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Round|Natural|GIA

1.00ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 6552531225

Certificate GIA 6552531225

Diamond specifications and retailer prices

From $1,715 USD
As of November 6, 2026
Save $2,291 USD (57%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $4,848 USD at NZ Jewellers · As of October 20, 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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6552531225. Listed at 19 retailers as of November 4, 2026, with a 134% 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
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle34.5°
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 6552531225
Dimensions6.32 × 6.37 × 4.01 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Top View
6.32 mm6.37 mm1.00 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6552531225
Side View
Table 58.0%Crown 34.5°Girdle: MED-STKPavilion 41.8°Culet: NoneDepth 63.2%

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: $4,848 USD|Low: $1,715 USD|High: $4,848 USD|Avg: $2,587 USD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
November 6, 2026
Retailer 4$1,715 USD
Retailer 2$1,725 USD
Retailer 7$1,909 USD
Retailer 15$1,966 USD
Retailer 16$2,091 USD
Retailer 14$2,104 USD
Retailer 6$2,117 USD
Retailer 5$2,264 USD
Retailer 9$2,319 USD
Retailer 10$2,393 USD
Retailer 11$2,502 USD
Retailer 13$2,635 USD
Retailer 8$2,676 USD
Retailer 12$2,697 USD
Retailer 3$3,328 USD
Retailer 17$4,006 USD
NZ Jewellers$4,848 USD

23 data points across 17 retailers

19 retailers$1,715 USD to $4,006 USD

A
Cheapest Retailer
-
$1,715 USD
A
Retailer 2
-
$1,725 USD
View
Retailer 3
-
$1,909 USD
View
Price last confirmed 11 days ago
A
Retailer 4
-
$1,966 USD
View
A
Retailer 5
-
$2,091 USD
View
A
Retailer 6
-
$2,104 USD
View
A
Retailer 7
-
$2,117 USD
View
Final sale: no returns
A
Retailer 8
-
$2,264 USD
View
Retailer 9
-
$2,319 USD
View
Price last confirmed 17 days ago
B+
Retailer 10
-
$2,358 USD
View
B+
Retailer 11
-
$2,393 USD
View
Retailer 12
-
$2,453 USD
View
Price last confirmed 22 days ago
B+
Retailer 13
-
$2,502 USD
View
B+
Retailer 14
-
$2,635 USD
View
Retailer 15
-
$2,676 USD
View
Price last confirmed 16 days ago
B+
Retailer 16
-
$2,697 USD
View
B+
Retailer 17
-
$3,328 USD
View
B
Retailer 18
-
$4,006 USD
View
Most Expensive
NZ Jewellers
64dd4573-0d9b-4409-8f8a-84c3ac87e9dd · Oct 20
$4,848 USD
View
Price last confirmed 17 days ago
18 more retailers have this diamond
Prices start from $1,715 USDSave up to $2,291 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
$1,715 USD