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Radiant|Natural|GIA

1.51ct H SI2 Radiant Natural Diamond

EX • H/SI2 • GIA 1555665977

Certificate GIA 1555665977

Diamond specifications and retailer prices

From $6,486 CAD
$4,643 USD
As of October 30, 2026
Save $6,335 CAD (49%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $12,821 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 H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1555665977. Listed at 15 retailers as of October 30, 2026, with prices from $6,486 to $12,821, a $6,335 spread on the same certified stone. NZ Jewellers lists it at $12,821. 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
H
Color
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.22°
OriginNatural
Grading LabGIA
CertificateGIA 1555665977
Dimensions7.78 × 5.83 × 3.99 mm
L/W Ratio1.33
Culet sizeNone
Key to symbols
Crystal, Cloud
Top View
7.78 mm5.83 mm1.51 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1555665977
Side View
Table 68.0%Crown 43.22°Girdle: Slightly ThickPavilionCulet: NoneDepth 68.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $12,821 CAD|Low: $6,283 CAD|High: $13,652 CAD|Avg: $8,692 CAD|-6.1%
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
October 31, 2026
Retailer 4$6,486 CAD
Retailer 14$6,686 CAD
Retailer 3$7,075 CAD
Retailer 2$7,417 CAD
Retailer 8$7,449 CAD
Retailer 5$7,665 CAD
Retailer 6$7,665 CAD
Retailer 12$7,665 CAD
Retailer 13$7,880 CAD
Retailer 10$8,020 CAD
Retailer 7$8,674 CAD
Retailer 9$8,845 CAD
Retailer 11$12,225 CAD
NZ Jewellers$12,821 CAD

28 data points across 14 retailers

15 retailers$6,486 CAD to $12,821 CAD

A
Cheapest Retailer
-
$6,486 CAD
$4,643 USD
A
Retailer 2
-
$6,686 CAD
$4,786 USD
View
A
Retailer 3
-
$7,075 CAD
$5,065 USD
View
Final sale: no returns
A
Retailer 4
-
$7,417 CAD
£4,181 GBP
View
A
Retailer 5
-
$7,449 CAD
£4,199 GBP
View
A
Retailer 6
-
$7,665 CAD
$5,487 USD
View
A
Retailer 7
-
$7,665 CAD
$5,487 USD
View
A
Retailer 8
-
$7,665 CAD
$5,487 USD
View
A
Retailer 9
-
$7,880 CAD
$5,641 USD
View
B+
Retailer 10
-
$8,020 CAD
$5,741 USD
View
B+
Retailer 11
-
$8,674 CAD
€5,914 EUR
View
B+
Retailer 12
-
$8,845 CAD
$6,332 USD
View
Retailer 13
-
$8,940 CAD
$6,400 USD
View
Price last confirmed 11 days ago
B
Retailer 14
-
$12,225 CAD
£6,891 GBP
View
Most Expensive
B
NZ Jewellers
4550dc16-0292-4ea4-b8e9-ba98c68b4e06 · Oct 30
$12,821 CAD
$9,178 USD
View
14 more retailers have this diamond
Prices start from $6,486 CADSave up to $6,335 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
$6,486 CAD