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Marquise|Natural|GIA

1.51ct H SI1 Marquise Natural Diamond

GD • H/SI1 • GIA 7556154054

Certificate GIA 7556154054

Diamond specifications and retailer prices

From $11,230 AUD
As of November 6, 2026
Save $10,307 AUD (48%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $21,537 AUD at NZ Jewellers · As of November 3, 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 standard cut grade stated by the retailer rather than the lab and certified by GIA 7556154054. Listed at 8 retailers as of November 3, 2026, with prices from $11,230 to $21,537, a $10,307 spread on the same certified stone. NZ Jewellers lists it at $21,537. 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
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Crown angle35.97°
Pavilion angle36.24°
OriginNatural
Grading LabGIA
CertificateGIA 7556154054
Dimensions11.07 × 6.23 × 3.46 mm
L/W Ratio1.78
Girdle conditionExtremely Thick
Key to symbols
Twinning Wisp, Feather, Cavity, Knot, Indented Natural
Top View
11.07 mm6.23 mm1.51 ctH / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 7556154054
Side View
Table 67.0%Crown 35.97°GirdlePavilion 36.24°CuletDepth 55.6%

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: $21,537 AUD|Low: $11,230 AUD|High: $21,537 AUD|Avg: $13,817 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 6$11,230 AUD
Retailer 9$11,672 AUD
Retailer 7$11,825 AUD
Retailer 2$12,132 AUD
Retailer 5$12,877 AUD
Retailer 8$12,921 AUD
Retailer 4$13,075 AUD
Retailer 10$13,957 AUD
Retailer 3$17,945 AUD
NZ Jewellers$21,537 AUD

10 data points across 10 retailers

8 retailers$11,230 AUD to $21,537 AUD

B+
Cheapest Retailer
-
$11,230 AUD
B
Retailer 2
-
$11,825 AUD
View
B
Retailer 3
-
$12,132 AUD
View
B
Retailer 4
-
$12,877 AUD
View
B
Retailer 5
-
$12,921 AUD
View
B
Retailer 6
-
$13,075 AUD
View
C
Retailer 7
-
$17,945 AUD
View
Most Expensive
C
NZ Jewellers
83094239-06f5-4d17-a5c7-0f7a72abd881 · Nov 3
$21,537 AUD
$14,798 USD
View
7 more retailers have this diamond
Prices start from $11,230 AUDSave up to $10,307 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
$11,230 AUD