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Marquise|Natural|GIA

0.51ct K SI2 Marquise Natural Diamond

GD • K/SI2 • GIA 6194969419

Certificate GIA 6194969419

Diamond specifications and retailer prices

From $731 SGD
As of November 1, 2026
Save $1,224 SGD (63%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $2,657 SGD at NZ Jewellers · As of November 7, 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 SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6194969419. Listed at 13 retailers as of November 1, 2026, with a 168% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

0.51
Carat
K
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6194969419
Dimensions7.54 × 4.39 × 2.65 mm
L/W Ratio1.72
Top View
7.54 mm4.39 mm0.51 ctK / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6194969419
Side View
Table 55.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 60.4%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $2,657 SGD|Low: $731 SGD|High: $2,657 SGD|Avg: $1,173 SGD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 7, 2026
Retailer 7$731 SGD
Retailer 9$768 SGD
Retailer 3$798 SGD
Retailer 8$827 SGD
Retailer 11$827 SGD
Retailer 10$886 SGD
Retailer 2$957 SGD
Retailer 4$1,034 SGD
Retailer 5$1,130 SGD
Retailer 6$1,954 SGD
NZ Jewellers$2,657 SGD

42 data points across 11 retailers

13 retailers$731 SGD to $1,954 SGD

B+
Cheapest Retailer
-
$731 SGD
B+
Retailer 2
-
$768 SGD
View
B+
Retailer 3
-
$793 SGD
View
B+
Retailer 4
-
$798 SGD
View
B+
Retailer 5
-
$827 SGD
View
B+
Retailer 6
-
$827 SGD
View
B
Retailer 7
-
$886 SGD
View
B
Retailer 8
-
$938 SGD
View
B
Retailer 9
-
$957 SGD
View
B
Retailer 10
-
$1,034 SGD
View
B
Retailer 11
-
$1,130 SGD
View
C
Retailer 12
-
$1,954 SGD
View
Most Expensive
NZ Jewellers
a755aec9-ce16-4e04-8139-e7b5f382ec80 · Nov 7
$2,657 SGD
$2,073 USD
View
Price under review
12 more retailers have this diamond
Prices start from $731 SGDSave up to $1,224 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.

B+
0.51ct Marquise
$731 SGD