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Marquise|Natural|GIA

1.51ct M SI1 Marquise Natural Diamond

ID • M/SI1 • GIA 6532967541

Certificate GIA 6532967541

Diamond specifications and retailer prices

From $7,118 AUD
As of November 5, 2026
Save $3,950 AUD (36%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $15,068 AUD at NZ Jewellers · As of November 3, 2026
View at NZ Jewellers

About this 1.51ct natural marquise diamond

This 1.51ct natural marquise sits in the one-and-a-half to two carat band, graded M colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6532967541. Listed at 12 retailers as of October 31, 2026, with a 55% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
M
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6532967541
Dimensions11.39 × 6.03 × 3.85 mm
L/W Ratio1.89
Top View
11.39 mm6.03 mm1.51 ctM / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6532967541
Side View
Table 59.0%CrownGirdle: UNDPavilionCulet: NoneDepth 63.8%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $15,068 AUD|Low: $2,030 AUD|High: $15,068 AUD|Avg: $8,518 AUD
NZ Jewellers
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 4, 2026
Retailer 5$2,030 AUD
Retailer 13$7,118 AUD
Retailer 9$7,315 AUD
Retailer 3$7,634 AUD
Retailer 4$8,063 AUD
Retailer 8$8,162 AUD
Retailer 10$8,162 AUD
Retailer 11$8,162 AUD
Retailer 2$9,009 AUD
Retailer 12$9,418 AUD
Retailer 6$9,841 AUD
Retailer 7$11,068 AUD
NZ Jewellers$15,068 AUD

41 data points across 13 retailers

12 retailers$7,118 AUD to $11,068 AUD

B
Cheapest Retailer
-
$7,118 AUD
B
Retailer 2
-
$7,315 AUD
View
B
Retailer 3
-
$7,634 AUD
View
B
Retailer 4
-
$8,063 AUD
View
B
Retailer 5
-
$8,162 AUD
View
B
Retailer 6
-
$8,162 AUD
View
Retailer 7
-
$8,162 AUD
View
Price last confirmed 8 days ago
B
Retailer 8
-
$9,009 AUD
View
B
Retailer 9
-
$9,418 AUD
View
B
Retailer 10
-
$9,841 AUD
View
B
Retailer 11
-
$11,068 AUD
View
Most Expensive
NZ Jewellers
48fe5017-e10d-4135-8e2c-e8e6e706da67 · Nov 3
$15,068 AUD
$10,353 USD
View
Price under review
11 more retailers have this diamond
Prices start from $7,118 AUDSave up to $3,950 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.

B
1.51ct Marquise
$7,118 AUD