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Marquise|Natural|GIA

0.31ct J SI1 Marquise Natural Diamond

GD • J/SI1 • GIA 3565350629

Certificate GIA 3565350629

Diamond specifications and retailer prices

From £205 GBP
$275 USD
As of October 28, 2026
Save £35 GBP (15%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £240 GBP at 77 Diamonds · As of November 2, 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 3565350629. Listed at 2 retailers as of October 28, 2026, with prices from £205 to £240, a £35 spread on the same certified stone. 77 Diamonds lists it at £240. 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
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryGood
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 3565350629
Dimensions6.65 × 3.51 × 2.25 mm
L/W Ratio1.89
Culet sizeNone
Key to symbols
Twinning Wisp, Crystal, Feather
Top View
6.65 mm3.51 mm0.31 ctJ / SI1
OriginNatural
CutGood
PolishVery Good
SymmetryGood
FluorescenceFaint
CertificateGIA 3565350629
Side View
Table 62.0%CrownGirdle: MED-VTKPavilionCuletDepth 64.1%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Oct 28
Current: £240 GBP|Low: £205 GBP|High: £240 GBP|Avg: £217 GBP|+7.3%
77 Diamonds
Retailer 2
November 2, 2026
Retailer 2£205 GBP
77 Diamonds£240 GBP

33 data points across 2 retailers

2 retailers£205 GBP to £240 GBP

B+
Cheapest Retailer
-
£205 GBP
$275 USD
Most Expensive
B
77 Diamonds
MQCPDBJWFPUZ · Nov 2
£240 GBP
View
1 more retailer has this diamond
Prices start from £205 GBPSave up to £35 GBP

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
£205 GBP