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Marquise|Natural|GIA

0.30ct J SI1 Marquise Natural Diamond

GD • J/SI1 • GIA 6555044178

Certificate GIA 6555044178

Diamond specifications and retailer prices

From $249 CAD
SGD 241 SGD
As of October 31, 2026
Save $111 CAD (31%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $360 CAD at 77 Diamonds · As of October 31, 2026
View at 77 Diamonds

About this 0.3ct natural marquise diamond

This 0.3ct natural marquise sits in the sub-half-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 6555044178. Listed at 3 retailers as of October 31, 2026, with prices from $249 to $360, a $111 spread on the same certified stone. 77 Diamonds lists it at $360. 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

0.30
Carat
J
Color
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryGood
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6555044178
Dimensions6.39 × 3.45 × 2.30 mm
L/W Ratio1.85
Top View
6.39 mm3.45 mm0.30 ctJ / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryGood
FluorescenceFaint
CertificateGIA 6555044178
Side View
Table 60.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 66.7%

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: Oct 31
Current: $360 CAD|Low: $249 CAD|High: $366 CAD|Avg: $297 CAD|-0.7%
77 Diamonds
Retailer 2
Retailer 3
October 31, 2026
Retailer 3$249 CAD
Retailer 2$254 CAD
77 Diamonds$360 CAD

37 data points across 3 retailers

3 retailers$249 CAD to $360 CAD

B+
Cheapest Retailer
-
$249 CAD
SGD 241 SGD
B+
Retailer 2
-
$254 CAD
$182 USD
View
Final sale: no returns
Most Expensive
B+
77 Diamonds
MQCPNFTUJMWG · Oct 31
$360 CAD
£203 GBP
View
2 more retailers have this diamond
Prices start from $249 CADSave up to $111 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.

B+
0.30ct Marquise
$249 CAD