Round|Natural|GIA

1.00ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 2564476979

Certificate GIA 2564476979

Diamond specifications and retailer prices

From $1,740 USD
As of November 6, 2026
Save $2,302 USD (57%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $4,042 USD at MOH London · As of November 4, 2026
View at MOH London

About this 1ct natural round diamond

This 1ct natural round sits in the classic one-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2564476979. Listed at 14 retailers as of November 4, 2026, with prices from $1,740 to $4,042, a $2,302 spread on the same certified stone. MOH London lists it at $4,042. 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

1.00
Carat
I
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.5°
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 2564476979
Dimensions6.41 × 6.36 × 3.96 mm
L/W Ratio1.01
Top View
6.41 mm6.36 mm1.00 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2564476979
Side View
Table 60.0%Crown 32.5°Girdle: MED-STKPavilion 41.8°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 6
Current: $4,042 USD|Low: $1,740 USD|High: $4,359 USD|Avg: $2,570 USD|-7.3%
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
November 6, 2026
Retailer 3$1,740 USD
Retailer 2$1,749 USD
Retailer 12$2,090 USD
Retailer 7$2,212 USD
Retailer 10$2,313 USD
Retailer 11$2,315 USD
Retailer 4$2,452 USD
Retailer 5$2,452 USD
Retailer 6$2,499 USD
Retailer 9$2,722 USD
Retailer 8$2,823 USD
Retailer 13$3,375 USD
MOH London$4,042 USD

22 data points across 13 retailers

14 retailers$1,740 USD to $4,042 USD

A
Cheapest Retailer
-
$1,740 USD
A
Retailer 2
-
$1,749 USD
View
A
Retailer 3
-
$2,090 USD
View
A
Retailer 4
-
$2,212 USD
View
A
Retailer 5
-
$2,313 USD
View
B+
Retailer 6
-
$2,315 USD
View
Retailer 7
-
$2,452 USD
View
Price last confirmed 11 days ago
B+
Retailer 8
-
$2,452 USD
View
B+
Retailer 9
-
$2,499 USD
View
B+
Retailer 10
-
$2,722 USD
View
Retailer 11
-
$2,809 USD
View
Price last confirmed 33 days ago
B+
Retailer 12
-
$2,823 USD
View
B+
Retailer 13
-
$3,375 USD
View
Most Expensive
B
MOH London
50E22FE5A · Nov 4
$4,042 USD
£3,183 GBP
View
13 more retailers have this diamond
Prices start from $1,740 USDSave up to $2,302 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
$1,740 USD