Round|Natural|GIA

1.03ct K SI1 Round Natural Diamond

GD • K/SI1 • GIA 2566303416

Certificate GIA 2566303416

Diamond specifications and retailer prices

From $1,228 USD
As of November 4, 2026
Save $2,757 USD (69%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $3,985 USD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.03ct natural round diamond

This 1.03ct natural round sits in the classic one-carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a standard cut grade and certified by GIA 2566303416. Listed at 19 retailers as of November 4, 2026, with prices from $1,228 to $3,985, a $2,757 spread on the same certified stone. NZ Jewellers lists it at $3,985. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.03
Carat
K
Color
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryGood
FluorescenceNone
Crown angle40°
Pavilion angle39.8°
OriginNatural
Grading LabGIA
CertificateGIA 2566303416
Dimensions6.07 × 6.19 × 4.10 mm
L/W Ratio1.02
Top View
6.07 mm6.19 mm1.03 ctK / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryGood
FluorescenceNone
CertificateGIA 2566303416
Side View
Table 57.0%Crown 40°Girdle: THK-VTKPavilion 39.8°Culet: NoneDepth 66.9%

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 4
Current: $3,985 USD|Low: $1,216 USD|High: $3,985 USD|Avg: $1,888 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
Retailer 17
Retailer 18
Retailer 19
November 6, 2026
Retailer 17$1,228 USD
Retailer 13$1,239 USD
Retailer 18$1,460 USD
Retailer 5$1,514 USD
Retailer 12$1,562 USD
Retailer 3$1,634 USD
Retailer 6$1,634 USD
Retailer 7$1,666 USD
Retailer 11$1,709 USD
Retailer 10$1,710 USD
Retailer 19$1,710 USD
Retailer 4$1,770 USD
Retailer 2$1,791 USD
Retailer 9$1,885 USD
Retailer 15$1,994 USD
Retailer 14$2,091 USD
Retailer 8$2,371 USD
Retailer 16$2,854 USD
NZ Jewellers$3,985 USD

23 data points across 19 retailers

19 retailers$1,228 USD to $3,985 USD

B+
Cheapest Retailer
-
$1,228 USD
A
Retailer 2
-
$1,239 USD
View
B+
Retailer 3
-
$1,460 USD
View
B+
Retailer 4
-
$1,514 USD
View
B+
Retailer 5
-
$1,562 USD
View
B+
Retailer 6
-
$1,634 USD
View
Retailer 7
-
$1,634 USD
View
Price last confirmed 8 days ago
B+
Retailer 8
-
$1,666 USD
View
B+
Retailer 9
-
$1,709 USD
View
B+
Retailer 10
-
$1,710 USD
View
Retailer 11
-
$1,710 USD
View
Price last confirmed 10 days ago
B+
Retailer 12
-
$1,770 USD
View
B+
Retailer 13
-
$1,791 USD
View
B+
Retailer 14
-
$1,885 USD
View
B+
Retailer 15
-
$1,994 USD
View
B+
Retailer 16
-
$2,091 USD
View
B
Retailer 17
-
$2,371 USD
View
B
Retailer 18
-
$2,854 USD
View
Most Expensive
C
NZ Jewellers
0a0e3b24-45db-46df-9aeb-255499903e82 · Nov 5
$3,985 USD
View
18 more retailers have this diamond
Prices start from $1,228 USDSave up to $2,757 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
1.03ct Round
$1,228 USD