CaratHunter
Plans
Marquise|Natural|GIA

0.31ct I SI2 Marquise Natural Diamond

GD • I/SI2 • GIA 1555942948

Certificate GIA 1555942948

Diamond specifications and retailer prices

From £165 GBP
SGD 300 SGD
As of November 2, 2026
Save £77 GBP (32%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £242 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 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 1555942948. Listed at 3 retailers as of November 2, 2026, with prices from £165 to £242, a £77 spread on the same certified stone. 77 Diamonds lists it at £242. 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
PolishGood
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1555942948
Dimensions6.65 × 3.53 × 2.22 mm
L/W Ratio1.88
Culet sizeNone
Key to symbols
Twinning Wisp
Top View
6.65 mm3.53 mm0.31 ctI / SI2
OriginNatural
CutGood
PolishGood
SymmetryGood
FluorescenceNone
CertificateGIA 1555942948
Side View
Table 63.0%CrownGirdle: VTK-ETKPavilionCulet: NoneDepth 62.9%

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: £242 GBP|Low: £165 GBP|High: £242 GBP|Avg: £214 GBP|+6.2%
77 Diamonds
Retailer 2
Retailer 3
November 2, 2026
Retailer 3£165 GBP
Retailer 2£205 GBP
77 Diamonds£242 GBP

35 data points across 3 retailers

3 retailers£165 GBP to £242 GBP

B+
Cheapest Retailer
-
£165 GBP
SGD 300 SGD
B+
Retailer 2
-
£205 GBP
$275 USD
View
Most Expensive
B
77 Diamonds
MQCPQWM2V6BR · Nov 2
£242 GBP
View
2 more retailers have this diamond
Prices start from £165 GBPSave up to £77 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
£165 GBP