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Round|Natural|GIA

1.00ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 7566140739

Certificate GIA 7566140739

Diamond specifications and retailer prices

From $1,222 USD
As of November 5, 2026
Save $843 USD (41%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $3,683 USD at NZ Jewellers · As of October 9, 2026
View at NZ Jewellers

About this 1ct natural round diamond

This 1ct natural round sits in the classic one-carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 7566140739. Listed at 6 retailers as of November 5, 2026, with a 69% 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
H
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 7566140739
Dimensions6.38 × 6.41 × 3.99 mm
L/W Ratio1.00
Star length45%
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Cavity, Needle, Etch Channel, Natural
Top View
6.38 mm6.41 mm1.00 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7566140739
Side View
Table 57.0%Crown 35°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 62.4%

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 5
Current: $2,065 USD|Low: $1,222 USD|High: $2,828 USD|Avg: $1,803 USD|-0.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 5, 2026
Retailer 2$1,222 USD
Retailer 7$1,399 USD
Retailer 4$1,430 USD
Retailer 9$1,624 USD
Retailer 3$1,640 USD
Retailer 8$1,645 USD
Retailer 5$1,690 USD
Retailer 1$2,065 USD
Retailer 6$2,677 USD

21 data points across 9 retailers

6 retailers$1,222 USD to $2,065 USD

A
Cheapest Retailer
-
$1,222 USD
A
Retailer 2
-
$1,418 USD
View
Retailer 3
-
$1,510 USD
View
Price last confirmed 28 days ago
Retailer 4
-
$1,742 USD
View
Price last confirmed 28 days ago
A
Retailer 5
-
$2,065 USD
View
Most Expensive
NZ Jewellers
ff73ea65-2b86-43ac-8432-cccaf066eab6 · Oct 9
$3,683 USD
View
Price last confirmed 28 days ago
5 more retailers have this diamond
Prices start from $1,222 USDSave up to $843 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
$1,222 USD