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Round|Natural|GIA

1.51ct I VS1 Round Natural Diamond

ID • I/VS1 • GIA 307

Certificate GIA 307

Diamond specifications and retailer prices

From $8,879 AUD
As of November 3, 2026
Save $5,776 AUD (39%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $14,656 AUD at Helzberg Diamonds · As of November 3, 2026
View at Helzberg Diamonds

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 VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by GIA. Listed at 7 retailers as of November 3, 2026, with prices from $8,879 to $14,656, a $5,776 spread on the same certified stone. Helzberg Diamonds lists it at $14,656. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
I
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 307
Dimensions7.26 × 7.32 × 4.58 mm
L/W Ratio1.01
Top View
7.26 mm7.32 mm1.51 ctI / VS1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 307
Side View
Table 58.0%CrownGirdle: THN-STKPavilionCulet: NoneDepth 62.8%

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 3
Current: $14,656 AUD|Low: $8,879 AUD|High: $15,306 AUD|Avg: $11,446 AUD|-4.2%
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 28, 2026
Retailer 5$8,879 AUD
Retailer 4$9,423 AUD
Retailer 2$9,447 AUD
Retailer 3$9,578 AUD
Retailer 7$10,358 AUD
Retailer 6$11,247 AUD
Retailer 8$12,835 AUD
Retailer 9$14,413 AUD
Helzberg Diamonds$14,656 AUD

31 data points across 9 retailers

7 retailers$8,879 AUD to $14,656 AUD

A
Cheapest Retailer
-
$8,879 AUD
A
Retailer 2
-
$9,423 AUD
View
A
Retailer 3
-
$9,447 AUD
View
A
Retailer 4
-
$9,578 AUD
View
Retailer 5
-
$10,358 AUD
View
Price last confirmed 17 days ago
B+
Retailer 6
-
$11,247 AUD
View
Most Expensive
B+
Helzberg Diamonds
XZRMLMLHOHMPG · Nov 3
$14,656 AUD
$10,281 USD
View
6 more retailers have this diamond
Prices start from $8,879 AUDSave up to $5,776 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
$8,879 AUD