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Round|Natural|GIA

1.51ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 6562622580

Certificate GIA 6562622580

Diamond specifications and retailer prices

From $8,930 AUD
As of November 6, 2026
Save $10,923 AUD (55%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $19,853 AUD at NZ Jewellers · As of November 7, 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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6562622580. Listed at 22 retailers as of November 6, 2026, with prices from $8,930 to $19,853, a $10,923 spread on the same certified stone. NZ Jewellers lists it at $19,853. 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
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 6562622580
Dimensions7.29 × 7.35 × 4.58 mm
L/W Ratio1.01
Key to symbols
Crystal, Feather, Needle
Top View
7.29 mm7.35 mm1.51 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6562622580
Side View
Table 57.0%Crown 36°Girdle: STK-STKPavilion 41°Culet: NoneDepth 62.5%

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: $19,853 AUD|Low: $8,930 AUD|High: $19,853 AUD|Avg: $11,856 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
Retailer 21
November 7, 2026
Retailer 12$8,930 AUD
Retailer 10$9,469 AUD
Retailer 9$9,926 AUD
Retailer 6$9,968 AUD
Retailer 13$10,250 AUD
Retailer 2$10,339 AUD
Retailer 14$10,754 AUD
Retailer 7$10,920 AUD
Retailer 20$11,090 AUD
Retailer 17$11,224 AUD
Retailer 19$11,410 AUD
Retailer 11$11,471 AUD
Retailer 18$11,992 AUD
Retailer 21$11,992 AUD
Retailer 3$12,385 AUD
Retailer 8$12,409 AUD
Retailer 4$12,770 AUD
Retailer 16$13,167 AUD
Retailer 15$15,021 AUD
Retailer 5$16,498 AUD
NZ Jewellers$19,853 AUD

8 data points across 21 retailers

22 retailers$8,930 AUD to $19,853 AUD

B+
Cheapest Retailer
-
$8,930 AUD
B+
Retailer 2
-
$9,322 AUD
View
B+
Retailer 3
-
$9,469 AUD
View
B+
Retailer 4
-
$9,926 AUD
View
Final sale: no returns
B+
Retailer 5
-
$9,968 AUD
View
B+
Retailer 6
-
$10,250 AUD
View
B+
Retailer 7
-
$10,339 AUD
View
B
Retailer 8
-
$10,754 AUD
View
B
Retailer 9
-
$10,920 AUD
View
B+
Retailer 10
-
$11,090 AUD
View
B+
Retailer 11
-
$11,224 AUD
View
B+
Retailer 12
-
$11,410 AUD
View
B+
Retailer 13
-
$11,471 AUD
View
B
Retailer 14
-
$11,992 AUD
View
B
Retailer 15
-
$11,992 AUD
View
B
Retailer 16
-
$12,385 AUD
View
B
Retailer 17
-
$12,409 AUD
View
B
Retailer 18
-
$12,770 AUD
View
B
Retailer 19
-
$13,167 AUD
View
B
Retailer 20
-
$15,021 AUD
View
B
Retailer 21
-
$16,498 AUD
View
Most Expensive
B
NZ Jewellers
d2df7cba-f5a1-4701-8622-d541ad656b00 · Nov 7
$19,853 AUD
$13,641 USD
View
21 more retailers have this diamond
Prices start from $8,930 AUDSave up to $10,923 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
$8,930 AUD