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Radiant|Natural|GIA

0.81ct J SI1 Radiant Natural Diamond

ID • J/SI1 • GIA 2427523370

Certificate GIA 2427523370

Diamond specifications and retailer prices

From $1,242 AUD
HK$6,800 HKD
As of November 1, 2026
Save $2,813 AUD (69%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $4,055 AUD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 0.81ct natural radiant diamond

This 0.81ct natural radiant sits in the just-under-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 2427523370. Listed at 18 retailers as of October 30, 2026, with prices from $1,242 to $4,055, a $2,813 spread on the same certified stone. NZ Jewellers lists it at $4,055. 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

0.81
Carat
J
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2427523370
Dimensions6.27 × 4.70 × 3.07 mm
L/W Ratio1.33
Top View
6.27 mm4.70 mm0.81 ctJ / SI1
OriginNatural
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 2427523370
Side View
Table 65.0%CrownGirdlePavilionCulet: NoneDepth 65.4%

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 1
Current: $4,055 AUD|Low: $1,224 AUD|High: $4,055 AUD|Avg: $1,938 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
November 2, 2026
Retailer 15$1,242 AUD
Retailer 7$1,521 AUD
Retailer 8$1,527 AUD
Retailer 4$1,534 AUD
Retailer 11$1,592 AUD
Retailer 10$1,611 AUD
Retailer 19$1,662 AUD
Retailer 20$1,662 AUD
Retailer 12$1,720 AUD
Retailer 18$1,727 AUD
Retailer 5$1,747 AUD
Retailer 6$1,848 AUD
Retailer 9$1,854 AUD
Retailer 14$1,896 AUD
Retailer 3$1,918 AUD
Retailer 13$2,096 AUD
Retailer 16$2,327 AUD
Retailer 17$2,459 AUD
Retailer 2$3,044 AUD
NZ Jewellers$4,055 AUD

27 data points across 20 retailers

18 retailers$1,242 AUD to $4,055 AUD

A
Cheapest Retailer
-
$1,242 AUD
HK$6,800 HKD
B+
Retailer 2
-
$1,527 AUD
$1,070 USD
View
B+
Retailer 3
-
$1,534 AUD
$1,075 USD
View
Final sale: no returns
B+
Retailer 4
-
$1,592 AUD
$1,116 USD
View
B+
Retailer 5
-
$1,662 AUD
$1,165 USD
View
B+
Retailer 6
-
$1,662 AUD
$1,165 USD
View
B+
Retailer 7
-
$1,720 AUD
SGD 1,629 SGD
View
B+
Retailer 8
-
$1,727 AUD
$1,210 USD
View
B+
Retailer 9
-
$1,747 AUD
$1,224 USD
View
B+
Retailer 10
-
$1,848 AUD
$1,295 USD
View
B+
Retailer 11
-
$1,854 AUD
$1,299 USD
View
B+
Retailer 12
-
$1,896 AUD
£1,046 GBP
View
B+
Retailer 13
-
$1,918 AUD
$1,344 USD
View
B
Retailer 14
-
$2,096 AUD
£1,157 GBP
View
B
Retailer 15
-
$2,327 AUD
€1,553 EUR
View
B
Retailer 16
-
$2,459 AUD
ZAR 27,840 ZAR
View
B
Retailer 17
-
$3,044 AUD
£1,680 GBP
View
Most Expensive
B
NZ Jewellers
5b064324-78e0-4dad-ba6f-27894bd43aef · Oct 30
$4,055 AUD
$2,842 USD
View
17 more retailers have this diamond
Prices start from $1,242 AUDSave up to $2,813 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
0.81ct Radiant
$1,242 AUD