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Radiant|Natural|GIA

1.20ct H SI1 Radiant Natural Diamond

ID • H/SI1 • GIA 2534856644

Certificate GIA 2534856644

Diamond specifications and retailer prices

From $3,540 AUD
As of November 6, 2026
Save $4,234 AUD (54%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $8,900 AUD at Queensmith · As of October 28, 2026
View at Queensmith

About this 1.2ct natural radiant diamond

This 1.2ct natural radiant 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 2534856644. Listed at 23 retailers as of November 2, 2026, with a 120% 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
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2534856644
Dimensions7.24 × 5.39 × 3.65 mm
L/W Ratio1.34
Top View
7.24 mm5.39 mm1.20 ctH / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2534856644
Side View
Table 65.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 67.8%

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: $8,900 AUD|Low: $3,540 AUD|High: $8,900 AUD|Avg: $5,481 AUD
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 7, 2026
Retailer 6$3,540 AUD
Retailer 8$3,678 AUD
Retailer 14$4,187 AUD
Retailer 15$4,210 AUD
Retailer 3$4,245 AUD
Retailer 9$4,462 AUD
Retailer 2$4,759 AUD
Retailer 10$4,809 AUD
Retailer 11$4,922 AUD
Retailer 4$4,948 AUD
Retailer 12$5,356 AUD
Retailer 7$5,410 AUD
Retailer 13$5,615 AUD
Retailer 5$7,773 AUD
Queensmith$8,900 AUD

23 data points across 15 retailers

23 retailers$3,540 AUD to $7,773 AUD

A
Cheapest Retailer
-
$3,540 AUD
A
Retailer 2
-
$3,678 AUD
View
B+
Retailer 3
-
$4,187 AUD
View
B+
Retailer 4
-
$4,210 AUD
View
B+
Retailer 5
-
$4,245 AUD
View
Final sale: no returns
B+
Retailer 6
-
$4,408 AUD
View
B+
Retailer 7
-
$4,410 AUD
View
B+
Retailer 8
-
$4,462 AUD
View
B
Retailer 9
-
$4,689 AUD
View
Retailer 10
-
$4,694 AUD
View
Price last confirmed 22 days ago
Retailer 11
-
$4,694 AUD
View
Price last confirmed 20 days ago
B+
Retailer 12
-
$4,759 AUD
View
B+
Retailer 13
-
$4,809 AUD
View
Retailer 14
-
$4,874 AUD
View
Price last confirmed 22 days ago
B+
Retailer 15
-
$4,922 AUD
View
B+
Retailer 16
-
$4,948 AUD
View
Retailer 17
-
$5,058 AUD
View
Price last confirmed 34 days ago
B+
Retailer 18
-
$5,356 AUD
View
Retailer 19
-
$5,417 AUD
View
Price last confirmed 19 days ago
B+
Retailer 20
-
$5,615 AUD
View
B
Retailer 21
-
$7,773 AUD
View
Retailer 22
-
$8,178 AUD
View
Price last confirmed 21 days ago
Most Expensive
Queensmith
2534856644 · Oct 28
$8,900 AUD
£4,815 GBP
View
Price last confirmed 9 days ago
22 more retailers have this diamond
Prices start from $3,540 AUDSave up to $4,234 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 Radiant
$3,540 AUD