Radiant|Natural|GIA

1.51ct F SI1 Radiant Natural Diamond

EX • F/SI1 • GIA 6545057025

Certificate GIA 6545057025

Diamond specifications and retailer prices

From $11,277 CAD
A$12,415 AUD
As of November 1, 2026
Save $8,817 CAD (44%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $20,093 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 F 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 6545057025. Listed at 20 retailers as of October 30, 2026, with prices from $11,277 to $20,093, a $8,817 spread on the same certified stone. NZ Jewellers lists it at $20,093. 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
F
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.53°
Pavilion angle29.05°
OriginNatural
Grading LabGIA
CertificateGIA 6545057025
Dimensions5.53 × 8.15 × 3.60 mm
L/W Ratio1.47
Top View
5.53 mm8.15 mm1.51 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6545057025
Side View
Table 66.0%Crown 43.53°Girdle: Very ThickPavilion 29.05°Culet: NoneDepth 65.2%

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: Nov 1
Current: $20,093 CAD|Low: $11,051 CAD|High: $20,723 CAD|Avg: $14,120 CAD|-3.0%
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
November 2, 2026
Retailer 9$11,287 CAD
Retailer 19$11,976 CAD
Retailer 5$12,055 CAD
Retailer 15$12,055 CAD
Retailer 8$12,156 CAD
Retailer 6$13,060 CAD
Retailer 2$13,179 CAD
Retailer 13$13,240 CAD
Retailer 18$13,261 CAD
Retailer 3$13,397 CAD
Retailer 4$14,240 CAD
Retailer 17$14,240 CAD
Retailer 11$14,400 CAD
Retailer 14$14,631 CAD
Retailer 16$14,715 CAD
Retailer 7$15,070 CAD
Retailer 10$15,867 CAD
Retailer 12$18,828 CAD
NZ Jewellers$20,093 CAD

42 data points across 19 retailers

20 retailers$11,277 CAD to $20,093 CAD

B+
Cheapest Retailer
-
$11,277 CAD
A$12,415 AUD
B+
Retailer 2
-
$11,287 CAD
$8,077 USD
View
B+
Retailer 3
-
$11,976 CAD
$8,570 USD
View
B+
Retailer 4
-
$12,055 CAD
$8,627 USD
View
B+
Retailer 5
-
$12,055 CAD
$8,627 USD
View
Final sale: no returns
B+
Retailer 6
-
$12,156 CAD
$8,699 USD
View
B+
Retailer 7
-
$13,060 CAD
$9,346 USD
View
B+
Retailer 8
-
$13,179 CAD
£7,426 GBP
View
Retailer 9
-
$13,240 CAD
A$14,577 AUD
View
Price last confirmed 9 days ago
B+
Retailer 10
-
$13,261 CAD
$9,490 USD
View
B+
Retailer 11
-
$13,397 CAD
$9,587 USD
View
B
Retailer 12
-
$14,240 CAD
$10,190 USD
View
B
Retailer 13
-
$14,240 CAD
$10,190 USD
View
B
Retailer 14
-
$14,400 CAD
$10,305 USD
View
B
Retailer 15
-
$14,631 CAD
$10,470 USD
View
B
Retailer 16
-
$14,715 CAD
$10,530 USD
View
B
Retailer 17
-
$15,070 CAD
$10,784 USD
View
Retailer 18
-
$15,867 CAD
$11,355 USD
View
Price last confirmed 10 days ago
B
Retailer 19
-
$18,828 CAD
£10,609 GBP
View
Most Expensive
B
NZ Jewellers
1e0b6c26-ff93-4381-948b-98c0c0e75016 · Oct 30
$20,093 CAD
$14,379 USD
View
19 more retailers have this diamond
Prices start from $11,277 CADSave up to $8,817 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
$11,277 CAD