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Radiant|Natural|GIA

1.02ct J SI1 Radiant Natural Diamond

ID • J/SI1 • GIA 1236810838

Certificate GIA 1236810838

Diamond specifications and retailer prices

From $3,123 AUD
As of November 5, 2026
Save $4,854 AUD (61%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $7,977 AUD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.02ct natural radiant diamond

This 1.02ct natural radiant sits in the classic one-carat band, graded J 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 1236810838. Listed at 17 retailers as of November 5, 2026, with prices from $3,123 to $7,977, a $4,854 spread on the same certified stone. NZ Jewellers lists it at $7,977. 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

1.02
Carat
J
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishVery Good
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1236810838
Dimensions6.38 × 5.22 × 3.70 mm
L/W Ratio1.22
Girdle conditionPolished
Cert comments
Clouds pinpoints and surface graining are not shown.
Key to symbols
Feather, Crystal
Top View
6.38 mm5.22 mm1.02 ctJ / SI1
OriginNatural
CutIdeal
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateGIA 1236810838
Side View
Table 69.0%CrownGirdle: Slightly ThickPavilionCulet: NoneDepth 70.9%

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 5
Current: $7,977 AUD|Low: $3,190 AUD|High: $7,977 AUD|Avg: $4,305 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
November 7, 2026
Retailer 12$3,190 AUD
Retailer 11$3,334 AUD
Retailer 6$3,347 AUD
Retailer 3$3,449 AUD
Retailer 5$3,457 AUD
Retailer 7$3,457 AUD
Retailer 15$3,617 AUD
Retailer 14$3,767 AUD
Retailer 4$3,921 AUD
Retailer 2$4,037 AUD
Retailer 13$4,275 AUD
Retailer 9$4,657 AUD
Retailer 8$4,737 AUD
Retailer 10$6,666 AUD
NZ Jewellers$7,977 AUD

44 data points across 15 retailers

17 retailers$3,123 AUD to $7,977 AUD

B+
Cheapest Retailer
-
$3,123 AUD
B+
Retailer 2
-
$3,190 AUD
View
Final sale: no returns
B+
Retailer 3
-
$3,334 AUD
View
B+
Retailer 4
-
$3,347 AUD
View
B+
Retailer 5
-
$3,449 AUD
View
B+
Retailer 6
-
$3,457 AUD
View
Retailer 7
-
$3,457 AUD
View
Price last confirmed 9 days ago
B+
Retailer 8
-
$3,526 AUD
View
B
Retailer 9
-
$3,617 AUD
View
B
Retailer 10
-
$3,921 AUD
View
B
Retailer 11
-
$3,989 AUD
View
B
Retailer 12
-
$4,037 AUD
View
Retailer 13
-
$4,275 AUD
View
Price last confirmed 31 days ago
B
Retailer 14
-
$4,657 AUD
View
B
Retailer 15
-
$4,737 AUD
View
B
Retailer 16
-
$6,666 AUD
View
Most Expensive
B
NZ Jewellers
6cfd1771-c680-41ac-b95e-bfae3f91d2e6 · Nov 5
$7,977 AUD
$5,481 USD
View
16 more retailers have this diamond
Prices start from $3,123 AUDSave up to $4,854 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+
1.02ct Radiant
$3,123 AUD