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Marquise|Natural|GIA

1.51ct H SI1 Marquise Natural Diamond

VG • H/SI1 • GIA 1558321176

Certificate GIA 1558321176

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)
19 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 1558321176. Listed at 19 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
SymmetryExcellent
FluorescenceNone
Crown angle40.1°
Pavilion angle40.97°
OriginNatural
Grading LabGIA
CertificateGIA 1558321176
Dimensions11.00 × 5.94 × 3.90 mm
L/W Ratio1.85
Culet sizeNone
Top View
11.00 mm5.94 mm1.51 ctH / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1558321176
Side View
Table 58.0%Crown 40.1°Girdle: MED-THKPavilion 40.97°Culet: NoneDepth 65.7%

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: $13,816 AUD|Low: $10,930 AUD|High: $20,627 AUD|Avg: $13,521 AUD
Retailer 1
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
Retailer 22
November 6, 2026
Retailer 15$10,930 AUD
Retailer 6$11,004 AUD
Retailer 14$11,362 AUD
Retailer 8$11,437 AUD
Retailer 13$11,543 AUD
Retailer 5$11,594 AUD
Retailer 20$12,940 AUD
Retailer 19$12,962 AUD
Retailer 10$13,518 AUD
Retailer 1$13,816 AUD
Retailer 22$13,816 AUD
Retailer 18$14,489 AUD
Retailer 7$15,321 AUD
Retailer 16$15,410 AUD
Retailer 2$15,747 AUD
Retailer 3$15,747 AUD
Retailer 17$15,974 AUD
Retailer 12$16,250 AUD
Retailer 4$16,271 AUD
Retailer 11$16,867 AUD
Retailer 9$18,626 AUD
Retailer 21$20,627 AUD

29 data points across 22 retailers

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

Retailer 1
-
$10,930 AUD
Price last confirmed 26 days ago
Retailer 2
-
$11,437 AUD
View
Price last confirmed 17 days ago
Retailer 3
-
$11,543 AUD
View
Price last confirmed 19 days ago
Retailer 4
-
$11,594 AUD
View
Price last confirmed 15 days ago
B+
Retailer 5
-
$12,940 AUD
View
B
Retailer 6
-
$12,962 AUD
View
Retailer 7
-
$13,518 AUD
View
Price last confirmed 18 days ago
B
Retailer 8
-
$13,816 AUD
View
Retailer 9
-
$13,816 AUD
View
B
Retailer 10
-
$14,489 AUD
View
B
Retailer 11
-
$15,410 AUD
View
B
Retailer 12
-
$15,747 AUD
View
B
Retailer 13
-
$15,747 AUD
View
B
Retailer 14
-
$15,974 AUD
View
B
Retailer 15
-
$16,250 AUD
View
B
Retailer 16
-
$16,271 AUD
View
Retailer 17
-
$16,867 AUD
View
Price last confirmed 18 days ago
B
Retailer 18
-
$20,627 AUD
View
Most Expensive
B
NZ Jewellers
a2d2d991-c6f1-4507-ab22-f9d53492dd11 · Nov 5
$22,073 AUD
$15,166 USD
View
18 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