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Radiant|Natural|GIA

1.51ct J SI2 Radiant Natural Diamond

VG • J/SI2 • GIA 1453307957

Certificate GIA 1453307957

Diamond specifications and retailer prices

From $7,040 AUD
$4,945 USD
As of October 28, 2026
Save $8,329 AUD (54%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $15,369 AUD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.51ct natural radiant diamond

This 1.51ct natural radiant sits in the one-and-a-half to two carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 1453307957. Listed at 18 retailers as of October 28, 2026, with prices from $7,040 to $15,369, a $8,329 spread on the same certified stone. NZ Jewellers lists it at $15,369. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.51
Carat
J
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Pavilion angle35.1°
OriginNatural
Grading LabGIA
CertificateGIA 1453307957
Dimensions7.85 × 5.88 × 3.84 mm
L/W Ratio1.34
Girdle conditionPolished
Top View
7.85 mm5.88 mm1.51 ctJ / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 1453307957
Side View
Table 66.0%CrownGirdle: STK-THKPavilion 35.1°Culet: NoneDepth 65.3%

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: Oct 28
Current: $15,369 AUD|Low: $6,661 AUD|High: $15,369 AUD|Avg: $9,092 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 2, 2026
Retailer 10$7,040 AUD
Retailer 5$7,179 AUD
Retailer 12$7,260 AUD
Retailer 13$7,685 AUD
Retailer 11$7,749 AUD
Retailer 7$8,072 AUD
Retailer 3$8,325 AUD
Retailer 14$8,325 AUD
Retailer 15$8,325 AUD
Retailer 2$8,815 AUD
Retailer 4$8,881 AUD
Retailer 6$9,606 AUD
Retailer 8$10,042 AUD
Retailer 9$13,610 AUD
NZ Jewellers$15,369 AUD

44 data points across 15 retailers

18 retailers$7,040 AUD to $15,369 AUD

B+
Cheapest Retailer
-
$7,040 AUD
$4,945 USD
B
Retailer 2
-
$7,179 AUD
$5,043 USD
View
B
Retailer 3
-
$7,260 AUD
$5,100 USD
View
B
Retailer 4
-
$7,685 AUD
$5,398 USD
View
Final sale: no returns
B
Retailer 5
-
$7,749 AUD
$5,443 USD
View
B
Retailer 6
-
$8,325 AUD
$5,848 USD
View
B
Retailer 7
-
$8,325 AUD
$5,848 USD
View
B
Retailer 8
-
$8,325 AUD
$5,848 USD
View
B
Retailer 9
-
$8,815 AUD
£4,876 GBP
View
B
Retailer 10
-
$8,881 AUD
View
B
Retailer 11
-
$9,140 AUD
$6,420 USD
View
B
Retailer 12
-
$9,140 AUD
$6,420 USD
View
B
Retailer 13
-
$9,453 AUD
$6,640 USD
View
B
Retailer 14
-
$9,606 AUD
$6,748 USD
View
B
Retailer 15
-
$10,042 AUD
€6,718 EUR
View
Retailer 16
-
$10,133 AUD
$7,118 USD
View
Price last confirmed 10 days ago
B
Retailer 17
-
$13,610 AUD
£7,528 GBP
View
Most Expensive
C
NZ Jewellers
5f9b0cbc-a551-402b-a685-77acf222b159 · Oct 30
$15,369 AUD
$10,796 USD
View
17 more retailers have this diamond
Prices start from $7,040 AUDSave up to $8,329 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+
1.51ct Radiant
$7,040 AUD