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Marquise|Natural|GIA

1.51ct H SI1 Marquise Natural Diamond

VG • H/SI1 • GIA 2557673649

Certificate GIA 2557673649

Diamond specifications and retailer prices

From $12,940 AUD
As of November 6, 2026
Save $9,133 AUD (41%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $22,073 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 2557673649. Listed at 16 retailers as of November 5, 2026, with prices from $12,940 to $22,073, a $9,133 spread on the same certified stone. NZ Jewellers lists it at $22,073. 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
H
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle34.6°
Pavilion angle40.4°
OriginNatural
Grading LabGIA
CertificateGIA 2557673649
Dimensions11.04 × 5.91 × 3.82 mm
L/W Ratio1.87
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Cloud, Feather, Needle, Natural
Top View
11.04 mm5.91 mm1.51 ctH / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2557673649
Side View
Table 63.0%Crown 34.6°Girdle: STK-VTKPavilion 40.4°Culet: NoneDepth 64.6%

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 6
Current: $22,073 AUD|Low: $12,880 AUD|High: $22,073 AUD|Avg: $14,226 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
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
November 6, 2026
Retailer 9$12,880 AUD
Retailer 16$12,940 AUD
Retailer 14$12,962 AUD
Retailer 8$13,273 AUD
Retailer 2$13,816 AUD
Retailer 3$13,816 AUD
Retailer 13$14,489 AUD
Retailer 11$14,879 AUD
Retailer 15$14,883 AUD
Retailer 7$15,410 AUD
Retailer 4$15,747 AUD
Retailer 5$15,747 AUD
Retailer 12$15,974 AUD
Retailer 10$16,250 AUD
Retailer 6$16,271 AUD
Retailer 17$20,627 AUD
NZ Jewellers$22,073 AUD

25 data points across 17 retailers

16 retailers$12,940 AUD to $22,073 AUD

B+
Cheapest Retailer
-
$12,940 AUD
B+
Retailer 2
-
$12,962 AUD
View
Retailer 3
-
$13,273 AUD
View
Price last confirmed 16 days ago
B+
Retailer 4
-
$13,816 AUD
View
Retailer 5
-
$13,816 AUD
View
B
Retailer 6
-
$14,489 AUD
View
B
Retailer 7
-
$14,879 AUD
View
B
Retailer 8
-
$14,883 AUD
View
B
Retailer 9
-
$15,410 AUD
View
B
Retailer 10
-
$15,747 AUD
View
B
Retailer 11
-
$15,747 AUD
View
B
Retailer 12
-
$15,974 AUD
View
B
Retailer 13
-
$16,250 AUD
View
B
Retailer 14
-
$16,271 AUD
View
B
Retailer 15
-
$20,627 AUD
View
Most Expensive
C
NZ Jewellers
bdc42ab6-79b9-4906-bbc7-3852fac9c939 · Nov 5
$22,073 AUD
$15,166 USD
View
15 more retailers have this diamond
Prices start from $12,940 AUDSave up to $9,133 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
$12,940 AUD