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Marquise|Natural|GIA

1.51ct K SI2 Marquise Natural Diamond

GD • K/SI2 • GIA 6531852982

Certificate GIA 6531852982

Diamond specifications and retailer prices

From $8,495 AUD
As of November 5, 2026
Save $9,489 AUD (53%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $17,984 AUD at NZ Jewellers · As of November 5, 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 K colour (faint-tinted) and SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6531852982. Listed at 12 retailers as of November 5, 2026, with prices from $8,495 to $17,984, a $9,489 spread on the same certified stone. NZ Jewellers lists it at $17,984. 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
K
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle42.1°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6531852982
Dimensions10.85 × 5.95 × 3.84 mm
L/W Ratio1.82
Top View
10.85 mm5.95 mm1.51 ctK / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6531852982
Side View
Table 61.0%Crown 42.1°Girdle: MED-VTKPavilion 40.8°Culet: NoneDepth 64.5%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $17,984 AUD|Low: $8,399 AUD|High: $17,984 AUD|Avg: $11,226 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
November 6, 2026
Retailer 10$8,399 AUD
Retailer 4$8,473 AUD
Retailer 11$8,991 AUD
Retailer 12$9,741 AUD
Retailer 9$9,891 AUD
Retailer 5$10,039 AUD
Retailer 8$10,277 AUD
Retailer 2$10,426 AUD
Retailer 3$11,240 AUD
Retailer 7$11,699 AUD
Retailer 6$14,946 AUD
NZ Jewellers$17,984 AUD

44 data points across 12 retailers

12 retailers$8,495 AUD to $17,984 AUD

B+
Cheapest Retailer
-
$8,495 AUD
Retailer 2
-
$8,991 AUD
View
Price last confirmed 8 days ago
B
Retailer 3
-
$9,067 AUD
View
B
Retailer 4
-
$9,741 AUD
View
B
Retailer 5
-
$9,891 AUD
View
B
Retailer 6
-
$10,039 AUD
View
B
Retailer 7
-
$10,277 AUD
View
B
Retailer 8
-
$10,426 AUD
View
B
Retailer 9
-
$11,240 AUD
View
B
Retailer 10
-
$11,699 AUD
View
C
Retailer 11
-
$14,946 AUD
View
Most Expensive
C
NZ Jewellers
7650da54-d293-4295-bcaf-0e4085a6c8ca · Nov 5
$17,984 AUD
$12,357 USD
View
11 more retailers have this diamond
Prices start from $8,495 AUDSave up to $9,489 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
$8,495 AUD