Round|Natural|GIA

6.60ct E SI1 Round Natural Diamond

EX • E/SI1 • GIA 2223007566

Certificate GIA 2223007566

Diamond specifications and retailer prices

From $190,072 USD
As of October 29, 2026
Save $142,484 USD (43%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $332,556 USD at MOH London · As of October 29, 2026
View at MOH London

About this 6.6ct natural round diamond

This 6.6ct natural round sits in the over five carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2223007566. Listed at 17 retailers as of October 29, 2026, with prices from $190,072 to $332,556, a $142,484 spread on the same certified stone. MOH London lists it at $332,556. 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

6.60
Carat
E
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 2223007566
Dimensions11.89 × 11.95 × 7.46 mm
L/W Ratio1.01
Star length55%
Lower girdle80%
Top View
11.89 mm11.95 mm6.60 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2223007566
Side View
Table 57.0%Crown 36°Girdle: MediumPavilion 40.6°Culet: NoneDepth 62.6%

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 29
Current: $332,556 USD|Low: $176,502 USD|High: $334,771 USD|Avg: $227,269 USD|+0.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
October 30, 2026
Retailer 5$176,502 USD
Retailer 6$190,072 USD
Retailer 4$194,963 USD
Retailer 3$202,955 USD
Retailer 7$205,862 USD
Retailer 14$211,802 USD
Retailer 8$220,627 USD
Retailer 12$220,627 USD
Retailer 2$227,571 USD
Retailer 9$229,452 USD
Retailer 13$238,277 USD
Retailer 11$254,910 USD
Retailer 10$256,584 USD
MOH London$332,556 USD

32 data points across 14 retailers

17 retailers$190,072 USD to $332,556 USD

B+
Cheapest Retailer
-
$190,072 USD
B+
Retailer 2
-
$192,910 USD
View
Retailer 3
-
$194,963 USD
A$299,942 AUD
View
Price last confirmed 31 days ago
B+
Retailer 4
-
$202,955 USD
View
Retailer 5
-
$202,955 USD
View
Price last confirmed 16 days ago
Retailer 6
-
$202,955 USD
View
Price last confirmed 32 days ago
B+
Retailer 7
-
$205,862 USD
£162,096 GBP
View
B+
Retailer 8
-
$211,802 USD
View
B+
Retailer 9
-
$220,627 USD
View
B+
Retailer 10
-
$220,627 USD
View
B+
Retailer 11
-
$226,670 USD
View
B+
Retailer 12
-
$227,571 USD
£179,190 GBP
View
B
Retailer 13
-
$229,452 USD
View
B
Retailer 14
-
$238,277 USD
View
B
Retailer 15
-
$254,910 USD
ZAR 4,118,092 ZAR
View
B
Retailer 16
-
$256,584 USD
€244,366 EUR
View
Most Expensive
B
MOH London
BE7C8ED7F · Oct 29
$332,556 USD
£261,855 GBP
View
16 more retailers have this diamond
Prices start from $190,072 USDSave up to $142,484 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.

B+
6.60ct Round
$190,072 USD