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Marquise|Natural|GIA

1.51ct D SI1 Marquise Natural Diamond

VG • D/SI1 • GIA 2547391481

Certificate GIA 2547391481

Diamond specifications and retailer prices

From $17,993 AUD
$12,639 USD
As of November 1, 2026
Save $11,377 AUD (39%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $29,370 AUD at NZ Jewellers · As of October 30, 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 D colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 2547391481. Listed at 13 retailers as of October 30, 2026, with prices from $17,993 to $29,370, a $11,377 spread on the same certified stone. NZ Jewellers lists it at $29,370. 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
D
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceMedium
Crown angle44.45°
Pavilion angle39.09°
OriginNatural
Grading LabGIA
CertificateGIA 2547391481
Dimensions10.51 × 5.75 × 3.90 mm
L/W Ratio1.83
Top View
10.51 mm5.75 mm1.51 ctD / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 2547391481
Side View
Table 61.0%Crown 44.45°GirdlePavilion 39.09°Culet: NDepth 67.8%

Caratlytics Score

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

Price History

Last verified: Nov 1
Current: $29,370 AUD|Low: $15,640 AUD|High: $29,370 AUD|Avg: $21,177 AUD|+2.5%
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
Retailer 14
Retailer 15
Retailer 16
November 2, 2026
Retailer 8$15,640 AUD
Retailer 6$17,327 AUD
Retailer 15$17,993 AUD
Retailer 14$18,046 AUD
Retailer 13$18,641 AUD
Retailer 12$19,187 AUD
Retailer 3$19,451 AUD
Retailer 2$19,715 AUD
Retailer 5$20,748 AUD
Retailer 4$21,072 AUD
Retailer 7$21,687 AUD
Retailer 16$21,882 AUD
Retailer 9$22,197 AUD
Retailer 11$25,889 AUD
Retailer 10$27,521 AUD
NZ Jewellers$29,370 AUD

41 data points across 16 retailers

13 retailers$17,993 AUD to $29,370 AUD

B
Cheapest Retailer
-
$17,993 AUD
$12,639 USD
B
Retailer 2
-
$18,046 AUD
$12,676 USD
View
B
Retailer 3
-
$18,641 AUD
$13,094 USD
View
Final sale: no returns
Retailer 4
-
$19,187 AUD
View
Price last confirmed 9 days ago
B
Retailer 5
-
$19,451 AUD
$13,663 USD
View
B
Retailer 6
-
$19,715 AUD
£10,904 GBP
View
B
Retailer 7
-
$20,748 AUD
$14,574 USD
View
B
Retailer 8
-
$21,072 AUD
$14,802 USD
View
B
Retailer 9
-
$21,882 AUD
$15,371 USD
View
B
Retailer 10
-
$22,197 AUD
€14,850 EUR
View
B
Retailer 11
-
$25,889 AUD
ZAR 293,788 ZAR
View
B
Retailer 12
-
$27,521 AUD
£15,222 GBP
View
Most Expensive
C
NZ Jewellers
28e9a68e-f21e-4468-bd7e-111a0e47f28d · Oct 30
$29,370 AUD
$20,631 USD
View
12 more retailers have this diamond
Prices start from $17,993 AUDSave up to $11,377 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
$17,993 AUD