CaratHunter
Plans
Round|Natural|GIA

1.05ct F SI1 Round Natural Diamond

EX • F/SI1 • GIA 1558729376

Certificate GIA 1558729376

Diamond specifications and retailer prices

From $3,122 USD
As of November 4, 2026
Save $3,956 USD (56%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $7,078 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 F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1558729376. Listed at 16 retailers as of November 4, 2026, with prices from $3,122 to $7,078, a $3,956 spread on the same certified stone. NZ Jewellers lists it at $7,078. 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
F
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1558729376
Dimensions6.42 × 6.46 × 4.03 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Top View
6.42 mm6.46 mm1.05 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1558729376
Side View
Table 58.0%Crown 36°Girdle: Slightly ThickPavilion 40.8°Culet: NoneDepth 62.6%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $4,089 USD|Low: $2,937 USD|High: $6,794 USD|Avg: $4,027 USD|-10.2%
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
November 6, 2026
Retailer 5$3,122 USD
Retailer 11$3,231 USD
Retailer 3$3,497 USD
Retailer 4$3,681 USD
Retailer 13$3,681 USD
Retailer 9$3,822 USD
Retailer 2$4,004 USD
Retailer 1$4,089 USD
Retailer 12$4,247 USD
Retailer 8$4,445 USD
Retailer 14$4,598 USD
Retailer 6$4,778 USD
Retailer 7$4,959 USD
Retailer 10$6,794 USD

40 data points across 14 retailers

16 retailers$3,122 USD to $7,078 USD

B+
Cheapest Retailer
-
$3,122 USD
B+
Retailer 2
-
$3,175 USD
View
B+
Retailer 3
-
$3,231 USD
View
Final sale: no returns
B+
Retailer 4
-
$3,497 USD
View
B+
Retailer 5
-
$3,681 USD
View
B+
Retailer 6
-
$3,681 USD
View
B+
Retailer 7
-
$3,822 USD
View
B+
Retailer 8
-
$4,004 USD
View
B+
Retailer 9
-
$4,004 USD
View
B+
Retailer 10
-
$4,089 USD
View
B+
Retailer 11
-
$4,247 USD
View
B+
Retailer 12
-
$4,445 USD
View
B
Retailer 13
-
$4,778 USD
View
B
Retailer 14
-
$4,959 USD
View
B
Retailer 15
-
$6,794 USD
View
Most Expensive
B
NZ Jewellers
9e420a83-dc25-4924-8280-fa19a2fa8ce1 · Nov 5
$7,078 USD
View
15 more retailers have this diamond
Prices start from $3,122 USDSave up to $3,956 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.

B+
1.05ct Round
$3,122 USD