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Round|Natural|GIA

1.51ct J SI1 Round Natural Diamond

VG • J/SI1 • GIA 6541094309

Certificate GIA 6541094309

Diamond specifications and retailer prices

From $4,173 AUD
HK$22,900 HKD
As of November 1, 2026
Save $5,691 AUD (58%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $9,864 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 J colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by GIA 6541094309. Listed at 20 retailers as of October 30, 2026, with prices from $4,173 to $9,864, a $5,691 spread on the same certified stone. NZ Jewellers lists it at $9,864. 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
J
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceStrong
Crown angle36.5°
Pavilion angle40°
OriginNatural
Grading LabGIA
CertificateGIA 6541094309
Dimensions7.12 × 7.21 × 4.51 mm
L/W Ratio1.01
Top View
7.12 mm7.21 mm1.51 ctJ / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceStrong
CertificateGIA 6541094309
Side View
Table 59.0%Crown 36.5°Girdle: STK-THKPavilion 40°Culet: NoneDepth 62.9%

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: $5,371 AUD|Low: $4,136 AUD|High: $9,582 AUD|Avg: $6,118 AUD|+0.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 2, 2026
Retailer 10$4,173 AUD
Retailer 11$4,813 AUD
Retailer 13$5,199 AUD
Retailer 2$5,226 AUD
Retailer 1$5,371 AUD
Retailer 6$5,595 AUD
Retailer 5$5,662 AUD
Retailer 3$6,070 AUD
Retailer 7$6,381 AUD
Retailer 12$6,482 AUD
Retailer 4$6,844 AUD
Retailer 9$6,959 AUD
Retailer 8$9,468 AUD

42 data points across 13 retailers

20 retailers$4,173 AUD to $9,864 AUD

A
Cheapest Retailer
-
$4,173 AUD
HK$22,900 HKD
A
Retailer 2
-
$4,813 AUD
$3,381 USD
View
B+
Retailer 3
-
$4,983 AUD
$3,500 USD
View
B+
Retailer 4
-
$5,199 AUD
SGD 4,935 SGD
View
B+
Retailer 5
-
$5,226 AUD
$3,671 USD
View
Final sale: no returns
B+
Retailer 6
-
$5,255 AUD
SGD 4,988 SGD
View
B+
Retailer 7
-
$5,371 AUD
£2,971 GBP
View
B+
Retailer 8
-
$5,492 AUD
$3,858 USD
View
B+
Retailer 9
-
$5,595 AUD
$3,930 USD
View
B+
Retailer 10
-
$5,662 AUD
$3,977 USD
View
B+
Retailer 11
-
$5,662 AUD
$3,977 USD
View
Retailer 12
-
$6,070 AUD
View
Price last confirmed 29 days ago
B+
Retailer 13
-
$6,381 AUD
€4,269 EUR
View
B
Retailer 14
-
$6,482 AUD
£3,585 GBP
View
B
Retailer 15
-
$6,533 AUD
$4,589 USD
View
Retailer 16
-
$6,844 AUD
£3,786 GBP
View
Price last confirmed 33 days ago
B
Retailer 17
-
$6,959 AUD
ZAR 78,971 ZAR
View
B
Retailer 18
-
$8,005 AUD
$5,623 USD
View
B
Retailer 19
-
$9,468 AUD
£5,237 GBP
View
Most Expensive
C
NZ Jewellers
a3e18db9-7fba-4524-aeeb-cbfa87a87723 · Oct 30
$9,864 AUD
$6,929 USD
View
19 more retailers have this diamond
Prices start from $4,173 AUDSave up to $5,691 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
$4,173 AUD