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Marquise|Natural|GIA

0.30ct J SI1 Marquise Natural Diamond

GD • J/SI1 • GIA 6555044178

Certificate GIA 6555044178

Diamond specifications and retailer prices

From £133 GBP
SGD 241 SGD
As of November 2, 2026
Save £57 GBP (30%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £190 GBP at 77 Diamonds · As of November 3, 2026
View at 77 Diamonds

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 SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6555044178. Listed at 3 retailers as of November 2, 2026, with prices from £133 to £190, a £57 spread on the same certified stone. 77 Diamonds lists it at £190. 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
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryGood
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6555044178
Dimensions6.39 × 3.45 × 2.30 mm
L/W Ratio1.85
Top View
6.39 mm3.45 mm0.30 ctJ / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryGood
FluorescenceFaint
CertificateGIA 6555044178
Side View
Table 60.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 66.7%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: £190 GBP|Low: £133 GBP|High: £195 GBP|Avg: £158 GBP|-0.6%
77 Diamonds
Retailer 2
Retailer 3
November 3, 2026
Retailer 3£133 GBP
Retailer 2£136 GBP
77 Diamonds£190 GBP

39 data points across 3 retailers

3 retailers£133 GBP to £190 GBP

B+
Cheapest Retailer
-
£133 GBP
SGD 241 SGD
B+
Retailer 2
-
£136 GBP
$182 USD
View
Final sale: no returns
Most Expensive
B+
77 Diamonds
MQCPNFTUJMWG · Nov 3
£190 GBP
View
2 more retailers have this diamond
Prices start from £133 GBPSave up to £57 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
£133 GBP