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Radiant|Natural|GIA

1.20ct I SI1 Radiant Natural Diamond

EX • I/SI1 • GIA 5553693574

Certificate GIA 5553693574

Diamond specifications and retailer prices

From $3,666 AUD
$2,575 USD
As of November 1, 2026
Save $4,178 AUD (53%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $7,844 AUD at NZ Jewellers · As of October 30, 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 I 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 5553693574. Listed at 20 retailers as of October 30, 2026, with prices from $3,666 to $7,844, a $4,178 spread on the same certified stone. NZ Jewellers lists it at $7,844. 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
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 5553693574
Dimensions7.44 × 5.28 × 3.59 mm
L/W Ratio1.41
Culet sizeNone
Key to symbols
Crystal, Feather, Needle
Top View
7.44 mm5.28 mm1.20 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 5553693574
Side View
Table 68.0%CrownGirdle: STK-STKPavilionCulet: NoneDepth 68.0%

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: $7,844 AUD|Low: $3,250 AUD|High: $8,032 AUD|Avg: $4,364 AUD|-2.3%
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
November 1, 2026
Retailer 11$3,392 AUD
Retailer 9$3,666 AUD
Retailer 4$3,716 AUD
Retailer 6$3,831 AUD
Retailer 3$3,859 AUD
Retailer 10$3,877 AUD
Retailer 5$3,993 AUD
Retailer 16$4,079 AUD
Retailer 18$4,079 AUD
Retailer 17$4,237 AUD
Retailer 2$4,392 AUD
Retailer 13$4,666 AUD
Retailer 7$4,706 AUD
Retailer 8$5,034 AUD
Retailer 19$5,225 AUD
Retailer 15$5,271 AUD
Retailer 14$5,534 AUD
Retailer 12$7,530 AUD
NZ Jewellers$7,844 AUD

21 data points across 19 retailers

20 retailers$3,666 AUD to $7,844 AUD

B+
Cheapest Retailer
-
$3,666 AUD
$2,575 USD
Retailer 2
-
$3,676 AUD
$2,582 USD
View
Price last confirmed 17 days ago
Retailer 3
-
$3,676 AUD
$2,582 USD
View
Price last confirmed 13 days ago
B+
Retailer 4
-
$3,716 AUD
$2,610 USD
View
B+
Retailer 5
-
$3,831 AUD
$2,691 USD
View
B+
Retailer 6
-
$3,859 AUD
$2,711 USD
View
Retailer 7
-
$3,877 AUD
$2,723 USD
View
Price last confirmed 15 days ago
B+
Retailer 8
-
$3,993 AUD
$2,805 USD
View
B+
Retailer 9
-
$4,079 AUD
$2,865 USD
View
B+
Retailer 10
-
$4,237 AUD
$2,976 USD
View
Retailer 11
-
$4,304 AUD
View
Price last confirmed 25 days ago
B
Retailer 12
-
$4,392 AUD
£2,429 GBP
View
B
Retailer 13
-
$4,666 AUD
£2,581 GBP
View
B
Retailer 14
-
$4,702 AUD
$3,303 USD
View
B
Retailer 15
-
$4,706 AUD
$3,306 USD
View
B
Retailer 16
-
$5,034 AUD
$3,536 USD
View
B
Retailer 17
-
$5,271 AUD
€3,526 EUR
View
B
Retailer 18
-
$5,534 AUD
ZAR 62,805 ZAR
View
B
Retailer 19
-
$7,530 AUD
£4,165 GBP
View
Most Expensive
B
NZ Jewellers
ffc4360b-9be8-481a-9984-68ecb1bbfab8 · Oct 30
$7,844 AUD
$5,510 USD
View
19 more retailers have this diamond
Prices start from $3,666 AUDSave up to $4,178 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
$3,666 AUD