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Marquise|Natural|GIA

0.78ct K SI1 Marquise Natural Diamond

VG • K/SI1 • GIA 5

Certificate GIA 5

Diamond specifications and retailer prices

From £956 GBP
As of November 4, 2026
Save £1,799 GBP (65%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £2,755 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 0.78ct natural marquise diamond

This 0.78ct natural marquise sits in the just-under-one-carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA. Listed at 8 retailers as of November 4, 2026, with prices from £956 to £2,755, a £1,799 spread on the same certified stone. NZ Jewellers lists it at £2,755. 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
K
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryGood
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 5
Dimensions9.67 × 4.66 × 2.94 mm
L/W Ratio2.08
Top View
9.67 mm4.66 mm0.78 ctK / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryGood
FluorescenceFaint
CertificateGIA 5
Side View
Table 53.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 63.1%

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 4
Current: £2,755 GBP|Low: £956 GBP|High: £2,755 GBP|Avg: £1,289 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 1, 2026
Retailer 8£956 GBP
Retailer 4£968 GBP
Retailer 5£1,023 GBP
Retailer 7£1,023 GBP
Retailer 2£1,071 GBP
Retailer 3£1,143 GBP
Retailer 6£1,181 GBP
NZ Jewellers£2,755 GBP

3 data points across 8 retailers

8 retailers£956 GBP to £2,755 GBP

B+
Cheapest Retailer
-
£956 GBP
B+
Retailer 2
-
£968 GBP
View
Retailer 3
-
£1,023 GBP
View
Price last confirmed 8 days ago
B
Retailer 4
-
£1,023 GBP
View
B
Retailer 5
-
£1,071 GBP
View
B
Retailer 6
-
£1,143 GBP
View
B
Retailer 7
-
£1,181 GBP
View
Most Expensive
C
NZ Jewellers
6a2b832b-697b-4db0-b184-df7430c21bca · Nov 5
£2,755 GBP
$3,708 USD
View
7 more retailers have this diamond
Prices start from £956 GBPSave up to £1,799 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
£956 GBP