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Oval|Natural|GIA

1.20ct H SI1 Oval Natural Diamond

EX • H/SI1 • GIA 1543538328

Certificate GIA 1543538328

Diamond specifications and retailer prices

From $3,446 AUD
As of November 6, 2026
Save $4,116 AUD (54%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $8,789 AUD at Queensmith · As of October 28, 2026
View at Queensmith

About this 1.2ct natural oval diamond

This 1.2ct natural oval sits in the classic one-carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1543538328. Listed at 22 retailers as of November 4, 2026, with a 119% 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
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1543538328
Dimensions8.03 × 5.91 × 3.72 mm
L/W Ratio1.36
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Feather, Indented Natural, Natural
Top View
8.03 mm5.91 mm1.20 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1543538328
Side View
Table 61.0%CrownGirdle: THK-VTKPavilionCulet: 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: Nov 6
Current: $8,789 AUD|Low: $3,446 AUD|High: $8,817 AUD|Avg: $5,019 AUD|+2.5%
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
November 6, 2026
Retailer 3$3,446 AUD
Retailer 2$3,589 AUD
Retailer 10$4,085 AUD
Retailer 11$4,109 AUD
Retailer 6$4,184 AUD
Retailer 13$4,410 AUD
Retailer 8$4,663 AUD
Retailer 4$4,742 AUD
Retailer 7$4,800 AUD
Retailer 14$4,905 AUD
Retailer 5$5,308 AUD
Retailer 9$5,535 AUD
Retailer 12$7,562 AUD
Queensmith$8,789 AUD

27 data points across 14 retailers

22 retailers$3,446 AUD to $7,562 AUD

A
Cheapest Retailer
-
$3,446 AUD
A
Retailer 2
-
$3,589 AUD
View
B+
Retailer 3
-
$4,085 AUD
View
B+
Retailer 4
-
$4,109 AUD
View
B+
Retailer 5
-
$4,184 AUD
View
Final sale: no returns
B+
Retailer 6
-
$4,301 AUD
View
B+
Retailer 7
-
$4,410 AUD
View
Retailer 8
-
$4,557 AUD
View
Price last confirmed 19 days ago
Retailer 9
-
$4,557 AUD
View
Price last confirmed 21 days ago
B+
Retailer 10
-
$4,614 AUD
View
B+
Retailer 11
-
$4,663 AUD
View
Retailer 12
-
$4,733 AUD
View
Price last confirmed 21 days ago
B+
Retailer 13
-
$4,742 AUD
View
B+
Retailer 14
-
$4,800 AUD
View
B+
Retailer 15
-
$4,905 AUD
View
Retailer 16
-
$4,935 AUD
View
Price last confirmed 33 days ago
Retailer 17
-
$5,258 AUD
View
Price last confirmed 19 days ago
B+
Retailer 18
-
$5,308 AUD
View
B+
Retailer 19
-
$5,535 AUD
View
B
Retailer 20
-
$7,562 AUD
View
Retailer 21
-
$7,941 AUD
View
Price last confirmed 20 days ago
Most Expensive
Queensmith
1543538328 · Oct 28
$8,789 AUD
£4,755 GBP
View
Price last confirmed 9 days ago
21 more retailers have this diamond
Prices start from $3,446 AUDSave up to $4,116 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 Oval
$3,446 AUD