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Marquise|Natural|GIA

0.78ct F SI2 Marquise Natural Diamond

F/SI2 • GIA 1242089375

Certificate GIA 1242089375

Diamond specifications and retailer prices

From £678 GBP
$910 USD
As of November 1, 2026
Save £804 GBP (54%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £1,482 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 0.78ct natural marquise diamond

This 0.78ct natural marquise sits in the just-under-one-carat band, graded F colour (colourless) and SI2 clarity (slightly-included) and certified by GIA 1242089375. Listed at 9 retailers as of October 29, 2026, with prices from £678 to £1,482, a £804 spread on the same certified stone. MOH London lists it at £1,482. 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

0.78
Carat
F
Colour
SI2
Clarity
-
Cut

Specifications

Cut
PolishVery Good
SymmetryGood
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1242089375
Dimensions8.61 × 5.02 × 3.24 mm
L/W Ratio1.72
Girdle conditionFaceted
Culet sizeNone
Top View
8.61 mm5.02 mm0.78 ctF / SI2
OriginNatural
PolishVery Good
SymmetryGood
FluorescenceFaint
CertificateGIA 1242089375
Side View
Table 57.0%CrownGirdle: MED-THKPavilionCulet: 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 1
Current: £1,482 GBP|Low: £678 GBP|High: £1,492 GBP|Avg: £921 GBP|-0.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 3, 2026
Retailer 6£678 GBP
Retailer 9£729 GBP
Retailer 10£736 GBP
Retailer 7£833 GBP
Retailer 4£894 GBP
Retailer 8£894 GBP
Retailer 2£918 GBP
Retailer 5£924 GBP
Retailer 3£1,128 GBP
MOH London£1,482 GBP

28 data points across 10 retailers

9 retailers£678 GBP to £1,482 GBP

A
Cheapest Retailer
-
£678 GBP
$910 USD
B+
Retailer 2
-
£736 GBP
$988 USD
View
B+
Retailer 3
-
£833 GBP
$1,118 USD
View
B+
Retailer 4
-
£894 GBP
$1,200 USD
View
B+
Retailer 5
-
£894 GBP
$1,200 USD
View
B+
Retailer 6
-
£918 GBP
View
B+
Retailer 7
-
£924 GBP
$1,240 USD
View
B+
Retailer 8
-
£1,128 GBP
€1,442 EUR
View
Most Expensive
B
MOH London
560BBC953 · Oct 29
£1,482 GBP
View
8 more retailers have this diamond
Prices start from £678 GBPSave up to £804 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
0.78ct Marquise
£678 GBP