Radiant|Natural|GIA

1.51ct I SI1 Radiant Natural Diamond

EX • I/SI1 • GIA 1528795927

Certificate GIA 1528795927

Diamond specifications and retailer prices

From $5,364 CAD
£3,024 GBP
As of October 30, 2026
Save $4,455 CAD (45%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $9,819 CAD at NZ Jewellers · As of October 30, 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1528795927. Listed at 8 retailers as of October 30, 2026, with prices from $5,364 to $9,819, a $4,455 spread on the same certified stone. NZ Jewellers lists it at $9,819. 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
I
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle48.67°
Pavilion angle31.5°
OriginNatural
Grading LabGIA
CertificateGIA 1528795927
Dimensions7.05 × 5.64 × 3.99 mm
L/W Ratio1.25
Top View
7.05 mm5.64 mm1.51 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1528795927
Side View
Table 65.0%Crown 48.67°Girdle: STK-THKPavilion 31.5°Culet: NoneDepth 70.6%

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 30
Current: $9,819 CAD|Low: $5,122 CAD|High: $9,822 CAD|Avg: $6,512 CAD|-0.0%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 30, 2026
Retailer 10$5,122 CAD
Retailer 2$5,364 CAD
Retailer 8$5,371 CAD
Retailer 5$5,636 CAD
Retailer 7$5,636 CAD
Retailer 6$5,836 CAD
Retailer 9$6,045 CAD
Retailer 3$6,081 CAD
Retailer 11$6,100 CAD
Retailer 4$9,477 CAD
NZ Jewellers$9,819 CAD

33 data points across 11 retailers

8 retailers$5,364 CAD to $9,819 CAD

A
Cheapest Retailer
-
$5,364 CAD
£3,024 GBP
A
Retailer 2
-
$5,371 CAD
$3,845 USD
View
A
Retailer 3
-
$5,636 CAD
$4,035 USD
View
A
Retailer 4
-
$5,636 CAD
$4,035 USD
View
A
Retailer 5
-
$5,836 CAD
$4,178 USD
View
Retailer 6
-
$6,045 CAD
A$6,658 AUD
View
Price last confirmed 28 days ago
B+
Retailer 7
-
$9,477 CAD
£5,342 GBP
View
Most Expensive
B
NZ Jewellers
4b7c664d-ceb4-4377-accf-6acf1e770705 · Oct 30
$9,819 CAD
$7,029 USD
View
7 more retailers have this diamond
Prices start from $5,364 CADSave up to $4,455 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.

A
1.51ct Radiant
$5,364 CAD