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Marquise|Natural|GIA

0.30ct J SI2 Marquise Natural Diamond

GD • J/SI2 • GIA 6565347740

Certificate GIA 6565347740

Diamond specifications and retailer prices

From £139 GBP
SGD 252 SGD
As of November 1, 2026
Save £66 GBP (32%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £205 GBP at Rare Carat · As of November 1, 2026
View at Rare Carat

About this 0.3ct natural marquise diamond

This 0.3ct natural marquise sits in the sub-half-carat band, graded J 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 6565347740. Listed at 3 retailers as of November 1, 2026, with prices from £139 to £205, a £66 spread on the same certified stone. Rare Carat lists it at £205. 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
J
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryGood
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6565347740
Dimensions6.42 × 3.46 × 2.26 mm
L/W Ratio1.86
Culet sizeNone
Key to symbols
Crystal
Top View
6.42 mm3.46 mm0.30 ctJ / SI2
OriginNatural
CutGood
PolishVery Good
SymmetryGood
FluorescenceMedium
CertificateGIA 6565347740
Side View
Table 61.0%CrownGirdle: STK-ETKPavilionCulet: NoneDepth 65.3%

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 1
Current: £205 GBP|Low: £139 GBP|High: £209 GBP|Avg: £193 GBP|-1.8%
Rare Carat
Retailer 2
Retailer 3
November 2, 2026
Retailer 3£139 GBP
Retailer 2£202 GBP
Rare Carat£205 GBP

32 data points across 3 retailers

3 retailers£139 GBP to £205 GBP

B+
Cheapest Retailer
-
£139 GBP
SGD 252 SGD
B
Retailer 2
-
£202 GBP
View
Most Expensive
B
Rare Carat
6565347740 · Nov 1
£205 GBP
$275 USD
View
2 more retailers have this diamond
Prices start from £139 GBPSave up to £66 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
£139 GBP