Round|Natural|GIA

1.00ct E SI2 Round Natural Diamond

EX • E/SI2 • GIA 1236581481

Certificate GIA 1236581481

Diamond specifications and retailer prices

From $2,412 USD
As of October 30, 2026
Save $1,296 USD (35%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $5,690 USD at NZ Jewellers · As of September 27, 2026
View at NZ Jewellers

About this 1ct natural round diamond

This 1ct natural round sits in the classic one-carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1236581481. Listed at 18 retailers as of October 30, 2026, with a 54% 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

1.00
Carat
E
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle35°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1236581481
Dimensions6.45 × 6.37 × 3.91 mm
L/W Ratio1.01
Star length55%
Lower girdle85%
Top View
6.45 mm6.37 mm1.00 ctE / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 1236581481
Side View
Table 58.0%Crown 35°Girdle: Sli. ThickPavilion 40.8°Culet: NoneDepth 61.4%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $3,708 USD|Low: $2,282 USD|High: $5,528 USD|Avg: $3,148 USD|+15.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 30, 2026
Retailer 3$2,412 USD
Retailer 5$2,427 USD
Retailer 9$2,503 USD
Retailer 2$2,650 USD
Retailer 8$2,808 USD
Retailer 11$2,986 USD
Retailer 6$3,009 USD
Retailer 4$3,493 USD
Retailer 1$3,708 USD
Retailer 10$3,789 USD
Retailer 7$5,513 USD

38 data points across 11 retailers

18 retailers$2,412 USD to $3,708 USD

A
Cheapest Retailer
-
$2,412 USD
A
Retailer 2
-
$2,427 USD
View
A
Retailer 3
-
$2,568 USD
A$3,951 AUD
View
Retailer 4
-
$2,650 USD
View
Price last confirmed 23 days ago
A
Retailer 5
-
$2,808 USD
View
A
Retailer 6
-
$2,830 USD
CA$3,931 CAD
View
Retailer 7
-
$2,959 USD
View
Price last confirmed 22 days ago
Retailer 8
-
$2,959 USD
View
Price last confirmed 22 days ago
Retailer 9
-
$2,986 USD
View
Price last confirmed 23 days ago
B+
Retailer 10
-
$3,009 USD
View
Retailer 11
-
$3,073 USD
View
Price last confirmed 31 days ago
Retailer 12
-
$3,102 USD
View
Price last confirmed 88 days ago
Retailer 13
-
$3,414 USD
View
Price last confirmed 31 days ago
B+
Retailer 14
-
$3,493 USD
€3,327 EUR
View
B
Retailer 15
-
$3,708 USD
£2,920 GBP
View
Retailer 16
-
$3,789 USD
View
Price last confirmed 22 days ago
Retailer 17
-
$5,513 USD
£4,341 GBP
View
Price last confirmed 22 days ago
Most Expensive
NZ Jewellers
ccaa283b-e8da-4ed6-a203-eb9afb6e9e14 · Sep 27
$5,690 USD
View
Price last confirmed 33 days ago
17 more retailers have this diamond
Prices start from $2,412 USDSave up to $1,296 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
$2,412 USD