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Round|Natural|IGI

0.81ct K SI1 Round Natural Diamond

EX • K/SI1 • IGI 648405395

Certificate IGI 648405395

Diamond specifications and retailer prices

From $415 USD
₹39,477 INR
Save $814 USD (66%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $1,228 USD at MOH London
View at MOH London

About this 0.81ct natural round diamond

This 0.81ct natural round sits in the just-under-one-carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI 648405395. Listed at 10 retailers, with prices from $415 to $1,228 at MOH London, a $814 spread on the same certified stone. 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

0.81
Carat
K
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.6°
Pavilion angle41.1°
OriginNatural
Grading LabIGI
CertificateIGI 648405395
Dimensions6.01 × 5.94 × 3.69 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
6.01 mm5.94 mm0.81 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 648405395
Side View
Table 58.0%Crown 34.6°Girdle: MED-STKPavilion 41.1°Culet: NoneDepth 61.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0-100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 1
Current: $1,228 USD|Low: $413 USD|High: $1,228 USD|Avg: $662 USD|+0.9%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 1, 2026
Retailer 2$415 USD
Retailer 8$586 USD
Retailer 7$645 USD
Retailer 9$658 USD
Retailer 3$670 USD
Retailer 10$687 USD
Retailer 4$725 USD
Retailer 6$766 USD
Retailer 5$771 USD
MOH London$1,228 USD

41 data points across 10 retailers

10 retailers$415 USD to $1,228 USD

A
Cheapest Retailer
-
$415 USD
₹39,477 INR
A
Retailer 2
-
$586 USD
€558 EUR
View
Our latest check could not confirm this price
A
Retailer 3
-
$646 USD
£509 GBP
View
A
Retailer 4
-
$658 USD
View
A
Retailer 5
-
$670 USD
£527 GBP
View
B+
Retailer 6
-
$687 USD
View
Price last confirmed 32 days ago
B+
Retailer 7
-
$725 USD
View
B+
Retailer 8
-
$766 USD
ZAR 12,367 ZAR
View
A
Retailer 9
-
$771 USD
€734 EUR
View
Most Expensive
B+
MOH London
D3DCECE14 · Sep 27
$1,228 USD
£967 GBP
View
9 more retailers have this diamond
Prices start from $415 USDSave up to $814 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.

A
0.81ct Round
$415 USD