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Marquise|Natural|GIA

0.30ct G SI1 Marquise Natural Diamond

EX • G/SI1 • GIA 2566688552

Certificate GIA 2566688552

Diamond specifications and retailer prices

From £238 GBP
$320 USD
As of November 2, 2026
Save £212 GBP (47%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £451 GBP at Yorxs · As of November 2, 2026
View at Yorxs

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 2566688552. Listed at 11 retailers as of November 2, 2026, with prices from £238 to £451, a £212 spread on the same certified stone. Yorxs lists it at £451. 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
FluorescenceNone
Crown angle40.11°
Pavilion angle40.41°
OriginNatural
Grading LabGIA
CertificateGIA 2566688552
Dimensions7.05 × 3.37 × 2.17 mm
L/W Ratio2.09
Culet sizeNone
Top View
7.05 mm3.37 mm0.30 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2566688552
Side View
Table 58.0%Crown 40.11°Girdle: MED-VTKPavilion 40.41°Culet: NoneDepth 64.6%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: £340 GBP|Low: £238 GBP|High: £451 GBP|Avg: £325 GBP|+6.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Yorxs
November 2, 2026
Retailer 8£238 GBP
Retailer 9£254 GBP
Retailer 2£265 GBP
Retailer 5£297 GBP
Retailer 3£327 GBP
Retailer 6£331 GBP
Retailer 1£340 GBP
Retailer 4£356 GBP
Retailer 7£378 GBP
Yorxs£451 GBP

11 data points across 10 retailers

11 retailers£238 GBP to £451 GBP

A
Cheapest Retailer
-
£238 GBP
$320 USD
B+
Retailer 2
-
£254 GBP
SGD 461 SGD
View
B+
Retailer 3
-
£265 GBP
$355 USD
View
B+
Retailer 4
-
£288 GBP
SGD 522 SGD
View
B+
Retailer 5
-
£297 GBP
$399 USD
View
B
Retailer 6
-
£327 GBP
View
B
Retailer 7
-
£331 GBP
$444 USD
View
B
Retailer 8
-
£340 GBP
View
B
Retailer 9
-
£356 GBP
$478 USD
View
B
Retailer 10
-
£378 GBP
$507 USD
View
Most Expensive
B
Yorxs
622050056 · Nov 2
£451 GBP
€576 EUR
View
10 more retailers have this diamond
Prices start from £238 GBPSave up to £212 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.

A
0.30ct Marquise
£238 GBP