Round|Natural|GIA

1.00ct K SI2 Round Natural Diamond

EX • K/SI2 • GIA 6505210996

Certificate GIA 6505210996

Diamond specifications and retailer prices

From $1,445 USD
As of November 5, 2026
Save $3,421 USD (70%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $4,866 USD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1ct natural round diamond

This 1ct natural round sits in the classic one-carat band, graded K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6505210996. Listed at 18 retailers as of November 5, 2026, with prices from $1,445 to $4,866, a $3,421 spread on the same certified stone. NZ Jewellers lists it at $4,866. 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
K
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 6505210996
Dimensions6.42 × 6.39 × 3.99 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Top View
6.42 mm6.39 mm1.00 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6505210996
Side View
Table 58.0%Crown 35.5°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 62.3%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $1,935 USD|Low: $1,445 USD|High: $3,514 USD|Avg: $2,051 USD|-1.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 3$1,445 USD
Retailer 7$1,459 USD
Retailer 8$1,803 USD
Retailer 9$1,860 USD
Retailer 6$1,917 USD
Retailer 1$1,935 USD
Retailer 2$2,154 USD
Retailer 5$2,457 USD
Retailer 4$3,486 USD

32 data points across 9 retailers

18 retailers$1,445 USD to $4,866 USD

A
Cheapest Retailer
-
$1,445 USD
A
Retailer 2
-
$1,459 USD
View
B+
Retailer 3
-
$1,750 USD
View
B+
Retailer 4
-
$1,803 USD
View
B+
Retailer 5
-
$1,860 USD
View
B+
Retailer 6
-
$1,917 USD
View
B+
Retailer 7
-
$1,935 USD
View
Retailer 8
-
$1,995 USD
View
Price last confirmed 8 days ago
B+
Retailer 9
-
$1,995 USD
View
B+
Retailer 10
-
$2,025 USD
View
B+
Retailer 11
-
$2,087 USD
View
B+
Retailer 12
-
$2,133 USD
View
B+
Retailer 13
-
$2,154 USD
View
B
Retailer 14
-
$2,302 USD
View
B
Retailer 15
-
$2,457 USD
View
B
Retailer 16
-
$2,839 USD
View
B
Retailer 17
-
$3,486 USD
View
Most Expensive
C
NZ Jewellers
98a302cd-3331-4711-b280-640809bb727d · Nov 5
$4,866 USD
View
17 more retailers have this diamond
Prices start from $1,445 USDSave up to $3,421 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
$1,445 USD