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Marquise|Natural|GIA

1.50ct D SI2 Marquise Natural Diamond

GD • D/SI2 • GIA 6551200028

Certificate GIA 6551200028

Diamond specifications and retailer prices

From $12,826 AUD
As of November 6, 2026
Save $9,050 AUD (41%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $21,876 AUD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.5ct natural marquise diamond

This 1.5ct natural marquise sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6551200028. Listed at 13 retailers as of November 5, 2026, with prices from $12,826 to $21,876, a $9,050 spread on the same certified stone. NZ Jewellers lists it at $21,876. 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

1.50
Carat
D
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle33.7°
Pavilion angle37.5°
OriginNatural
Grading LabGIA
CertificateGIA 6551200028
Dimensions11.31 × 6.06 × 3.52 mm
L/W Ratio1.87
Girdle conditionFaceted
Culet sizeVery Small
Key to symbols
Feather, Twinning Wisp, Natural
Top View
11.31 mm6.06 mm1.50 ctD / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6551200028
Side View
Table 66.0%Crown 33.7°Girdle: THK-VTKPavilion 37.5°Culet: Very SmallDepth 58.1%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $21,876 AUD|Low: $11,528 AUD|High: $21,876 AUD|Avg: $13,505 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
November 6, 2026
Retailer 6$11,528 AUD
Retailer 11$12,826 AUD
Retailer 9$12,845 AUD
Retailer 13$13,691 AUD
Retailer 8$14,358 AUD
Retailer 10$14,753 AUD
Retailer 5$15,270 AUD
Retailer 3$15,616 AUD
Retailer 14$15,616 AUD
Retailer 7$15,829 AUD
Retailer 2$16,101 AUD
Retailer 4$16,126 AUD
Retailer 12$20,443 AUD
NZ Jewellers$21,876 AUD

31 data points across 14 retailers

13 retailers$12,826 AUD to $21,876 AUD

A
Cheapest Retailer
-
$12,826 AUD
A
Retailer 2
-
$12,845 AUD
View
B+
Retailer 3
-
$13,691 AUD
View
B+
Retailer 4
-
$14,358 AUD
View
B+
Retailer 5
-
$14,753 AUD
View
B+
Retailer 6
-
$15,270 AUD
View
B+
Retailer 7
-
$15,616 AUD
View
B+
Retailer 8
-
$15,616 AUD
View
B+
Retailer 9
-
$15,829 AUD
View
B
Retailer 10
-
$16,101 AUD
View
B
Retailer 11
-
$16,126 AUD
View
B
Retailer 12
-
$20,443 AUD
View
Most Expensive
B
NZ Jewellers
b1de0659-68d2-4464-abe8-167f7ccc76f8 · Nov 5
$21,876 AUD
$15,031 USD
View
12 more retailers have this diamond
Prices start from $12,826 AUDSave up to $9,050 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
1.50ct Marquise
$12,826 AUD