Round|Natural|GIA

1.20ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 6541062520

Certificate GIA 6541062520

Diamond specifications and retailer prices

From $5,088 AUD
SGD 4,830 SGD
As of October 31, 2026
Save $249 AUD (5%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $10,021 AUD at NZ Jewellers · As of September 28, 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 D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6541062520. Listed at 18 retailers as of October 30, 2026, with a relatively tight 5% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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
D
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
Crown angle33°
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 6541062520
Dimensions6.87 × 6.84 × 4.17 mm
L/W Ratio1.00
Star length50%
Lower girdle75%
Top View
6.87 mm6.84 mm1.20 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 6541062520
Side View
Table 61.0%Crown 33°Girdle: MED-STKPavilion 41.8°Culet: NoneDepth 60.9%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 31
Current: $4,593 AUD|Low: $4,355 AUD|High: $9,734 AUD|Avg: $6,011 AUD|-1.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 19, 2026
Retailer 2$4,355 AUD
Retailer 1$4,593 AUD
Retailer 10$5,088 AUD
Retailer 9$5,152 AUD
Retailer 11$5,307 AUD
Retailer 3$5,337 AUD
Retailer 4$5,339 AUD
Retailer 5$5,819 AUD
Retailer 12$6,167 AUD
Retailer 7$6,477 AUD
Retailer 8$6,982 AUD
Retailer 6$9,671 AUD

32 data points across 12 retailers

18 retailers$5,088 AUD to $5,337 AUD

Retailer 1
-
$4,355 AUD
HK$23,900 HKD
Price last confirmed 11 days ago
Retailer 2
-
$4,593 AUD
₹307,279 INR
View
Price last confirmed 12 days ago
A
Retailer 3
-
$5,088 AUD
SGD 4,830 SGD
View
Retailer 4
-
$5,152 AUD
$3,619 USD
View
Price last confirmed 12 days ago
Retailer 5
-
$5,225 AUD
$3,670 USD
View
Price last confirmed 23 days ago
B+
Retailer 6
-
$5,337 AUD
$3,749 USD
View
Retailer 7
-
$5,339 AUD
$3,750 USD
View
Price last confirmed 12 days ago
Retailer 8
-
$5,531 AUD
SGD 5,250 SGD
View
Price last confirmed 13 days ago
Retailer 9
-
$5,751 AUD
$4,040 USD
View
Price last confirmed 23 days ago
Retailer 10
-
$5,751 AUD
$4,040 USD
View
Price last confirmed 20 days ago
Retailer 11
-
$5,751 AUD
$4,040 USD
View
Price last confirmed 32 days ago
Retailer 12
-
$5,766 AUD
$4,050 USD
View
Price last confirmed 13 days ago
Retailer 13
-
$5,819 AUD
£3,219 GBP
View
Price last confirmed 13 days ago
Retailer 14
-
$6,167 AUD
View
Price last confirmed 28 days ago
Retailer 15
-
$6,637 AUD
$4,662 USD
View
Price last confirmed 22 days ago
Retailer 16
-
$6,982 AUD
ZAR 79,230 ZAR
View
Price last confirmed 14 days ago
Retailer 17
-
$9,671 AUD
£5,349 GBP
View
Price last confirmed 13 days ago
Most Expensive
NZ Jewellers
7e1079aa-910d-46f0-a4dd-76e0bf95d529 · Sep 28
$10,021 AUD
$7,039 USD
View
Price last confirmed 34 days ago
17 more retailers have this diamond
Prices start from $5,088 AUDSave up to $249 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
$5,088 AUD