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Round|Natural|GIA

1.20ct G SI1 Round Natural Diamond

EX • G/SI1 • GIA 1559756383

Certificate GIA 1559756383

Diamond specifications and retailer prices

From $3,361 AUD
SGD 3,190 SGD
As of October 31, 2026
Save $3,533 AUD (51%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $6,893 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1559756383. Listed at 12 retailers as of October 26, 2026, with prices from $3,361 to $6,893, a $3,533 spread on the same certified stone. Wholesale Diamonds Direct lists it at $6,893. 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
G
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 1559756383
Dimensions6.71 × 4.25 × 4.25 mm
L/W Ratio1.58
Culet sizeNone
Top View
6.71 mm4.25 mm1.20 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1559756383
Side View
Table 55.0%Crown 36.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 63.0%

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: $5,118 AUD|Low: $3,361 AUD|High: $7,307 AUD|Avg: $5,139 AUD|-3.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Wholesale Diamonds Direct
October 29, 2026
Retailer 7$3,361 AUD
Retailer 6$4,064 AUD
Retailer 4$4,114 AUD
Retailer 3$4,457 AUD
Retailer 10$4,595 AUD
Retailer 8$4,641 AUD
Retailer 9$5,043 AUD
Retailer 1$5,118 AUD
Retailer 5$5,225 AUD
Retailer 2$6,435 AUD
Wholesale Diamonds Direct$6,893 AUD

43 data points across 11 retailers

12 retailers$3,361 AUD to $6,893 AUD

A
Cheapest Retailer
-
$3,361 AUD
SGD 3,190 SGD
A
Retailer 2
-
$4,064 AUD
$2,855 USD
View
A
Retailer 3
-
$4,114 AUD
$2,890 USD
View
A
Retailer 4
-
$4,457 AUD
£2,465 GBP
View
A
Retailer 5
-
$4,595 AUD
SGD 4,362 SGD
View
A
Retailer 6
-
$4,641 AUD
$3,260 USD
View
B+
Retailer 7
-
$5,043 AUD
$3,542 USD
View
B+
Retailer 8
-
$5,118 AUD
€3,424 EUR
View
B+
Retailer 9
-
$5,225 AUD
£2,890 GBP
View
B+
Retailer 10
-
$5,689 AUD
$3,996 USD
View
B+
Retailer 11
-
$6,435 AUD
$4,520 USD
View
Most Expensive
B+
Wholesale Diamonds Direct
262900585 · Oct 26
$6,893 AUD
$4,842 USD
View
11 more retailers have this diamond
Prices start from $3,361 AUDSave up to $3,533 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
$3,361 AUD