Radiant|Natural|GIA

1.20ct H SI1 Radiant Natural Diamond

ID • H/SI1 • GIA 2556740785

Certificate GIA 2556740785

Diamond specifications and retailer prices

From $4,542 AUD
As of November 1, 2026
Save $4,902 AUD (52%) vs most expensive(unlock to see where)
27 retailers carry this diamond
Most expensive: $9,840 AUD at NZ Jewellers · As of October 21, 2026
View at NZ Jewellers

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 2556740785. Listed at 27 retailers as of November 1, 2026, with a 108% 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
Crown angle51.66°
Pavilion angle35.15°
OriginNatural
Grading LabGIA
CertificateGIA 2556740785
Dimensions7.33 × 5.18 × 3.51 mm
L/W Ratio1.42
Girdle conditionThick
Key to symbols
Feather, Crystal, Cloud, Needle
Top View
7.33 mm5.18 mm1.20 ctH / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2556740785
Side View
Table 72.0%Crown 51.66°Girdle: STK-THKPavilion 35.15°Culet: NoneDepth 67.8%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $9,840 AUD|Low: $4,328 AUD|High: $9,840 AUD|Avg: $5,980 AUD
NZ Jewellers
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
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
Retailer 23
Retailer 24
Retailer 25
Retailer 26
November 3, 2026
Retailer 14$4,542 AUD
Retailer 22$4,621 AUD
Retailer 11$4,723 AUD
Retailer 12$4,752 AUD
Retailer 10$4,806 AUD
Retailer 24$4,927 AUD
Retailer 3$5,117 AUD
Retailer 26$5,117 AUD
Retailer 16$5,126 AUD
Retailer 7$5,269 AUD
Retailer 5$5,314 AUD
Retailer 19$5,472 AUD
Retailer 20$5,509 AUD
Retailer 6$5,574 AUD
Retailer 9$5,574 AUD
Retailer 8$5,749 AUD
Retailer 2$5,776 AUD
Retailer 4$5,905 AUD
Retailer 15$6,050 AUD
Retailer 17$6,070 AUD
Retailer 21$6,392 AUD
Retailer 18$6,394 AUD
Retailer 23$6,942 AUD
Retailer 13$9,444 AUD
Retailer 25$9,675 AUD
NZ Jewellers$9,840 AUD

23 data points across 26 retailers

27 retailers$4,542 AUD to $9,444 AUD

B+
Cheapest Retailer
-
$4,542 AUD
B+
Retailer 2
-
$4,621 AUD
View
B+
Retailer 3
-
$4,752 AUD
View
B+
Retailer 4
-
$4,806 AUD
View
B+
Retailer 5
-
$4,927 AUD
View
Retailer 6
-
$5,117 AUD
View
Price last confirmed 9 days ago
B+
Retailer 7
-
$5,117 AUD
View
Retailer 8
-
$5,117 AUD
View
Price last confirmed 16 days ago
B+
Retailer 9
-
$5,126 AUD
View
B+
Retailer 10
-
$5,269 AUD
View
B+
Retailer 11
-
$5,314 AUD
View
B+
Retailer 12
-
$5,509 AUD
View
B
Retailer 13
-
$5,574 AUD
View
B
Retailer 14
-
$5,574 AUD
View
B
Retailer 15
-
$5,749 AUD
View
B
Retailer 16
-
$5,776 AUD
View
B
Retailer 17
-
$5,905 AUD
View
Retailer 18
-
$5,905 AUD
View
Price last confirmed 17 days ago
Retailer 19
-
$6,050 AUD
View
Price last confirmed 30 days ago
B
Retailer 20
-
$6,070 AUD
View
B
Retailer 21
-
$6,392 AUD
View
Retailer 22
-
$6,394 AUD
View
Price last confirmed 25 days ago
B
Retailer 23
-
$6,942 AUD
View
B
Retailer 24
-
$9,444 AUD
View
Retailer 25
-
$9,675 AUD
View
Price last confirmed 10 days ago
Retailer 26
-
$9,840 AUD
View
Price last confirmed 8 days ago
Most Expensive
NZ Jewellers
08ea702e-d102-4fa3-8078-23c675ad2a1a · Oct 21
$9,840 AUD
$6,761 USD
View
Price last confirmed 16 days ago
26 more retailers have this diamond
Prices start from $4,542 AUDSave up to $4,902 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.

B+
1.20ct Radiant
$4,542 AUD