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Marquise|Natural|GIA

1.51ct D SI1 Marquise Natural Diamond

EX • D/SI1 • GIA 2548785636

Certificate GIA 2548785636

Diamond specifications and retailer prices

From $14,652 AUD
$10,292 USD
As of October 28, 2026
Save $12,358 AUD (46%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $27,010 AUD at NZ Jewellers · As of October 27, 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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2548785636. Listed at 15 retailers as of October 27, 2026, with prices from $14,652 to $27,010, a $12,358 spread on the same certified stone. NZ Jewellers lists it at $27,010. 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
D
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2548785636
Dimensions11.46 × 5.96 × 3.77 mm
L/W Ratio1.92
Top View
11.46 mm5.96 mm1.51 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2548785636
Side View
Table 62.0%CrownGirdle: THN-VTKPavilionCulet: NoneDepth 63.2%

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: Oct 28
Current: $27,010 AUD|Low: $13,831 AUD|High: $27,010 AUD|Avg: $18,512 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
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
October 29, 2026
Retailer 14$13,831 AUD
Retailer 19$14,652 AUD
Retailer 12$14,924 AUD
Retailer 17$15,532 AUD
Retailer 20$15,792 AUD
Retailer 16$16,206 AUD
Retailer 10$16,813 AUD
Retailer 4$16,976 AUD
Retailer 18$17,630 AUD
Retailer 2$17,701 AUD
Retailer 6$18,097 AUD
Retailer 21$18,935 AUD
Retailer 9$18,942 AUD
Retailer 5$19,019 AUD
Retailer 8$19,019 AUD
Retailer 7$19,646 AUD
Retailer 15$19,715 AUD
Retailer 3$19,967 AUD
Retailer 11$21,470 AUD
Retailer 13$25,445 AUD
NZ Jewellers$27,010 AUD

14 data points across 21 retailers

15 retailers$14,652 AUD to $27,010 AUD

A
Cheapest Retailer
-
$14,652 AUD
$10,292 USD
B+
Retailer 2
-
$15,532 AUD
CA$15,154 CAD
View
B+
Retailer 3
-
$15,792 AUD
$11,093 USD
View
B+
Retailer 4
-
$16,976 AUD
$11,925 USD
View
B+
Retailer 5
-
$17,630 AUD
$12,384 USD
View
B+
Retailer 6
-
$17,701 AUD
£9,791 GBP
View
B
Retailer 7
-
$18,097 AUD
$12,712 USD
View
B+
Retailer 8
-
$18,935 AUD
$13,301 USD
View
B+
Retailer 9
-
$19,019 AUD
$13,360 USD
View
B+
Retailer 10
-
$19,019 AUD
$13,360 USD
View
B+
Retailer 11
-
$19,646 AUD
$13,800 USD
View
B+
Retailer 12
-
$19,715 AUD
€13,189 EUR
View
B
Retailer 13
-
$19,967 AUD
$14,026 USD
View
B
Retailer 14
-
$25,445 AUD
£14,074 GBP
View
Most Expensive
B
NZ Jewellers
be492634-6ba2-4243-8d8b-db70219f853b · Oct 27
$27,010 AUD
$18,973 USD
View
14 more retailers have this diamond
Prices start from $14,652 AUDSave up to $12,358 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
$14,652 AUD