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Marquise|Natural|GIA

0.31ct J SI1 Marquise Natural Diamond

GD • J/SI1 • GIA 7553620389

Certificate GIA 7553620389

Diamond specifications and retailer prices

From $255 CAD
SGD 247 SGD
As of November 2, 2026
Save $111 CAD (30%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $367 CAD at 77 Diamonds · As of November 3, 2026
View at 77 Diamonds

About this 0.31ct natural marquise diamond

This 0.31ct 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 7553620389. Listed at 3 retailers as of November 2, 2026, with prices from $255 to $367, a $111 spread on the same certified stone. 77 Diamonds lists it at $367. 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

0.31
Carat
J
Color
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7553620389
Dimensions7.82 × 3.29 × 2.12 mm
L/W Ratio2.38
Culet sizeNone
Key to symbols
Crystal, Feather
Top View
7.82 mm3.29 mm0.31 ctJ / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryGood
FluorescenceNone
CertificateGIA 7553620389
Side View
Table 62.0%CrownGirdle: THN-VTKPavilionCulet: NoneDepth 64.3%

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 2
Current: $367 CAD|Low: $255 CAD|High: $370 CAD|Avg: $301 CAD|+2.4%
77 Diamonds
Retailer 2
Retailer 3
November 3, 2026
Retailer 3$255 CAD
Retailer 2$260 CAD
77 Diamonds$367 CAD

39 data points across 3 retailers

3 retailers$255 CAD to $367 CAD

B+
Cheapest Retailer
-
$255 CAD
SGD 247 SGD
B+
Retailer 2
-
$260 CAD
$186 USD
View
Final sale: no returns
Most Expensive
B+
77 Diamonds
MQCPHFBDYTC3 · Nov 3
$367 CAD
£207 GBP
View
2 more retailers have this diamond
Prices start from $255 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+
0.31ct Marquise
$255 CAD