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6.55ct G SI2 Round Natural Diamond

EX • G/SI2 • IGI 468180579

Shape and cutting style on the report: Round brilliant

Certificate IGI 468180579

Diamond specifications and retailer prices

From £65,988 GBP
$88,417 USD
As of October 30, 2026
Save £37,038 GBP (36%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £103,026 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 6.55ct natural round diamond

This 6.55ct natural round sits in the over five carat band, graded G colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI 468180579. Listed at 13 retailers as of October 30, 2026, with prices from £65,988 to £103,026, a £37,038 spread on the same certified stone. MOH London lists it at £103,026. 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

6.55
Carat
G
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.3°
Pavilion angle40.9°
OriginNatural
Grading LabIGI
CertificateIGI 468180579
Dimensions12.12 × 12.06 × 7.28 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
12.12 mm12.06 mm6.55 ctG / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 468180579
Side View
Table 59.5%Crown 33.3°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 60.2%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £103,026 GBP|Low: £62,853 GBP|High: £104,268 GBP|Avg: £75,652 GBP|+4.8%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 1, 2026
Retailer 11£65,988 GBP
Retailer 3£66,747 GBP
Retailer 6£68,717 GBP
Retailer 2£71,715 GBP
Retailer 9£72,816 GBP
Retailer 4£73,770 GBP
Retailer 10£75,850 GBP
Retailer 5£77,726 GBP
Retailer 8£78,884 GBP
Retailer 12£81,152 GBP
Retailer 7£81,918 GBP
MOH London£103,026 GBP

43 data points across 12 retailers

13 retailers£65,988 GBP to £103,026 GBP

A
Cheapest Retailer
-
£65,988 GBP
$88,417 USD
A
Retailer 2
-
£66,747 GBP
$89,434 USD
View
Final sale: no returns
A
Retailer 3
-
£68,717 GBP
$92,073 USD
View
Retailer 4
-
£68,717 GBP
$92,073 USD
View
Price last confirmed 11 days ago
A
Retailer 5
-
£71,715 GBP
View
A
Retailer 6
-
£72,816 GBP
$97,566 USD
View
A
Retailer 7
-
£75,850 GBP
$101,631 USD
View
A
Retailer 8
-
£77,726 GBP
€99,185 EUR
View
A
Retailer 9
-
£78,884 GBP
$105,696 USD
View
A
Retailer 10
-
£81,152 GBP
$108,735 USD
View
A
Retailer 11
-
£81,918 GBP
$109,761 USD
View
Retailer 12
-
£81,918 GBP
$109,761 USD
View
Price last confirmed 9 days ago
Most Expensive
B+
MOH London
19068FAD5 · Nov 1
£103,026 GBP
View
12 more retailers have this diamond
Prices start from £65,988 GBPSave up to £37,038 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
6.55ct Round
£65,988 GBP