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Marquise|Natural|GIA

1.51ct G VVS1 Marquise Natural Diamond

VG • G/VVS1 • GIA 612

Certificate GIA 612

Diamond specifications and retailer prices

From $18,846 AUD
As of November 4, 2026
Save $8,015 AUD (30%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $26,861 AUD at Helzberg Diamonds · As of November 6, 2026
View at Helzberg Diamonds

About this 1.51ct natural marquise diamond

This 1.51ct natural marquise sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and VVS1 clarity (very-very-slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA. Listed at 4 retailers as of November 4, 2026, with prices from $18,846 to $26,861, a $8,015 spread on the same certified stone. Helzberg Diamonds lists it at $26,861. 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
G
Colour
VVS1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 612
Dimensions11.21 × 6.05 × 3.85 mm
L/W Ratio1.85
Top View
11.21 mm6.05 mm1.51 ctG / VVS1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 612
Side View
Table 61.0%CrownGirdle: Slightly Thick to Very ThickPavilionCulet: NDepth 63.7%

Caratlytics Score

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

Price History

Last verified: Nov 4
Current: $26,861 AUD|Low: $18,829 AUD|High: $28,987 AUD|Avg: $23,282 AUD|-7.3%
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
November 7, 2026
Retailer 4$18,846 AUD
Retailer 2$20,808 AUD
Retailer 3$22,027 AUD
Helzberg Diamonds$26,861 AUD

43 data points across 4 retailers

4 retailers$18,846 AUD to $26,861 AUD

A
Cheapest Retailer
-
$18,846 AUD
A
Retailer 2
-
$20,808 AUD
View
B+
Retailer 3
-
$22,027 AUD
View
Most Expensive
B
Helzberg Diamonds
XZRNLMMGMMJHO · Nov 6
$26,861 AUD
$18,456 USD
View
3 more retailers have this diamond
Prices start from $18,846 AUDSave up to $8,015 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 Marquise
$18,846 AUD