Marquise|Natural|GIA

0.40ct H SI1 Marquise Natural Diamond

EX • H/SI1 • GIA 7563049406

Certificate GIA 7563049406

Diamond specifications and retailer prices

From £440 GBP
$590 USD
As of November 2, 2026
Save £342 GBP (44%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £782 GBP at Moon Ocean · As of October 30, 2026
View at Moon Ocean

About this 0.4ct natural marquise diamond

This 0.4ct natural marquise sits in the sub-half-carat band, graded H 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 7563049406. Listed at 8 retailers as of October 30, 2026, with prices from £440 to £782, a £342 spread on the same certified stone. Moon Ocean lists it at £782. 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

0.40
Carat
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7563049406
Dimensions7.94 × 3.78 × 2.45 mm
L/W Ratio2.10
Top View
7.94 mm3.78 mm0.40 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 7563049406
Side View
Table 61.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 64.8%

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 2
Current: £782 GBP|Low: £207 GBP|High: £817 GBP|Avg: £479 GBP|+0.2%
Moon Ocean
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 9£207 GBP
Retailer 10£307 GBP
Retailer 4£440 GBP
Retailer 5£445 GBP
Retailer 2£447 GBP
Retailer 11£458 GBP
Retailer 8£483 GBP
Retailer 7£515 GBP
Retailer 6£528 GBP
Moon Ocean£782 GBP
Retailer 3£817 GBP

27 data points across 11 retailers

8 retailers£440 GBP to £782 GBP

B+
Cheapest Retailer
-
£440 GBP
$590 USD
B+
Retailer 2
-
£445 GBP
$596 USD
View
B
Retailer 3
-
£447 GBP
View
Retailer 4
-
£458 GBP
A$943 AUD
View
Price last confirmed 29 days ago
B
Retailer 5
-
£483 GBP
$648 USD
View
B
Retailer 6
-
£515 GBP
$690 USD
View
B
Retailer 7
-
£528 GBP
View
Most Expensive
B
Moon Ocean
NVN-7E8D4742F-406 · Oct 30
£782 GBP
View
7 more retailers have this diamond
Prices start from £440 GBPSave up to £342 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
£440 GBP