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Marquise|Natural|GIA

0.31ct I SI2 Marquise Natural Diamond

GD • I/SI2 • GIA 6565353377

Certificate GIA 6565353377

Diamond specifications and retailer prices

From £180 GBP
SGD 327 SGD
As of November 2, 2026
Save £50 GBP (22%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £231 GBP 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6565353377. Listed at 3 retailers as of November 2, 2026, with prices from £180 to £231, a £50 spread on the same certified stone. 77 Diamonds lists it at £231. 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
I
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6565353377
Dimensions6.69 × 3.48 × 2.29 mm
L/W Ratio1.92
Culet sizeNone
Key to symbols
Feather, Crystal
Top View
6.69 mm3.48 mm0.31 ctI / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryGood
FluorescenceNone
CertificateGIA 6565353377
Side View
Table 60.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 65.9%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: £231 GBP|Low: £180 GBP|High: £233 GBP|Avg: £210 GBP|+4.4%
77 Diamonds
Retailer 2
Retailer 3
November 3, 2026
Retailer 3£180 GBP
Retailer 2£209 GBP
77 Diamonds£231 GBP

34 data points across 3 retailers

3 retailers£180 GBP to £231 GBP

B+
Cheapest Retailer
-
£180 GBP
SGD 327 SGD
B+
Retailer 2
-
£209 GBP
$280 USD
View
Most Expensive
B
77 Diamonds
MQCPVRFVPVXE · Nov 3
£231 GBP
View
2 more retailers have this diamond
Prices start from £180 GBPSave up to £50 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
£180 GBP