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Radiant|Natural|GIA

1.51ct H SI1 Radiant Natural Diamond

GD • H/SI1 • GIA 1439197082

Certificate GIA 1439197082

Diamond specifications and retailer prices

From $8,307 AUD
As of November 6, 2026
Save $8,983 AUD (52%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $17,290 AUD at NZ Jewellers · As of November 5, 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 1439197082. Listed at 17 retailers as of November 5, 2026, with prices from $8,307 to $17,290, a $8,983 spread on the same certified stone. NZ Jewellers lists it at $17,290. 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
H
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1439197082
Dimensions7.39 × 5.62 × 4.19 mm
L/W Ratio1.31
Key to symbols
Feather, Crystal, Needle
Top View
7.39 mm5.62 mm1.51 ctH / SI1
OriginNatural
CutGood
PolishVery Good
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1439197082
Side View
Table 72.0%CrownGirdlePavilionCulet: NoneDepth 74.6%

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 6
Current: $17,290 AUD|Low: $8,233 AUD|High: $17,290 AUD|Avg: $10,911 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
November 7, 2026
Retailer 14$8,307 AUD
Retailer 7$9,016 AUD
Retailer 5$9,542 AUD
Retailer 17$9,543 AUD
Retailer 6$9,569 AUD
Retailer 10$9,687 AUD
Retailer 2$9,817 AUD
Retailer 15$10,034 AUD
Retailer 8$10,234 AUD
Retailer 9$10,275 AUD
Retailer 3$10,338 AUD
Retailer 16$10,496 AUD
Retailer 11$11,233 AUD
Retailer 4$11,928 AUD
Retailer 12$12,612 AUD
Retailer 13$15,189 AUD
NZ Jewellers$17,290 AUD

30 data points across 17 retailers

17 retailers$8,307 AUD to $17,290 AUD

B+
Cheapest Retailer
-
$8,307 AUD
B+
Retailer 2
-
$9,016 AUD
View
B
Retailer 3
-
$9,542 AUD
View
Final sale: no returns
Retailer 4
-
$9,543 AUD
View
Price last confirmed 9 days ago
B
Retailer 5
-
$9,569 AUD
View
B
Retailer 6
-
$9,687 AUD
View
B
Retailer 7
-
$9,817 AUD
View
Retailer 8
-
$10,034 AUD
View
Price last confirmed 16 days ago
B
Retailer 9
-
$10,275 AUD
View
B
Retailer 10
-
$10,338 AUD
View
B
Retailer 11
-
$10,496 AUD
View
B
Retailer 12
-
$10,572 AUD
View
B
Retailer 13
-
$11,233 AUD
View
B
Retailer 14
-
$11,928 AUD
View
B
Retailer 15
-
$12,612 AUD
View
C
Retailer 16
-
$15,189 AUD
View
Most Expensive
C
NZ Jewellers
fa951e26-714d-428c-ba9c-c37894228a87 · Nov 5
$17,290 AUD
$11,880 USD
View
16 more retailers have this diamond
Prices start from $8,307 AUDSave up to $8,983 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
$8,307 AUD