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Round|Natural|GIA

1.05ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 1555614721

Certificate GIA 1555614721

Diamond specifications and retailer prices

From $2,268 USD
As of November 6, 2026
Save $3,525 USD (61%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $5,793 USD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.05ct natural round diamond

This 1.05ct 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 1555614721. Listed at 21 retailers as of November 5, 2026, with prices from $2,268 to $5,793, a $3,525 spread on the same certified stone. NZ Jewellers lists it at $5,793. 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

1.05
Carat
I
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1555614721
Dimensions6.51 × 6.53 × 4.04 mm
L/W Ratio1.00
Girdle conditionSlightly Thick
Culet sizeNone
Key to symbols
Feather, Crystal, Needle, Cloud
Top View
6.51 mm6.53 mm1.05 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1555614721
Side View
Table 56.0%Crown 35°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 61.9%

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: $5,793 USD|Low: $2,124 USD|High: $5,793 USD|Avg: $3,090 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
November 6, 2026
Retailer 7$2,268 USD
Retailer 5$2,270 USD
Retailer 6$2,317 USD
Retailer 14$2,510 USD
Retailer 16$2,510 USD
Retailer 15$2,626 USD
Retailer 9$2,649 USD
Retailer 4$2,847 USD
Retailer 3$2,897 USD
Retailer 2$2,898 USD
Retailer 8$3,104 USD
Retailer 13$3,234 USD
Retailer 10$3,263 USD
Retailer 11$3,382 USD
Retailer 12$4,842 USD
NZ Jewellers$5,793 USD

31 data points across 16 retailers

21 retailers$2,268 USD to $5,793 USD

A
Cheapest Retailer
-
$2,268 USD
A
Retailer 2
-
$2,270 USD
View
A
Retailer 3
-
$2,317 USD
View
Final sale: no returns
A
Retailer 4
-
$2,417 USD
View
A
Retailer 5
-
$2,510 USD
View
Retailer 6
-
$2,510 USD
View
Price last confirmed 8 days ago
B+
Retailer 7
-
$2,553 USD
View
B+
Retailer 8
-
$2,626 USD
View
B+
Retailer 9
-
$2,627 USD
View
B+
Retailer 10
-
$2,649 USD
View
B+
Retailer 11
-
$2,847 USD
View
B+
Retailer 12
-
$2,897 USD
View
B+
Retailer 13
-
$2,898 USD
View
B+
Retailer 14
-
$3,100 USD
View
Retailer 15
-
$3,104 USD
View
Price last confirmed 30 days ago
B+
Retailer 16
-
$3,163 USD
View
B+
Retailer 17
-
$3,234 USD
View
B+
Retailer 18
-
$3,263 USD
View
B
Retailer 19
-
$3,382 USD
View
B
Retailer 20
-
$4,842 USD
View
Most Expensive
B
NZ Jewellers
e8e9a1de-dcce-42c5-84ec-6cec898aa17c · Nov 5
$5,793 USD
View
20 more retailers have this diamond
Prices start from $2,268 USDSave up to $3,525 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
1.05ct Round
$2,268 USD