Radiant|Natural|GIA

1.21ct E SI1 Radiant Natural Diamond

EX • E/SI1 • GIA 5231852725

Certificate GIA 5231852725

Diamond specifications and retailer prices

From $3,655 USD
Save $4,789 USD (57%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $8,444 USD at NZ Jewellers
View at NZ Jewellers

About this 1.21ct natural radiant diamond

This 1.21ct natural radiant sits in the classic one-carat band, graded E 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 5231852725. Listed at 20 retailers, with prices from $3,655 to $8,444 at NZ Jewellers, a $4,789 spread on the same certified stone. 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
E
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle55.91°
OriginNatural
Grading LabGIA
CertificateGIA 5231852725
Dimensions7.16 × 5.34 × 3.65 mm
L/W Ratio1.34
Top View
7.16 mm5.34 mm1.21 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5231852725
Side View
Table 67.0%CrownGirdle: ThickPavilion 55.91°Culet: NoneDepth 68.4%

Caratlytics Score

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

Price History

Last verified: Oct 1
Current: $8,444 USD|Low: $3,543 USD|High: $8,444 USD|Avg: $4,766 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
Retailer 20
October 1, 2026
Retailer 16$3,655 USD
Retailer 19$3,739 USD
Retailer 11$3,987 USD
Retailer 12$3,989 USD
Retailer 8$4,036 USD
Retailer 10$4,257 USD
Retailer 20$4,325 USD
Retailer 3$4,574 USD
Retailer 4$4,574 USD
Retailer 14$4,574 USD
Retailer 7$4,651 USD
Retailer 17$5,012 USD
Retailer 13$5,095 USD
Retailer 6$5,205 USD
Retailer 5$5,278 USD
Retailer 9$5,574 USD
Retailer 2$5,607 USD
Retailer 15$6,088 USD
Retailer 18$8,138 USD
NZ Jewellers$8,444 USD

37 data points across 20 retailers

20 retailers$3,655 USD to $8,444 USD

B+
Cheapest Retailer
-
$3,655 USD
B+
Retailer 2
-
$3,739 USD
View
B+
Retailer 3
-
$3,987 USD
View
B+
Retailer 4
-
$3,989 USD
View
B+
Retailer 5
-
$4,036 USD
View
B+
Retailer 6
-
$4,257 USD
View
B+
Retailer 7
-
$4,325 USD
View
B+
Retailer 8
-
$4,574 USD
View
B+
Retailer 9
-
$4,574 USD
View
B+
Retailer 10
-
$4,574 USD
View
B+
Retailer 11
-
$4,651 USD
View
Price last confirmed 15 days ago
B
Retailer 12
-
$5,023 USD
£3,955 GBP
View
B
Retailer 13
-
$5,095 USD
A$7,838 AUD
View
B
Retailer 14
-
$5,205 USD
View
B
Retailer 15
-
$5,278 USD
View
B
Retailer 16
-
$5,574 USD
View
B
Retailer 17
-
$5,607 USD
€5,340 EUR
View
B
Retailer 18
-
$6,088 USD
ZAR 98,348 ZAR
View
B
Retailer 19
-
$8,138 USD
£6,408 GBP
View
Most Expensive
B
NZ Jewellers
f047aa84-0dda-4a57-a635-696066fbfe5f · Sep 30
$8,444 USD
View
19 more retailers have this diamond
Prices start from $3,655 USDSave up to $4,789 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.

B+
1.21ct Radiant
$3,655 USD