Round|Natural|GIA

1.03ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 2556574821

Certificate GIA 2556574821

Diamond specifications and retailer prices

From $3,832 USD
As of October 30, 2026
Save $3,822 USD (50%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $8,373 USD at NZ Jewellers · As of October 30, 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2556574821. Listed at 15 retailers as of October 30, 2026, with a 100% 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

1.03
Carat
I
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 2556574821
Dimensions6.43 × 6.41 × 4.03 mm
L/W Ratio1.00
Star length50%
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Needle
Top View
6.43 mm6.41 mm1.03 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2556574821
Side View
Table 57.0%Crown 36.5°Girdle: THN-STKPavilion 41°Culet: NoneDepth 62.7%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 30
Current: $8,373 USD|Low: $1,861 USD|High: $8,373 USD|Avg: $4,486 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 1, 2026
Retailer 8$1,861 USD
Retailer 7$2,200 USD
Retailer 12$3,770 USD
Retailer 3$3,832 USD
Retailer 4$3,947 USD
Retailer 15$4,130 USD
Retailer 5$4,354 USD
Retailer 13$4,354 USD
Retailer 14$4,354 USD
Retailer 9$4,749 USD
Retailer 6$5,024 USD
Retailer 11$5,148 USD
Retailer 16$5,307 USD
Retailer 10$5,908 USD
Retailer 2$7,654 USD
NZ Jewellers$8,373 USD

21 data points across 16 retailers

15 retailers$3,832 USD to $7,654 USD

Retailer 1
-
$2,200 USD
Price last confirmed 27 days ago
Retailer 2
-
$3,770 USD
View
Price last confirmed 14 days ago
B
Retailer 3
-
$3,832 USD
View
B
Retailer 4
-
$3,947 USD
View
B
Retailer 5
-
$4,130 USD
View
B
Retailer 6
-
$4,354 USD
View
B
Retailer 7
-
$4,354 USD
View
B
Retailer 8
-
$4,354 USD
View
B
Retailer 9
-
$4,749 USD
£3,739 GBP
View
B
Retailer 10
-
$4,776 USD
View
B
Retailer 11
-
$5,024 USD
View
B
Retailer 12
-
$5,148 USD
€4,903 EUR
View
B
Retailer 13
-
$5,908 USD
ZAR 95,440 ZAR
View
B
Retailer 14
-
$7,654 USD
£6,027 GBP
View
Most Expensive
NZ Jewellers
2941b8e2-fb7e-40b5-9a24-504f2ce5863b · Oct 30
$8,373 USD
View
Price under review
14 more retailers have this diamond
Prices start from $3,832 USDSave up to $3,822 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
1.03ct Round
$3,832 USD