Radiant|Natural|GIA

1.21ct D SI1 Radiant Natural Diamond

EX • D/SI1 • GIA 1443103827

Certificate GIA 1443103827

Diamond specifications and retailer prices

From $4,152 USD
As of November 6, 2026
Save $5,041 USD (55%) vs most expensive(unlock to see where)
29 retailers carry this diamond
Most expensive: $9,193 USD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.21ct natural radiant diamond

This 1.21ct 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 1443103827. Listed at 29 retailers as of November 5, 2026, with prices from $4,152 to $9,193, a $5,041 spread on the same certified stone. NZ Jewellers lists it at $9,193. 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

1.21
Carat
D
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1443103827
Dimensions6.70 × 5.35 × 3.73 mm
L/W Ratio1.25
Culet sizeNone
Top View
6.70 mm5.35 mm1.21 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1443103827
Side View
Table 66.0%CrownGirdle: ThickPavilionCulet: NoneDepth 69.6%

Caratlytics Score

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

Price History

Last verified: Nov 6
Current: $5,310 USD|Low: $4,378 USD|High: $8,859 USD|Avg: $5,822 USD|-1.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 7, 2026
Retailer 8$4,378 USD
Retailer 6$4,635 USD
Retailer 1$5,310 USD
Retailer 2$5,332 USD
Retailer 7$5,541 USD
Retailer 3$6,184 USD
Retailer 4$6,706 USD
Retailer 5$8,731 USD

37 data points across 8 retailers

29 retailers$4,152 USD to $9,193 USD

B+
Cheapest Retailer
-
$4,152 USD
B+
Retailer 2
-
$4,294 USD
View
B+
Retailer 3
-
$4,342 USD
View
B+
Retailer 4
-
$4,378 USD
View
Final sale: no returns
B+
Retailer 5
-
$4,395 USD
View
B+
Retailer 6
-
$4,533 USD
View
B+
Retailer 7
-
$4,635 USD
View
B+
Retailer 8
-
$4,668 USD
View
B+
Retailer 9
-
$4,685 USD
View
B
Retailer 10
-
$4,934 USD
View
Retailer 11
-
$4,980 USD
View
Price last confirmed 9 days ago
B
Retailer 12
-
$4,980 USD
View
B
Retailer 13
-
$4,980 USD
View
B
Retailer 14
-
$5,065 USD
View
B
Retailer 15
-
$5,310 USD
View
B
Retailer 16
-
$5,332 USD
View
B
Retailer 17
-
$5,427 USD
View
Retailer 18
-
$5,541 USD
View
Price last confirmed 29 days ago
B
Retailer 19
-
$5,580 USD
View
B
Retailer 20
-
$5,580 USD
View
B
Retailer 21
-
$5,746 USD
View
B
Retailer 22
-
$5,770 USD
View
Retailer 23
-
$6,065 USD
View
Price last confirmed 15 days ago
B
Retailer 24
-
$6,184 USD
View
B
Retailer 25
-
$6,331 USD
View
B
Retailer 26
-
$6,706 USD
View
B
Retailer 27
-
$7,959 USD
View
B
Retailer 28
-
$8,731 USD
View
Most Expensive
B
NZ Jewellers
9a27df5b-79d0-4380-aa40-91ee1a47bf2e · Nov 5
$9,193 USD
View
28 more retailers have this diamond
Prices start from $4,152 USDSave up to $5,041 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+
1.21ct Radiant
$4,152 USD