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Marquise|Natural|GIA

0.51ct J SI1 Marquise Natural Diamond

GD • J/SI1 • GIA 5556453982

Certificate GIA 5556453982

Diamond specifications and retailer prices

From $631 CAD
MYR 1,840 MYR
As of October 30, 2026
Save $209 CAD (25%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $840 CAD at Blue Nile · As of October 31, 2026
View at Blue Nile

About this 0.51ct natural marquise diamond

This 0.51ct natural marquise sits in the half to three-quarter carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 5556453982. Listed at 5 retailers as of October 30, 2026, with prices from $631 to $840, a $209 spread on the same certified stone. Blue Nile lists it at $840. 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
J
Color
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryGood
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 5556453982
Dimensions8.00 × 4.18 × 2.65 mm
L/W Ratio1.91
Culet sizeNone
Key to symbols
Crystal, Twinning Wisp
Top View
8.00 mm4.18 mm0.51 ctJ / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryGood
FluorescenceMedium
CertificateGIA 5556453982
Side View
Table 62.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 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: Oct 30
Current: $840 CAD|Low: $555 CAD|High: $887 CAD|Avg: $722 CAD|-5.4%
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 2, 2026
Retailer 5$631 CAD
Retailer 3$648 CAD
Retailer 4$700 CAD
Retailer 2$815 CAD
Blue Nile$840 CAD

41 data points across 5 retailers

5 retailers$631 CAD to $840 CAD

A
Cheapest Retailer
-
$631 CAD
MYR 1,840 MYR
B+
Retailer 2
-
$648 CAD
$464 USD
View
Final sale: no returns
B+
Retailer 3
-
$700 CAD
SGD 677 SGD
View
B+
Retailer 4
-
$815 CAD
£459 GBP
View
Most Expensive
B+
Blue Nile
29346053 · Oct 31
$840 CAD
$601 USD
View
4 more retailers have this diamond
Prices start from $631 CADSave up to $209 CAD

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
$631 CAD