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Marquise|Natural|GIA

0.31ct I SI2 Marquise Natural Diamond

GD • I/SI2 • GIA 6552623537

Certificate GIA 6552623537

Diamond specifications and retailer prices

From £154 GBP
SGD 279 SGD
As of November 2, 2026
Save £68 GBP (31%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £222 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 6552623537. Listed at 4 retailers as of November 2, 2026, with prices from £154 to £222, a £68 spread on the same certified stone. 77 Diamonds lists it at £222. 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
PolishVery Good
SymmetryGood
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6552623537
Dimensions6.83 × 3.57 × 2.26 mm
L/W Ratio1.91
Culet sizeNone
Key to symbols
Cloud, Twinning Wisp, Feather
Top View
6.83 mm3.57 mm0.31 ctI / SI2
OriginNatural
CutGood
PolishVery Good
SymmetryGood
FluorescenceFaint
CertificateGIA 6552623537
Side View
Table 58.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 63.3%

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: £222 GBP|Low: £131 GBP|High: £224 GBP|Avg: £181 GBP|+2.2%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
November 3, 2026
Retailer 3£154 GBP
Retailer 4£155 GBP
Retailer 2£205 GBP
77 Diamonds£222 GBP

39 data points across 4 retailers

4 retailers£154 GBP to £222 GBP

B+
Cheapest Retailer
-
£154 GBP
SGD 279 SGD
B+
Retailer 2
-
£155 GBP
$208 USD
View
Final sale: no returns
B+
Retailer 3
-
£205 GBP
$275 USD
View
Most Expensive
B+
77 Diamonds
MQCPJADCGQFX · Nov 3
£222 GBP
View
3 more retailers have this diamond
Prices start from £154 GBPSave up to £68 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
£154 GBP