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6.78ct H SI2 Round Natural Diamond

EX • H/SI2 • IGI 743557879

Shape and cutting style on the report: Round brilliant

Certificate IGI 743557879

Diamond specifications and retailer prices

From £48,472 GBP
₹6,185,494 INR
As of November 1, 2026
Save £39,453 GBP (45%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £87,925 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 6.78ct natural round diamond

This 6.78ct natural round sits in the over five carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI 743557879. Listed at 4 retailers as of November 1, 2026, with prices from £48,472 to £87,925, a £39,453 spread on the same certified stone. MOH London lists it at £87,925. 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

6.78
Carat
H
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.6°
Pavilion angle41.3°
OriginNatural
Grading LabIGI
CertificateIGI 743557879
Dimensions11.97 × 12.05 × 7.57 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Top View
11.97 mm12.05 mm6.78 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 743557879
Side View
Table 58.0%Crown 35.6°Girdle: MED-STKPavilion 41.3°Culet: NoneDepth 63.0%

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: £87,925 GBP|Low: £48,359 GBP|High: £88,984 GBP|Avg: £64,780 GBP|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
November 1, 2026
Retailer 3£48,472 GBP
Retailer 4£56,796 GBP
Retailer 2£66,015 GBP
MOH London£87,925 GBP

45 data points across 4 retailers

4 retailers£48,472 GBP to £87,925 GBP

A
Cheapest Retailer
-
£48,472 GBP
₹6,185,494 INR
A
Retailer 2
-
£56,796 GBP
$76,100 USD
View
A
Retailer 3
-
£66,015 GBP
€84,241 EUR
View
Most Expensive
B+
MOH London
9CF7BC0BC · Nov 1
£87,925 GBP
View
3 more retailers have this diamond
Prices start from £48,472 GBPSave up to £39,453 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
6.78ct Round
£48,472 GBP