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Radiant|Natural|GIA

1.51ct H SI1 Radiant Natural Diamond

VG • H/SI1 • GIA 1568428839

Certificate GIA 1568428839

Diamond specifications and retailer prices

From $8,452 AUD
As of November 6, 2026
Save $10,215 AUD (55%) vs most expensive(unlock to see where)
32 retailers carry this diamond
Most expensive: $18,667 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 very-good cut grade stated by the retailer rather than the lab and certified by GIA 1568428839. Listed at 32 retailers as of November 5, 2026, with prices from $8,452 to $18,667, a $10,215 spread on the same certified stone. NZ Jewellers lists it at $18,667. 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
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1568428839
Dimensions7.70 × 6.00 × 4.11 mm
L/W Ratio1.28
Culet sizeNone
Key to symbols
Feather, Cavity, Indented Natural
Top View
7.70 mm6.00 mm1.51 ctH / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1568428839
Side View
Table 67.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 68.5%

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: $18,667 AUD|Low: $8,452 AUD|High: $18,667 AUD|Avg: $10,660 AUD
NZ Jewellers
Retailer 2
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Retailer 31
November 7, 2026
Retailer 4$8,452 AUD
Retailer 12$8,645 AUD
Retailer 6$8,818 AUD
Retailer 7$8,828 AUD
Retailer 31$8,939 AUD
Retailer 26$9,019 AUD
Retailer 11$9,333 AUD
Retailer 15$9,333 AUD
Retailer 16$9,365 AUD
Retailer 9$9,611 AUD
Retailer 13$9,917 AUD
Retailer 18$9,917 AUD
Retailer 8$9,942 AUD
Retailer 20$10,112 AUD
Retailer 19$10,268 AUD
Retailer 17$10,301 AUD
Retailer 2$10,419 AUD
Retailer 24$10,460 AUD
Retailer 21$10,473 AUD
Retailer 22$10,473 AUD
Retailer 25$11,061 AUD
Retailer 5$11,207 AUD
Retailer 23$11,207 AUD
Retailer 29$11,249 AUD
Retailer 14$11,358 AUD
Retailer 27$11,495 AUD
Retailer 10$11,585 AUD
Retailer 3$11,668 AUD
Retailer 28$13,618 AUD
Retailer 30$15,555 AUD
NZ Jewellers$18,667 AUD

10 data points across 31 retailers

32 retailers$8,452 AUD to $18,667 AUD

B+
Cheapest Retailer
-
$8,452 AUD
B+
Retailer 2
-
$8,645 AUD
View
B+
Retailer 3
-
$8,667 AUD
View
B+
Retailer 4
-
$8,818 AUD
View
B+
Retailer 5
-
$8,828 AUD
View
B+
Retailer 6
-
$8,939 AUD
View
B+
Retailer 7
-
$9,019 AUD
View
Retailer 8
-
$9,333 AUD
View
Price last confirmed 9 days ago
B+
Retailer 9
-
$9,333 AUD
View
Final sale: no returns
B+
Retailer 10
-
$9,365 AUD
View
B+
Retailer 11
-
$9,611 AUD
View
B+
Retailer 12
-
$9,917 AUD
View
B+
Retailer 13
-
$9,917 AUD
View
B+
Retailer 14
-
$9,942 AUD
View
B
Retailer 15
-
$10,112 AUD
View
B
Retailer 16
-
$10,268 AUD
View
B
Retailer 17
-
$10,301 AUD
View
B+
Retailer 18
-
$10,419 AUD
View
B+
Retailer 19
-
$10,460 AUD
View
B
Retailer 20
-
$10,473 AUD
View
B
Retailer 21
-
$10,473 AUD
View
B
Retailer 22
-
$11,061 AUD
View
B
Retailer 23
-
$11,207 AUD
View
B
Retailer 24
-
$11,207 AUD
View
B
Retailer 25
-
$11,249 AUD
View
B
Retailer 26
-
$11,358 AUD
View
B
Retailer 27
-
$11,495 AUD
View
B
Retailer 28
-
$11,585 AUD
View
B
Retailer 29
-
$11,668 AUD
View
B
Retailer 30
-
$13,618 AUD
View
B
Retailer 31
-
$15,555 AUD
View
Most Expensive
C
NZ Jewellers
f114e483-5814-48b5-9cb6-75a56426bb52 · Nov 5
$18,667 AUD
$12,826 USD
View
31 more retailers have this diamond
Prices start from $8,452 AUDSave up to $10,215 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
$8,452 AUD