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Marquise|Natural|GIA

0.30ct H SI2 Marquise Natural Diamond

GD • H/SI2 • GIA 5234370400

Certificate GIA 5234370400

Diamond specifications and retailer prices

From £190 GBP
$255 USD
As of November 1, 2026
Save £217 GBP (53%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £408 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 0.3ct natural marquise diamond

This 0.3ct natural marquise sits in the sub-half-carat band, graded H 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 5234370400. Listed at 7 retailers as of November 1, 2026, with prices from £190 to £408, a £217 spread on the same certified stone. MOH London lists it at £408. 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

0.30
Carat
H
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishGood
SymmetryGood
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 5234370400
Dimensions6.94 × 3.48 × 2.06 mm
L/W Ratio1.99
Top View
6.94 mm3.48 mm0.30 ctH / SI2
OriginNatural
CutGood
PolishGood
SymmetryGood
FluorescenceFaint
CertificateGIA 5234370400
Side View
Table 59.0%CrownGirdle: THK-ETKPavilionCulet: NoneDepth 59.2%

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 1
Current: £408 GBP|Low: £190 GBP|High: £412 GBP|Avg: £304 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 2, 2026
Retailer 6£190 GBP
Retailer 4£247 GBP
Retailer 2£268 GBP
Retailer 5£332 GBP
Retailer 3£357 GBP
MOH London£408 GBP

39 data points across 6 retailers

7 retailers£190 GBP to £408 GBP

B+
Cheapest Retailer
-
£190 GBP
$255 USD
B
Retailer 2
-
£247 GBP
View
B
Retailer 3
-
£268 GBP
View
B
Retailer 4
-
£332 GBP
$445 USD
View
C
Retailer 5
-
£349 GBP
View
C
Retailer 6
-
£357 GBP
€455 EUR
View
Most Expensive
C
MOH London
1B6464635 · Nov 1
£408 GBP
View
6 more retailers have this diamond
Prices start from £190 GBPSave up to £217 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+
0.30ct Marquise
£190 GBP