Round|Natural|GIA

1.00ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 5553042899

Certificate GIA 5553042899

Diamond specifications and retailer prices

From $1,661 USD
As of November 5, 2026
Save $2,282 USD (58%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $4,838 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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 5553042899. Listed at 19 retailers as of November 2, 2026, with a 137% 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 angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 5553042899
Dimensions6.33 × 6.36 × 4.00 mm
L/W Ratio1.00
Top View
6.33 mm6.36 mm1.00 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5553042899
Side View
Table 59.0%Crown 35°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 63.0%

Caratlytics Score

How it works →
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: Nov 5
Current: $4,838 USD|Low: $1,661 USD|High: $4,838 USD|Avg: $2,475 USD|+0.8%
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
Retailer 18
November 6, 2026
Retailer 15$1,661 USD
Retailer 17$1,715 USD
Retailer 5$1,842 USD
Retailer 3$1,882 USD
Retailer 18$1,908 USD
Retailer 14$2,090 USD
Retailer 2$2,094 USD
Retailer 10$2,096 USD
Retailer 8$2,193 USD
Retailer 4$2,370 USD
Retailer 6$2,370 USD
Retailer 9$2,419 USD
Retailer 11$2,431 USD
Retailer 7$2,450 USD
Retailer 16$2,747 USD
Retailer 12$2,865 USD
Retailer 13$3,943 USD
NZ Jewellers$4,838 USD

26 data points across 18 retailers

19 retailers$1,661 USD to $3,943 USD

A
Cheapest Retailer
-
$1,661 USD
A
Retailer 2
-
$1,715 USD
View
A
Retailer 3
-
$1,842 USD
View
A
Retailer 4
-
$1,882 USD
View
Final sale: no returns
A
Retailer 5
-
$1,908 USD
View
Retailer 6
-
$2,080 USD
View
Price last confirmed 21 days ago
A
Retailer 7
-
$2,090 USD
View
A
Retailer 8
-
$2,094 USD
View
Retailer 9
-
$2,096 USD
View
Price last confirmed 15 days ago
Retailer 10
-
$2,193 USD
View
Price last confirmed 15 days ago
A
Retailer 11
-
$2,370 USD
View
A
Retailer 12
-
$2,370 USD
View
Retailer 13
-
$2,419 USD
View
Price last confirmed 16 days ago
B+
Retailer 14
-
$2,431 USD
View
B+
Retailer 15
-
$2,450 USD
View
B+
Retailer 16
-
$2,747 USD
View
B+
Retailer 17
-
$2,865 USD
View
B
Retailer 18
-
$3,943 USD
View
Most Expensive
NZ Jewellers
83c0332c-7649-483a-b899-540f4f630fff · Oct 20
$4,838 USD
View
Price last confirmed 16 days ago
18 more retailers have this diamond
Prices start from $1,661 USDSave up to $2,282 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
$1,661 USD