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Marquise|Natural|GIA

1.53ct K SI1 Marquise Natural Diamond

EX • K/SI1 • GIA 6552026847

Certificate GIA 6552026847

Diamond specifications and retailer prices

From $4,992 AUD
As of November 6, 2026
Save $5,603 AUD (53%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $12,075 AUD at NZ Jewellers · As of October 21, 2026
View at NZ Jewellers

About this 1.53ct natural marquise diamond

This 1.53ct natural marquise sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6552026847. Listed at 8 retailers as of November 4, 2026, with a 112% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.53
Carat
K
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6552026847
Dimensions12.65 × 5.73 × 3.59 mm
L/W Ratio2.21
Top View
12.65 mm5.73 mm1.53 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6552026847
Side View
Table 60.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 62.6%

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: $12,075 AUD|Low: $4,954 AUD|High: $12,754 AUD|Avg: $7,805 AUD|-5.3%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 5$4,992 AUD
Retailer 2$5,068 AUD
Retailer 9$6,506 AUD
Retailer 7$6,599 AUD
Retailer 6$6,931 AUD
Retailer 8$6,931 AUD
Retailer 3$7,310 AUD
Retailer 4$10,595 AUD
NZ Jewellers$12,075 AUD

45 data points across 9 retailers

8 retailers$4,992 AUD to $10,595 AUD

A
Cheapest Retailer
-
$4,992 AUD
A
Retailer 2
-
$5,068 AUD
View
Retailer 3
-
$6,599 AUD
View
Price last confirmed 12 days ago
Retailer 4
-
$6,931 AUD
View
Price last confirmed 15 days ago
Retailer 5
-
$6,931 AUD
View
Price last confirmed 15 days ago
A
Retailer 6
-
$7,310 AUD
View
B
Retailer 7
-
$10,595 AUD
View
Most Expensive
NZ Jewellers
9c74767e-67b5-4bba-adcc-074ca0e76757 · Oct 21
$12,075 AUD
$8,297 USD
View
Price last confirmed 16 days ago
7 more retailers have this diamond
Prices start from $4,992 AUDSave up to $5,603 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
1.53ct Marquise
$4,992 AUD