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Round|Natural|GIA

1.20ct D SI2 Round Natural Diamond

EX • D/SI2 • GIA 5543335043

Certificate GIA 5543335043

Diamond specifications and retailer prices

From $3,967 AUD
As of November 6, 2026
Save $5,083 AUD (56%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $9,216 AUD at Queensmith · As of October 28, 2026
View at Queensmith

About this 1.2ct natural round diamond

This 1.2ct natural round sits in the classic one-carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 5543335043. Listed at 20 retailers as of November 5, 2026, with a 128% 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
D
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 5543335043
Dimensions6.82 × 6.78 × 4.23 mm
L/W Ratio1.01
Top View
6.82 mm6.78 mm1.20 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5543335043
Side View
Table 58.0%Crown 35°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 62.2%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $9,216 AUD|Low: $3,967 AUD|High: $9,252 AUD|Avg: $6,041 AUD|+2.6%
Queensmith
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
November 6, 2026
Retailer 4$3,967 AUD
Retailer 2$4,103 AUD
Retailer 11$4,617 AUD
Retailer 15$4,703 AUD
Retailer 8$4,970 AUD
Retailer 3$5,194 AUD
Retailer 7$5,194 AUD
Retailer 12$5,343 AUD
Retailer 14$5,394 AUD
Retailer 9$5,504 AUD
Retailer 5$5,994 AUD
Retailer 10$6,047 AUD
Retailer 13$8,664 AUD
Retailer 6$9,050 AUD
Queensmith$9,216 AUD

25 data points across 15 retailers

20 retailers$3,967 AUD to $9,050 AUD

A
Cheapest Retailer
-
$3,967 AUD
A
Retailer 2
-
$4,103 AUD
View
A
Retailer 3
-
$4,617 AUD
View
A
Retailer 4
-
$4,703 AUD
View
A
Retailer 5
-
$4,794 AUD
View
Final sale: no returns
A
Retailer 6
-
$4,860 AUD
View
A
Retailer 7
-
$4,970 AUD
View
Retailer 8
-
$5,194 AUD
View
Price last confirmed 12 days ago
B+
Retailer 9
-
$5,194 AUD
View
A
Retailer 10
-
$5,343 AUD
View
B+
Retailer 11
-
$5,394 AUD
View
B+
Retailer 12
-
$5,401 AUD
View
B+
Retailer 13
-
$5,504 AUD
View
B+
Retailer 14
-
$5,564 AUD
View
B+
Retailer 15
-
$5,994 AUD
View
B+
Retailer 16
-
$6,047 AUD
View
B
Retailer 17
-
$8,664 AUD
View
B
Retailer 18
-
$9,050 AUD
View
Retailer 19
-
$9,050 AUD
View
Price last confirmed 20 days ago
Most Expensive
Queensmith
5543335043 · Oct 28
$9,216 AUD
£5,080 GBP
View
Price last confirmed 8 days ago
19 more retailers have this diamond
Prices start from $3,967 AUDSave up to $5,083 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
$3,967 AUD