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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 $578 SGD
MYR 1,840 MYR
As of October 30, 2026
Save $191 SGD (25%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $769 SGD 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 $578 to $769, a $191 spread on the same certified stone. Blue Nile lists it at $769. 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
Colour
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: $769 SGD|Low: $508 SGD|High: $812 SGD|Avg: $661 SGD|-5.4%
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 2, 2026
Retailer 5$578 SGD
Retailer 3$593 SGD
Retailer 4$641 SGD
Retailer 2$746 SGD
Blue Nile$769 SGD

40 data points across 5 retailers

5 retailers$578 SGD to $769 SGD

A
Cheapest Retailer
-
$578 SGD
MYR 1,840 MYR
B+
Retailer 2
-
$593 SGD
$464 USD
View
Final sale: no returns
B+
Retailer 3
-
$641 SGD
View
B+
Retailer 4
-
$746 SGD
£459 GBP
View
Most Expensive
B+
Blue Nile
29346053 · Oct 31
$769 SGD
$601 USD
View
4 more retailers have this diamond
Prices start from $578 SGDSave up to $191 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
$578 SGD