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Round|Natural|GIA

1.00ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 1423768522

Certificate GIA 1423768522

Diamond specifications and retailer prices

From $1,997 USD
HK$15,600 HKD
As of October 30, 2026
Save $3,549 USD (64%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $5,546 USD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1ct natural round diamond

This 1ct natural round sits in the classic one-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1423768522. Listed at 23 retailers as of October 30, 2026, with prices from $1,997 to $5,546, a $3,549 spread on the same certified stone. NZ Jewellers lists it at $5,546. 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
I
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 1423768522
Dimensions6.36 × 6.39 × 3.95 mm
L/W Ratio1.00
Culet sizeNone
Top View
6.36 mm6.39 mm1.00 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1423768522
Side View
Table 60.0%Crown 35.5°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 62.0%

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: Oct 30
Current: $5,546 USD|Low: $1,920 USD|High: $5,546 USD|Avg: $2,787 USD|+0.7%
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
Retailer 19
Retailer 20
Retailer 21
Retailer 22
October 30, 2026
Retailer 16$1,997 USD
Retailer 5$2,055 USD
Retailer 2$2,128 USD
Retailer 18$2,170 USD
Retailer 3$2,218 USD
Retailer 13$2,218 USD
Retailer 10$2,318 USD
Retailer 14$2,318 USD
Retailer 11$2,320 USD
Retailer 12$2,425 USD
Retailer 7$2,531 USD
Retailer 20$2,560 USD
Retailer 8$2,675 USD
Retailer 17$2,760 USD
Retailer 19$2,760 USD
Retailer 22$2,818 USD
Retailer 21$2,850 USD
Retailer 4$2,995 USD
Retailer 9$3,116 USD
Retailer 6$3,128 USD
Retailer 15$4,489 USD
NZ Jewellers$5,546 USD

19 data points across 22 retailers

23 retailers$1,997 USD to $5,546 USD

A
Cheapest Retailer
-
$1,997 USD
HK$15,600 HKD
A
Retailer 2
-
$2,055 USD
View
A
Retailer 3
-
$2,128 USD
View
A
Retailer 4
-
$2,170 USD
View
A
Retailer 5
-
$2,218 USD
View
Final sale: no returns
A
Retailer 6
-
$2,218 USD
View
A
Retailer 7
-
$2,318 USD
View
A
Retailer 8
-
$2,318 USD
View
A
Retailer 9
-
$2,320 USD
View
A
Retailer 10
-
$2,425 USD
View
B+
Retailer 11
-
$2,531 USD
View
B+
Retailer 12
-
$2,560 USD
£2,016 GBP
View
B+
Retailer 13
-
$2,675 USD
View
B+
Retailer 14
-
$2,760 USD
View
B+
Retailer 15
-
$2,760 USD
View
B+
Retailer 16
-
$2,818 USD
£2,219 GBP
View
B+
Retailer 17
-
$2,850 USD
View
B+
Retailer 18
-
$2,995 USD
€2,852 EUR
View
Retailer 19
-
$3,006 USD
A$4,625 AUD
View
Price last confirmed 22 days ago
B+
Retailer 20
-
$3,116 USD
ZAR 50,338 ZAR
View
B
Retailer 21
-
$3,128 USD
View
B
Retailer 22
-
$4,489 USD
£3,535 GBP
View
Most Expensive
B
NZ Jewellers
7330d7c4-5473-4174-83b5-06070554d291 · Oct 30
$5,546 USD
View
22 more retailers have this diamond
Prices start from $1,997 USDSave up to $3,549 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
$1,997 USD