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Marquise|Natural|GIA

0.78ct E SI1 Marquise Natural Diamond

GD • E/SI1 • GIA 5151705403

Certificate GIA 5151705403

Diamond specifications and retailer prices

From £1,528 GBP
$2,047 USD
As of October 30, 2026
Save £1,186 GBP (44%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £3,322 GBP at MOH London · As of October 19, 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 E colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 5151705403. Listed at 5 retailers as of October 27, 2026, with a 78% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
E
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishGood
SymmetryGood
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 5151705403
Dimensions8.89 × 5.20 × 2.82 mm
L/W Ratio1.71
Top View
8.89 mm5.20 mm0.78 ctE / SI1
OriginNatural
CutGood
PolishGood
SymmetryGood
FluorescenceMedium
CertificateGIA 5151705403
Side View
Table 61.0%CrownGirdle: THN-VTKPavilionCulet: SmallDepth 54.2%

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: Oct 30
Current: £3,322 GBP|Low: £1,389 GBP|High: £6,954 GBP|Avg: £3,113 GBP|-0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 31, 2026
Retailer 5£1,528 GBP
Retailer 2£2,016 GBP
Retailer 4£2,113 GBP
Retailer 3£2,338 GBP
Retailer 6£2,714 GBP
MOH London£3,322 GBP
Retailer 7£6,954 GBP

38 data points across 7 retailers

5 retailers£1,528 GBP to £2,714 GBP

B+
Cheapest Retailer
-
£1,528 GBP
$2,047 USD
Final sale: no returns
C
Retailer 2
-
£2,016 GBP
View
Retailer 3
-
£2,113 GBP
A$4,356 AUD
View
Price last confirmed 23 days ago
C
Retailer 4
-
£2,714 GBP
$3,637 USD
View
Most Expensive
MOH London
9CE974553 · Oct 19
£3,322 GBP
View
Price last confirmed 12 days ago
4 more retailers have this diamond
Prices start from £1,528 GBPSave up to £1,186 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+
0.78ct Marquise
£1,528 GBP