Round|Natural|GIA

1.01ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 2566100127

Certificate GIA 2566100127

Diamond specifications and retailer prices

From $1,868 USD
As of November 6, 2026
Save $3,374 USD (64%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $5,488 USD at NZ Jewellers · As of September 28, 2026
View at NZ Jewellers

About this 1.01ct natural round diamond

This 1.01ct 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 2566100127. Listed at 21 retailers as of November 5, 2026, with a 181% 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

1.01
Carat
H
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle35°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 2566100127
Dimensions6.35 × 6.40 × 4.00 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Cloud, Feather, Needle, Natural
Top View
6.35 mm6.40 mm1.01 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2566100127
Side View
Table 59.0%Crown 35°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 62.8%

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: $5,242 USD|Low: $1,868 USD|High: $5,377 USD|Avg: $2,952 USD|-2.5%
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
November 6, 2026
Retailer 2$1,868 USD
Retailer 6$1,984 USD
Retailer 14$2,214 USD
Retailer 4$2,276 USD
Retailer 8$2,485 USD
Retailer 3$2,507 USD
Retailer 9$2,637 USD
Retailer 7$2,647 USD
Retailer 12$2,670 USD
Retailer 11$2,893 USD
Retailer 10$2,921 USD
Retailer 13$3,060 USD
Retailer 5$4,403 USD
NZ Jewellers$5,242 USD

23 data points across 14 retailers

21 retailers$1,868 USD to $5,242 USD

A
Cheapest Retailer
-
$1,868 USD
A
Retailer 2
-
$1,984 USD
View
Final sale: no returns
A
Retailer 3
-
$2,214 USD
View
A
Retailer 4
-
$2,276 USD
View
A
Retailer 5
-
$2,485 USD
View
A
Retailer 6
-
$2,507 USD
View
Retailer 7
-
$2,625 USD
View
Price last confirmed 50 days ago
Retailer 8
-
$2,625 USD
View
Price last confirmed 39 days ago
B+
Retailer 9
-
$2,637 USD
View
B+
Retailer 10
-
$2,647 USD
View
B+
Retailer 11
-
$2,670 USD
View
B+
Retailer 12
-
$2,893 USD
View
B+
Retailer 13
-
$2,921 USD
View
Retailer 14
-
$2,941 USD
View
Price last confirmed 30 days ago
Retailer 15
-
$3,029 USD
View
Price last confirmed 38 days ago
Retailer 16
-
$3,029 USD
View
Price last confirmed 50 days ago
B+
Retailer 17
-
$3,060 USD
View
B
Retailer 18
-
$4,403 USD
View
B
Retailer 19
-
$5,242 USD
View
Retailer 20
-
$5,488 USD
View
Price last confirmed 49 days ago
Most Expensive
NZ Jewellers
431de488-9f46-45fd-8a26-4ecad8c084cf · Sep 28
$5,488 USD
View
Price last confirmed 39 days ago
20 more retailers have this diamond
Prices start from $1,868 USDSave up to $3,374 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
1.01ct Round
$1,868 USD