Round|Natural|GIA

1.00ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 1555246897

Certificate GIA 1555246897

Diamond specifications and retailer prices

From $1,946 USD
HK$15,200 HKD
As of October 30, 2026
Save $2,605 USD (57%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $5,590 USD at NZ Jewellers · As of September 27, 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 1555246897. Listed at 21 retailers as of October 25, 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
I
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 1555246897
Dimensions6.30 × 6.35 × 4.01 mm
L/W Ratio1.01
Top View
6.30 mm6.35 mm1.00 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1555246897
Side View
Table 57.0%Crown 36.5°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 63.4%

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: Oct 30
Current: $2,756 USD|Low: $1,924 USD|High: $4,817 USD|Avg: $2,776 USD|-0.6%
Retailer 1
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
October 31, 2026
Retailer 17$1,946 USD
Retailer 7$2,123 USD
Retailer 11$2,123 USD
Retailer 4$2,169 USD
Retailer 5$2,171 USD
Retailer 16$2,345 USD
Retailer 3$2,380 USD
Retailer 9$2,422 USD
Retailer 6$2,700 USD
Retailer 13$2,700 USD
Retailer 1$2,756 USD
Retailer 15$2,790 USD
Retailer 8$2,996 USD
Retailer 10$3,043 USD
Retailer 14$3,159 USD
Retailer 12$3,173 USD
Retailer 2$4,550 USD

34 data points across 17 retailers

21 retailers$1,946 USD to $4,550 USD

A
Cheapest Retailer
-
$1,946 USD
HK$15,200 HKD
A
Retailer 2
-
$2,123 USD
View
A
Retailer 3
-
$2,123 USD
View
A
Retailer 4
-
$2,169 USD
View
Final sale: no returns
A
Retailer 5
-
$2,171 USD
View
A
Retailer 6
-
$2,192 USD
A$3,372 AUD
View
B+
Retailer 7
-
$2,345 USD
View
B+
Retailer 8
-
$2,380 USD
View
Retailer 9
-
$2,422 USD
View
Price last confirmed 23 days ago
Retailer 10
-
$2,534 USD
View
Price last confirmed 31 days ago
B+
Retailer 11
-
$2,700 USD
View
B+
Retailer 12
-
$2,700 USD
View
B+
Retailer 13
-
$2,756 USD
£2,170 GBP
View
B+
Retailer 14
-
$2,790 USD
View
Retailer 15
-
$2,795 USD
View
Price last confirmed 31 days ago
Retailer 16
-
$2,996 USD
A$4,609 AUD
View
Price last confirmed 23 days ago
B+
Retailer 17
-
$3,043 USD
€2,898 EUR
View
B
Retailer 18
-
$3,159 USD
ZAR 51,029 ZAR
View
B+
Retailer 19
-
$3,173 USD
View
B
Retailer 20
-
$4,550 USD
£3,583 GBP
View
Most Expensive
NZ Jewellers
593a8d85-e95d-4e46-bc6d-94eacbe213fd · Sep 27
$5,590 USD
View
Price last confirmed 34 days ago
20 more retailers have this diamond
Prices start from $1,946 USDSave up to $2,605 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
$1,946 USD