Radiant|Natural|GIA

1.01ct D SI1 Radiant Natural Diamond

ID • D/SI1 • GIA 2557812240

Certificate GIA 2557812240

Diamond specifications and retailer prices

From $2,378 USD
As of October 31, 2026
Save $2,442 USD (51%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $5,721 USD at NZ Jewellers · As of September 30, 2026
View at NZ Jewellers

About this 1.01ct natural radiant diamond

This 1.01ct natural radiant sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2557812240. Listed at 16 retailers as of October 29, 2026, with a 103% 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

1.01
Carat
D
Color
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Crown angle52.31°
Pavilion angle30.09°
OriginNatural
Grading LabGIA
CertificateGIA 2557812240
Dimensions4.69 × 7.12 × 3.22 mm
L/W Ratio1.52
Culet sizeNone
Key to symbols
Crystal, Cloud, Knot, Feather, Needle
Top View
4.69 mm7.12 mm1.01 ctD / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 2557812240
Side View
Table 67.0%Crown 52.31°Girdle: STK-THKPavilion 30.09°Culet: NoneDepth 68.7%

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: Oct 31
Current: $2,796 USD|Low: $1,972 USD|High: $4,853 USD|Avg: $2,893 USD
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 5$2,378 USD
Retailer 6$2,450 USD
Retailer 3$2,455 USD
Retailer 8$2,511 USD
Retailer 2$2,651 USD
Retailer 10$2,736 USD
Retailer 1$2,796 USD
Retailer 4$2,838 USD
Retailer 9$3,066 USD
Retailer 7$4,820 USD

44 data points across 10 retailers

16 retailers$2,378 USD to $4,820 USD

A
Cheapest Retailer
-
$2,378 USD
A
Retailer 2
-
$2,450 USD
View
Final sale: no returns
A
Retailer 3
-
$2,455 USD
View
A
Retailer 4
-
$2,511 USD
View
A
Retailer 5
-
$2,651 USD
A$4,078 AUD
View
Retailer 6
-
$2,736 USD
View
Price last confirmed 31 days ago
Retailer 7
-
$2,736 USD
View
Price last confirmed 16 days ago
B+
Retailer 8
-
$2,796 USD
View
A
Retailer 9
-
$2,838 USD
£2,235 GBP
View
Retailer 10
-
$2,842 USD
View
Price last confirmed 31 days ago
Retailer 11
-
$3,066 USD
A$4,717 AUD
View
Price last confirmed 24 days ago
Retailer 12
-
$3,157 USD
View
Price last confirmed 55 days ago
Retailer 13
-
$3,157 USD
View
Price last confirmed 33 days ago
Retailer 14
-
$3,157 USD
View
Price last confirmed 47 days ago
B
Retailer 15
-
$4,820 USD
£3,795 GBP
View
Most Expensive
NZ Jewellers
8745b152-c77d-4b17-94a5-a33cef344093 · Sep 30
$5,721 USD
View
Price last confirmed 32 days ago
15 more retailers have this diamond
Prices start from $2,378 USDSave up to $2,442 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
1.01ct Radiant
$2,378 USD