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Round|Natural|GIA

1.51ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 5443367010

Certificate GIA 5443367010

Diamond specifications and retailer prices

From $7,325 AUD
HK$40,200 HKD
As of November 1, 2026
Save $9,174 AUD (56%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $16,500 AUD at NZ Jewellers · As of October 27, 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 5443367010. Listed at 19 retailers as of October 27, 2026, with prices from $7,325 to $16,500, a $9,174 spread on the same certified stone. NZ Jewellers lists it at $16,500. 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 angle32°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 5443367010
Dimensions7.36 × 7.40 × 4.50 mm
L/W Ratio1.01
Star length50%
Lower girdle75%
Top View
7.36 mm7.40 mm1.51 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5443367010
Side View
Table 57.0%Crown 32°Girdle: MED-STKPavilion 41°Culet: NoneDepth 61.0%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $10,217 AUD|Low: $7,325 AUD|High: $14,710 AUD|Avg: $10,396 AUD|+9.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 1, 2026
Retailer 4$7,325 AUD
Retailer 3$8,347 AUD
Retailer 9$9,035 AUD
Retailer 10$9,105 AUD
Retailer 11$9,674 AUD
Retailer 2$10,016 AUD
Retailer 5$10,176 AUD
Retailer 1$10,217 AUD
Retailer 6$10,966 AUD
Retailer 7$12,013 AUD
Retailer 8$14,554 AUD

40 data points across 11 retailers

19 retailers$7,325 AUD to $16,500 AUD

A
Cheapest Retailer
-
$7,325 AUD
HK$40,200 HKD
Retailer 2
-
$8,347 AUD
$5,863 USD
View
Price last confirmed 7 days ago
B+
Retailer 3
-
$8,604 AUD
$6,044 USD
View
B+
Retailer 4
-
$8,623 AUD
$6,057 USD
View
B+
Retailer 5
-
$9,035 AUD
SGD 8,576 SGD
View
Retailer 6
-
$9,107 AUD
$6,397 USD
View
Price last confirmed 8 days ago
B+
Retailer 7
-
$9,140 AUD
$6,420 USD
View
Retailer 8
-
$9,674 AUD
View
Price last confirmed 29 days ago
B+
Retailer 9
-
$9,866 AUD
$6,930 USD
View
Retailer 10
-
$10,016 AUD
$7,036 USD
View
Price last confirmed 8 days ago
Retailer 11
-
$10,093 AUD
$7,090 USD
View
Price last confirmed 8 days ago
B+
Retailer 12
-
$10,095 AUD
$7,091 USD
View
B+
Retailer 13
-
$10,176 AUD
€6,808 EUR
View
B
Retailer 14
-
$10,217 AUD
£5,651 GBP
View
B+
Retailer 15
-
$10,966 AUD
£6,065 GBP
View
B+
Retailer 16
-
$11,383 AUD
$7,996 USD
View
B+
Retailer 17
-
$12,013 AUD
ZAR 136,322 ZAR
View
B
Retailer 18
-
$14,554 AUD
£8,050 GBP
View
Most Expensive
B
NZ Jewellers
52f86b50-f4b6-4949-93c9-690b18e8f1aa · Oct 27
$16,500 AUD
$11,590 USD
View
18 more retailers have this diamond
Prices start from $7,325 AUDSave up to $9,174 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.

A
1.51ct Round
$7,325 AUD