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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 $88,417 USD
As of November 1, 2026
Save $49,627 USD (36%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $138,044 USD at MOH London · As of November 2, 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 November 1, 2026, with prices from $88,417 to $138,044, a $49,627 spread on the same certified stone. MOH London lists it at $138,044. 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
Color
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

How it works →
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: Nov 1
Current: $138,044 USD|Low: $84,216 USD|High: $139,708 USD|Avg: $101,368 USD|+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 2, 2026
Retailer 11$88,417 USD
Retailer 3$89,434 USD
Retailer 6$92,073 USD
Retailer 2$96,083 USD
Retailer 9$97,566 USD
Retailer 4$98,844 USD
Retailer 10$101,631 USD
Retailer 5$103,682 USD
Retailer 8$105,696 USD
Retailer 12$108,735 USD
Retailer 7$109,761 USD
MOH London$138,044 USD

43 data points across 12 retailers

13 retailers$88,417 USD to $138,044 USD

A
Cheapest Retailer
-
$88,417 USD
A
Retailer 2
-
$89,434 USD
View
Final sale: no returns
A
Retailer 3
-
$92,073 USD
View
Retailer 4
-
$92,073 USD
View
Price last confirmed 13 days ago
A
Retailer 5
-
$96,083 USD
£75,656 GBP
View
Retailer 6
-
$97,566 USD
View
Price last confirmed 8 days ago
A
Retailer 7
-
$101,631 USD
View
A
Retailer 8
-
$103,682 USD
€98,745 EUR
View
A
Retailer 9
-
$105,696 USD
View
A
Retailer 10
-
$108,735 USD
View
A
Retailer 11
-
$109,761 USD
View
Retailer 12
-
$109,761 USD
View
Price last confirmed 11 days ago
Most Expensive
B+
MOH London
19068FAD5 · Nov 2
$138,044 USD
£108,696 GBP
View
12 more retailers have this diamond
Prices start from $88,417 USDSave up to $49,627 USD

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
$88,417 USD