High: $4,397 AUD|Avg: $3,199 AUD|-1.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Wholesale Diamonds Direct
November 1, 2026
Retailer 6$2,189 AUD
Retailer 3$2,553 AUD
Retailer 2$2,797 AUD
Retailer 8$2,804 AUD
Retailer 4$2,819 AUD
Retailer 1$2,828 AUD
Retailer 7$3,326 AUD
Retailer 9$3,417 AUD
Retailer 5$3,926 AUD
Wholesale Diamonds Direct$4,232 AUD

35 data points across 10 retailers

10 retailers$2,189 AUD to $4,232 AUD

A
Cheapest Retailer
-
$2,189 AUD
SGD 2,078 SGD
A
Retailer 2
-
$2,553 AUD
$1,793 USD
View
A
Retailer 3
-
$2,797 AUD
$1,965 USD
View
A
Retailer 4
-
$2,804 AUD
SGD 2,662 SGD
View
A
Retailer 5
-
$2,819 AUD
$1,980 USD
View
A
Retailer 6
-
$2,828 AUD
£1,564 GBP
View
B+
Retailer 7
-
$3,326 AUD
$2,337 USD
View
B+
Retailer 8
-
$3,417 AUD
£1,890 GBP
View
B
Retailer 9
-
$3,926 AUD
$2,758 USD
View
Most Expensive
B+
Wholesale Diamonds Direct
571683449 · Oct 26
$4,232 AUD
$2,973 USD
View
9 more retailers have this diamond
Prices start from $2,189 AUDSave up to $2,043 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
$2,189 AUD