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Marquise|Natural|GIA

0.30ct G SI1 Marquise Natural Diamond

EX • G/SI1 • GIA 6552330160

Certificate GIA 6552330160

Diamond specifications and retailer prices

From £322 GBP
$432 USD
As of October 29, 2026
Save £254 GBP (44%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £658 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6552330160. Listed at 11 retailers as of October 29, 2026, with a 79% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

0.30
Carat
G
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6552330160
Dimensions6.65 × 3.50 × 2.18 mm
L/W Ratio1.90
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Knot
Top View
6.65 mm3.50 mm0.30 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6552330160
Side View
Table 59.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 62.1%

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: Oct 29
Current: £658 GBP|Low: £313 GBP|High: £1,117 GBP|Avg: £496 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 10£322 GBP
Retailer 5£336 GBP
Retailer 4£380 GBP
Retailer 3£399 GBP
Retailer 6£403 GBP
Retailer 9£448 GBP
Retailer 7£530 GBP
Retailer 2£576 GBP
MOH London£658 GBP
Retailer 8£1,117 GBP

27 data points across 10 retailers

11 retailers£322 GBP to £576 GBP

B+
Cheapest Retailer
-
£322 GBP
$432 USD
B+
Retailer 2
-
£336 GBP
$450 USD
View
B
Retailer 3
-
£380 GBP
View
B
Retailer 4
-
£399 GBP
View
B
Retailer 5
-
£403 GBP
$541 USD
View
B
Retailer 6
-
£448 GBP
ZAR 9,702 ZAR
View
Retailer 7
-
£459 GBP
A$947 AUD
View
Price last confirmed 29 days ago
B
Retailer 8
-
£530 GBP
€676 EUR
View
B
Retailer 9
-
£576 GBP
View
Most Expensive
MOH London
13E960722 · Nov 1
£658 GBP
View
Price under review
9 more retailers have this diamond
Prices start from £322 GBPSave up to £254 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
£322 GBP