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Marquise|Natural|GIA

0.51ct K SI1 Marquise Natural Diamond

EX • K/SI1 • GIA 6542875575

Certificate GIA 6542875575

Diamond specifications and retailer prices

From $525 SGD
As of November 5, 2026
Save $1,485 SGD (74%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $2,010 SGD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 0.51ct natural marquise diamond

This 0.51ct natural marquise sits in the half to three-quarter 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 6542875575. Listed at 11 retailers as of November 5, 2026, with prices from $525 to $2,010, a $1,485 spread on the same certified stone. NZ Jewellers lists it at $2,010. 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

0.51
Carat
K
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6542875575
Dimensions8.25 × 4.10 × 2.70 mm
L/W Ratio2.01
Top View
8.25 mm4.10 mm0.51 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6542875575
Side View
Table 57.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 65.9%

Caratlytics Score

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

Price History

Last verified: Nov 5
Current: $2,010 SGD|Low: $525 SGD|High: $2,073 SGD|Avg: $789 SGD|-3.0%
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 9$525 SGD
Retailer 7$565 SGD
Retailer 3$571 SGD
Retailer 4$571 SGD
Retailer 8$605 SGD
Retailer 10$605 SGD
Retailer 2$640 SGD
Retailer 5$642 SGD
Retailer 11$798 SGD
Retailer 6$1,210 SGD
NZ Jewellers$2,010 SGD

36 data points across 11 retailers

11 retailers$525 SGD to $2,010 SGD

A
Cheapest Retailer
-
$525 SGD
A
Retailer 2
-
$565 SGD
View
Retailer 3
-
$571 SGD
View
Price last confirmed 8 days ago
A
Retailer 4
-
$571 SGD
View
A
Retailer 5
-
$605 SGD
View
A
Retailer 6
-
$605 SGD
View
A
Retailer 7
-
$640 SGD
View
A
Retailer 8
-
$642 SGD
View
B+
Retailer 9
-
$798 SGD
View
B
Retailer 10
-
$1,210 SGD
View
Most Expensive
B
NZ Jewellers
6fbe9dc0-4941-4bfd-b195-6b925748c946 · Nov 5
$2,010 SGD
$1,574 USD
View
10 more retailers have this diamond
Prices start from $525 SGDSave up to $1,485 SGD

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
0.51ct Marquise
$525 SGD