Round|Natural|GIA

8.46ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 5211422577

Certificate GIA 5211422577

Diamond specifications and retailer prices

From $137,241 USD
As of November 6, 2026
Save $66,064 USD (32%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $257,061 USD at MOH London · As of October 21, 2026
View at MOH London

About this 8.46ct natural round diamond

This 8.46ct natural round sits in the over five carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 5211422577. Listed at 16 retailers as of November 5, 2026, with a 48% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

8.46
Carat
K
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 5211422577
Dimensions13.20 × 13.27 × 7.97 mm
L/W Ratio1.01
Girdle conditionFaceted
Key to symbols
Cloud, Needle, Feather
Top View
13.20 mm13.27 mm8.46 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5211422577
Side View
Table 60.0%Crown 32°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 60.2%

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 6
Current: $257,061 USD|Low: $145,660 USD|High: $258,773 USD|Avg: $179,313 USD|-0.7%
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
Retailer 15
Retailer 16
November 6, 2026
Retailer 2$145,660 USD
Retailer 7$155,188 USD
Retailer 10$157,078 USD
Retailer 9$157,635 USD
Retailer 13$157,665 USD
Retailer 8$160,238 USD
Retailer 16$164,596 USD
Retailer 12$170,541 USD
Retailer 4$174,365 USD
Retailer 5$180,716 USD
Retailer 15$188,245 USD
Retailer 3$192,302 USD
Retailer 14$195,307 USD
Retailer 6$195,775 USD
Retailer 11$203,305 USD
MOH London$257,061 USD

40 data points across 16 retailers

16 retailers$137,241 USD to $203,305 USD

B+
Cheapest Retailer
-
$137,241 USD
B+
Retailer 2
-
$145,660 USD
View
Retailer 3
-
$155,188 USD
View
Price last confirmed 27 days ago
B
Retailer 4
-
$157,078 USD
View
B
Retailer 5
-
$157,635 USD
View
Retailer 6
-
$157,665 USD
View
Price last confirmed 16 days ago
Retailer 7
-
$164,596 USD
View
Price last confirmed 17 days ago
B
Retailer 8
-
$167,215 USD
View
B
Retailer 9
-
$170,541 USD
View
B
Retailer 10
-
$174,365 USD
View
Retailer 11
-
$180,716 USD
View
Price last confirmed 21 days ago
Retailer 12
-
$188,245 USD
View
Price last confirmed 22 days ago
Retailer 13
-
$195,307 USD
View
Price last confirmed 20 days ago
Retailer 14
-
$195,775 USD
View
Price last confirmed 17 days ago
B
Retailer 15
-
$203,305 USD
View
Most Expensive
MOH London
4873F04B0 · Oct 21
$257,061 USD
£202,410 GBP
View
Price under review
15 more retailers have this diamond
Prices start from $137,241 USDSave up to $66,064 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+
8.46ct Round
$137,241 USD