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Marquise|Natural|GIA

0.40ct J SI2 Marquise Natural Diamond

GD • J/SI2 • GIA 6561337753

Certificate GIA 6561337753

Diamond specifications and retailer prices

From £235 GBP
$315 USD
As of November 1, 2026
Save £90 GBP (28%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £325 GBP at 77 Diamonds · As of November 2, 2026
View at 77 Diamonds

About this 0.4ct natural marquise diamond

This 0.4ct 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 6561337753. Listed at 3 retailers as of November 1, 2026, with prices from £235 to £325, a £90 spread on the same certified stone. 77 Diamonds lists it at £325. 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

0.40
Carat
J
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishGood
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6561337753
Dimensions7.03 × 3.78 × 2.55 mm
L/W Ratio1.86
Culet sizeNone
Key to symbols
Feather
Top View
7.03 mm3.78 mm0.40 ctJ / SI2
OriginNatural
CutGood
PolishGood
SymmetryGood
FluorescenceNone
CertificateGIA 6561337753
Side View
Table 56.0%CrownGirdle: STK-ETKPavilionCulet: NoneDepth 67.5%

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 1
Current: £325 GBP|Low: £235 GBP|High: £325 GBP|Avg: £272 GBP|+7.5%
77 Diamonds
Retailer 2
Retailer 3
November 2, 2026
Retailer 3£235 GBP
Retailer 2£253 GBP
77 Diamonds£325 GBP

33 data points across 3 retailers

3 retailers£235 GBP to £325 GBP

B+
Cheapest Retailer
-
£235 GBP
$315 USD
B+
Retailer 2
-
£253 GBP
SGD 459 SGD
View
Most Expensive
B
77 Diamonds
MQCPBFTT55X6 · Nov 2
£325 GBP
View
2 more retailers have this diamond
Prices start from £235 GBPSave up to £90 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+
0.40ct Marquise
£235 GBP