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Round|Natural|GIA

1.51ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 6542368669

Certificate GIA 6542368669

Diamond specifications and retailer prices

From $8,560 AUD
As of November 1, 2026
Save $9,869 AUD (54%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $18,429 AUD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.51ct natural round diamond

This 1.51ct natural round sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6542368669. Listed at 17 retailers as of October 30, 2026, with prices from $8,560 to $18,429, a $9,869 spread on the same certified stone. NZ Jewellers lists it at $18,429. 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

1.51
Carat
H
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6542368669
Dimensions7.29 × 7.34 × 4.59 mm
L/W Ratio1.01
Culet sizeNone
Top View
7.29 mm7.34 mm1.51 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6542368669
Side View
Table 57.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 62.7%

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 1
Current: $18,429 AUD|Low: $6,076 AUD|High: $18,429 AUD|Avg: $11,127 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 1, 2026
Retailer 9$6,076 AUD
Retailer 15$8,705 AUD
Retailer 4$9,214 AUD
Retailer 14$9,214 AUD
Retailer 17$9,982 AUD
Retailer 16$10,136 AUD
Retailer 12$10,169 AUD
Retailer 10$10,317 AUD
Retailer 5$11,061 AUD
Retailer 6$11,061 AUD
Retailer 13$11,106 AUD
Retailer 11$11,390 AUD
Retailer 7$11,432 AUD
Retailer 3$11,517 AUD
Retailer 8$12,140 AUD
Retailer 2$15,355 AUD
NZ Jewellers$18,429 AUD

40 data points across 17 retailers

17 retailers$8,560 AUD to $18,429 AUD

B+
Cheapest Retailer
-
$8,560 AUD
B+
Retailer 2
-
$8,705 AUD
$6,115 USD
View
B+
Retailer 3
-
$9,214 AUD
$6,472 USD
View
B+
Retailer 4
-
$9,214 AUD
$6,472 USD
View
Final sale: no returns
B+
Retailer 5
-
$9,982 AUD
$7,012 USD
View
B+
Retailer 6
-
$10,136 AUD
$7,120 USD
View
B+
Retailer 7
-
$10,169 AUD
$7,143 USD
View
B+
Retailer 8
-
$10,317 AUD
£5,707 GBP
View
B+
Retailer 9
-
$11,061 AUD
$7,770 USD
View
B+
Retailer 10
-
$11,061 AUD
$7,770 USD
View
B+
Retailer 11
-
$11,106 AUD
$7,801 USD
View
B+
Retailer 12
-
$11,390 AUD
€7,620 EUR
View
B
Retailer 13
-
$11,432 AUD
$8,030 USD
View
B
Retailer 14
-
$11,517 AUD
$8,090 USD
View
Retailer 15
-
$12,140 AUD
$8,528 USD
View
Price last confirmed 9 days ago
B
Retailer 16
-
$15,355 AUD
£8,493 GBP
View
Most Expensive
B
NZ Jewellers
3f48afd1-8abf-450b-a82f-d6648a2087b1 · Oct 30
$18,429 AUD
$12,945 USD
View
16 more retailers have this diamond
Prices start from $8,560 AUDSave up to $9,869 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 Round
$8,560 AUD