CaratHunter
Plans
Marquise|Natural|GIA

1.51ct K SI2 Marquise Natural Diamond

ID • K/SI2 • GIA 1553383300

Certificate GIA 1553383300

Diamond specifications and retailer prices

From $6,570 AUD
As of November 5, 2026
Save $8,156 AUD (55%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $14,726 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 K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1553383300. Listed at 11 retailers as of November 5, 2026, with prices from $6,570 to $14,726, a $8,156 spread on the same certified stone. NZ Jewellers lists it at $14,726. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.51
Carat
K
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishVery Good
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1553383300
Dimensions11.04 × 5.99 × 3.80 mm
L/W Ratio1.84
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Feather, Knot, Crystal, Cavity, Needle, Indented Natural
Top View
11.04 mm5.99 mm1.51 ctK / SI2
OriginNatural
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1553383300
Side View
Table 61.0%CrownGirdle: MED-VTKPavilionCulet: NDepth 63.4%

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 5
Current: $14,726 AUD|Low: $6,570 AUD|High: $16,353 AUD|Avg: $10,054 AUD|-10.0%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 7$6,570 AUD
Retailer 11$7,324 AUD
Retailer 10$7,610 AUD
Retailer 6$8,197 AUD
Retailer 8$8,431 AUD
Retailer 4$8,444 AUD
Retailer 3$8,489 AUD
Retailer 2$9,563 AUD
Retailer 9$12,879 AUD
Retailer 5$12,936 AUD
NZ Jewellers$14,726 AUD

42 data points across 11 retailers

11 retailers$6,570 AUD to $14,726 AUD

A
Cheapest Retailer
-
$6,570 AUD
B+
Retailer 2
-
$7,324 AUD
View
B+
Retailer 3
-
$7,610 AUD
View
B+
Retailer 4
-
$8,197 AUD
View
B+
Retailer 5
-
$8,431 AUD
View
B+
Retailer 6
-
$8,444 AUD
View
B+
Retailer 7
-
$8,489 AUD
View
B
Retailer 8
-
$9,563 AUD
View
B
Retailer 9
-
$12,879 AUD
View
B
Retailer 10
-
$12,936 AUD
View
Most Expensive
B
NZ Jewellers
0cf6a239-952c-461e-9423-3f241acea6c2 · Nov 5
$14,726 AUD
$10,118 USD
View
10 more retailers have this diamond
Prices start from $6,570 AUDSave up to $8,156 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
1.51ct Marquise
$6,570 AUD