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Round|Natural|IGI

1.00ct I IF Round Natural Diamond

EX • I/IF • IGI 654416351

Shape and cutting style on the report: Round brilliant

Certificate IGI 654416351

Diamond specifications and retailer prices

From $2,189 USD
As of November 1, 2026
Save $2,055 USD (48%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $5,217 USD at NZ Jewellers · As of October 17, 2026
View at NZ Jewellers

About this 1ct natural round diamond

This 1ct natural round sits in the classic one-carat band, graded I colour (near-colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI 654416351. Listed at 18 retailers as of November 1, 2026, with a 94% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.00
Carat
I
Color
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.9°
Pavilion angle41°
OriginNatural
Grading LabIGI
CertificateIGI 654416351
Dimensions6.35 × 6.44 × 3.97 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
6.35 mm6.44 mm1.00 ctI / IF
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 654416351
Side View
Table 56.0%Crown 33.9°Girdle: THN-STKPavilion 41°Culet: NoneDepth 62.0%

Caratlytics Score

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

Price History

Last verified: Nov 1
Current: $2,620 USD|Low: $1,864 USD|High: $4,425 USD|Avg: $2,759 USD|+3.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 8$2,189 USD
Retailer 5$2,190 USD
Retailer 6$2,229 USD
Retailer 9$2,237 USD
Retailer 1$2,620 USD
Retailer 7$2,775 USD
Retailer 4$2,978 USD
Retailer 2$3,012 USD
Retailer 3$4,244 USD

39 data points across 9 retailers

18 retailers$2,189 USD to $4,244 USD

A
Cheapest Retailer
-
$2,189 USD
A
Retailer 2
-
$2,190 USD
View
A
Retailer 3
-
$2,229 USD
View
A
Retailer 4
-
$2,237 USD
View
Final sale: no returns
Retailer 5
-
$2,423 USD
View
Price last confirmed 52 days ago
Retailer 6
-
$2,423 USD
View
Price last confirmed 40 days ago
Retailer 7
-
$2,495 USD
View
Price last confirmed 17 days ago
Retailer 8
-
$2,495 USD
View
Price last confirmed 15 days ago
A
Retailer 9
-
$2,620 USD
£2,063 GBP
View
A
Retailer 10
-
$2,775 USD
£2,185 GBP
View
Retailer 11
-
$2,796 USD
View
Price last confirmed 56 days ago
Retailer 12
-
$2,796 USD
View
Price last confirmed 41 days ago
A
Retailer 13
-
$2,978 USD
ZAR 48,112 ZAR
View
A
Retailer 14
-
$3,012 USD
€2,869 EUR
View
B+
Retailer 15
-
$4,244 USD
£3,342 GBP
View
Retailer 16
-
$5,065 USD
View
Price last confirmed 53 days ago
Retailer 17
-
$5,065 USD
View
Price last confirmed 42 days ago
Most Expensive
NZ Jewellers
bdeaa615-7175-4fb5-bd0a-485c6e2d260e · Oct 17
$5,217 USD
View
Price last confirmed 16 days ago
17 more retailers have this diamond
Prices start from $2,189 USDSave up to $2,055 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
1.00ct Round
$2,189 USD