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Round|Natural|GIA

1.51ct I SI1 Round Natural Diamond

VG • I/SI1 • GIA 3545894934

Certificate GIA 3545894934

Diamond specifications and retailer prices

From $6,709 AUD
As of November 5, 2026
Save $7,492 AUD (53%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $14,202 AUD at NZ Jewellers · As of November 5, 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by GIA 3545894934. Listed at 21 retailers as of November 5, 2026, with prices from $6,709 to $14,202, a $7,492 spread on the same certified stone. NZ Jewellers lists it at $14,202. 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
I
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceStrong
Crown angle38.5°
Pavilion angle40.2°
OriginNatural
Grading LabGIA
CertificateGIA 3545894934
Dimensions7.06 × 7.17 × 4.63 mm
L/W Ratio1.02
Top View
7.06 mm7.17 mm1.51 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceStrong
CertificateGIA 3545894934
Side View
Table 56.0%Crown 38.5°Girdle: MED-THKPavilion 40.2°Culet: NDepth 65.0%

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 5
Current: $8,686 AUD|Low: $6,509 AUD|High: $12,645 AUD|Avg: $8,358 AUD|-1.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 12$6,709 AUD
Retailer 10$6,789 AUD
Retailer 11$7,099 AUD
Retailer 3$7,219 AUD
Retailer 4$7,421 AUD
Retailer 8$8,147 AUD
Retailer 2$8,504 AUD
Retailer 1$8,686 AUD
Retailer 7$9,205 AUD
Retailer 6$9,232 AUD
Retailer 5$10,360 AUD
Retailer 9$12,476 AUD

36 data points across 12 retailers

21 retailers$6,709 AUD to $14,202 AUD

B+
Cheapest Retailer
-
$6,709 AUD
A
Retailer 2
-
$6,789 AUD
View
B+
Retailer 3
-
$7,099 AUD
View
Final sale: no returns
B+
Retailer 4
-
$7,219 AUD
View
B+
Retailer 5
-
$7,421 AUD
View
Retailer 6
-
$7,693 AUD
View
Price last confirmed 50 days ago
B+
Retailer 7
-
$7,693 AUD
View
Retailer 8
-
$7,693 AUD
View
Price last confirmed 8 days ago
B+
Retailer 9
-
$7,693 AUD
View
B+
Retailer 10
-
$8,147 AUD
View
Retailer 11
-
$8,504 AUD
View
Price last confirmed 28 days ago
B+
Retailer 12
-
$8,686 AUD
View
Retailer 13
-
$8,876 AUD
View
Price last confirmed 45 days ago
B+
Retailer 14
-
$8,876 AUD
View
B+
Retailer 15
-
$9,205 AUD
View
B
Retailer 16
-
$9,232 AUD
View
Retailer 17
-
$9,367 AUD
View
Price last confirmed 14 days ago
B
Retailer 18
-
$10,360 AUD
View
B
Retailer 19
-
$12,476 AUD
View
Retailer 20
-
$14,202 AUD
View
Price last confirmed 48 days ago
Most Expensive
C
NZ Jewellers
2e0273fb-c338-4381-9582-6e861e1a2774 · Nov 5
$14,202 AUD
$9,758 USD
View
20 more retailers have this diamond
Prices start from $6,709 AUDSave up to $7,492 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
$6,709 AUD