Marquise|Natural|GIA

1.50ct K SI2 Marquise Natural Diamond

GD • K/SI2 • GIA 5553836447

Certificate GIA 5553836447

Diamond specifications and retailer prices

From $8,348 AUD
As of November 6, 2026
Save $963 AUD (10%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $15,229 AUD at NZ Jewellers · As of October 17, 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 K colour (faint-tinted) and SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 5553836447. Listed at 19 retailers as of November 6, 2026, with a relatively tight 12% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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
K
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 5553836447
Dimensions10.94 × 5.89 × 3.81 mm
L/W Ratio1.86
Culet sizeNone
Key to symbols
Crystal, Feather, Cavity, Indented Natural, Needle, Natural
Top View
10.94 mm5.89 mm1.50 ctK / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 5553836447
Side View
Table 60.0%CrownGirdle: THK-ETKPavilionCulet: NoneDepth 64.6%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 6
Current: $15,229 AUD|Low: $6,159 AUD|High: $15,229 AUD|Avg: $9,472 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
October 21, 2026
Retailer 9$6,159 AUD
Retailer 10$7,182 AUD
Retailer 6$7,195 AUD
Retailer 3$7,679 AUD
Retailer 7$8,146 AUD
Retailer 4$8,249 AUD
Retailer 16$8,249 AUD
Retailer 17$8,249 AUD
Retailer 13$8,348 AUD
Retailer 2$8,778 AUD
Retailer 14$9,312 AUD
Retailer 5$9,518 AUD
Retailer 11$9,876 AUD
Retailer 8$10,042 AUD
Retailer 15$13,327 AUD
Retailer 12$13,487 AUD
NZ Jewellers$15,229 AUD

27 data points across 17 retailers

19 retailers$8,348 AUD to $9,312 AUD

Retailer 1
-
$7,182 AUD
Price last confirmed 20 days ago
Retailer 2
-
$7,195 AUD
View
Price last confirmed 18 days ago
Retailer 3
-
$7,679 AUD
View
Price last confirmed 18 days ago
Retailer 4
-
$8,146 AUD
View
Price last confirmed 20 days ago
Retailer 5
-
$8,249 AUD
View
Price last confirmed 46 days ago
Retailer 6
-
$8,249 AUD
View
Price last confirmed 18 days ago
Retailer 7
-
$8,249 AUD
View
Price last confirmed 21 days ago
Retailer 8
-
$8,249 AUD
View
Price last confirmed 22 days ago
B
Retailer 9
-
$8,348 AUD
View
Retailer 10
-
$8,778 AUD
View
Price last confirmed 17 days ago
B
Retailer 11
-
$9,312 AUD
View
Retailer 12
-
$9,518 AUD
View
Price last confirmed 46 days ago
Retailer 13
-
$9,518 AUD
View
Price last confirmed 19 days ago
Retailer 14
-
$9,518 AUD
View
Price last confirmed 62 days ago
Retailer 15
-
$10,042 AUD
View
Price last confirmed 23 days ago
Retailer 16
-
$13,327 AUD
View
Price last confirmed 19 days ago
Retailer 17
-
$13,487 AUD
View
Price last confirmed 19 days ago
Retailer 18
-
$15,229 AUD
View
Price last confirmed 47 days ago
Most Expensive
NZ Jewellers
0b5d5f89-6ae5-4032-a6f7-672c72bbc066 · Oct 17
$15,229 AUD
$10,464 USD
View
Price last confirmed 20 days ago
18 more retailers have this diamond
Prices start from $8,348 AUDSave up to $963 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
1.50ct Marquise
$8,348 AUD