Radiant|Natural|GIA

1.51ct E SI1 Radiant Natural Diamond

EX • E/SI1 • GIA 6243006312

Certificate GIA 6243006312

Diamond specifications and retailer prices

From $11,125 CAD
$7,949 USD
As of October 26, 2026
Save $8,911 CAD (44%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $20,037 CAD at NZ Jewellers · As of October 27, 2026
View at NZ Jewellers

About this 1.51ct natural radiant diamond

This 1.51ct natural radiant sits in the one-and-a-half to two 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 6243006312. Listed at 22 retailers as of October 26, 2026, with prices from $11,125 to $20,037, a $8,911 spread on the same certified stone. NZ Jewellers lists it at $20,037. 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

1.51
Carat
E
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6243006312
Dimensions7.69 × 5.69 × 3.85 mm
L/W Ratio1.35
Culet sizeNone
Top View
7.69 mm5.69 mm1.51 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6243006312
Side View
Table 69.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 67.7%

Caratlytics Score

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

Price History

Last verified: Oct 26
Current: $20,037 CAD|Low: $11,050 CAD|High: $20,037 CAD|Avg: $14,149 CAD
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
October 28, 2026
Retailer 5$11,050 CAD
Retailer 4$11,125 CAD
Retailer 11$11,946 CAD
Retailer 15$12,023 CAD
Retailer 10$12,122 CAD
Retailer 7$12,459 CAD
Retailer 19$13,023 CAD
Retailer 12$13,062 CAD
Retailer 16$13,202 CAD
Retailer 17$13,225 CAD
Retailer 8$13,279 CAD
Retailer 2$13,525 CAD
Retailer 3$14,735 CAD
Retailer 9$14,812 CAD
Retailer 6$15,028 CAD
Retailer 13$15,065 CAD
Retailer 18$17,349 CAD
Retailer 14$18,801 CAD
NZ Jewellers$20,037 CAD

33 data points across 19 retailers

22 retailers$11,125 CAD to $20,037 CAD

B+
Retailer 1
-
$11,050 CAD
$7,895 USD
Price last confirmed 8 days ago
B+
Retailer 2
-
$11,125 CAD
$7,949 USD
View
B+
Retailer 3
-
$11,256 CAD
$8,042 USD
View
B+
Retailer 4
-
$11,946 CAD
$8,535 USD
View
B+
Retailer 5
-
$12,023 CAD
$8,590 USD
View
B+
Retailer 6
-
$12,122 CAD
$8,661 USD
View
B+
Retailer 7
-
$12,459 CAD
View
B+
Retailer 8
-
$12,815 CAD
$9,157 USD
View
B+
Retailer 9
-
$13,023 CAD
$9,305 USD
View
B+
Retailer 10
-
$13,062 CAD
£7,348 GBP
View
B+
Retailer 11
-
$13,202 CAD
A$14,512 AUD
View
B+
Retailer 12
-
$13,225 CAD
$9,449 USD
View
B
Retailer 13
-
$13,279 CAD
$9,488 USD
View
B+
Retailer 14
-
$13,525 CAD
£7,609 GBP
View
B
Retailer 15
-
$14,735 CAD
$10,528 USD
View
B
Retailer 16
-
$14,812 CAD
$10,583 USD
View
B
Retailer 17
-
$15,028 CAD
$10,737 USD
View
B+
Retailer 18
-
$15,065 CAD
€10,251 EUR
View
B
Retailer 19
-
$15,824 CAD
$11,306 USD
View
B
Retailer 20
-
$17,349 CAD
ZAR 200,255 ZAR
View
B
Retailer 21
-
$18,801 CAD
£10,577 GBP
View
Most Expensive
B
NZ Jewellers
021ade1d-30d8-47bd-ad0e-6c1fc438c237 · Oct 27
$20,037 CAD
$14,316 USD
View
21 more retailers have this diamond
Prices start from $11,125 CADSave up to $8,911 CAD

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+
1.51ct Radiant
$11,125 CAD