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Round|Natural|GIA

1.51ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 6555735876

Certificate GIA 6555735876

Diamond specifications and retailer prices

From $8,583 CAD
HK$48,000 HKD
As of October 31, 2026
Save $10,922 CAD (56%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $19,505 CAD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.51ct natural round diamond

This 1.51ct natural round sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6555735876. Listed at 20 retailers as of October 30, 2026, with prices from $8,583 to $19,505, a $10,922 spread on the same certified stone. NZ Jewellers lists it at $19,505. 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
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6555735876
Dimensions7.25 × 7.29 × 4.55 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Crystal, Cloud, Feather, Needle
Top View
7.25 mm7.29 mm1.51 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6555735876
Side View
Table 58.0%Crown 36°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.6%

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 31
Current: $19,505 CAD|Low: $8,511 CAD|High: $19,505 CAD|Avg: $12,069 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
November 1, 2026
Retailer 15$8,583 CAD
Retailer 7$9,214 CAD
Retailer 9$9,750 CAD
Retailer 5$9,753 CAD
Retailer 18$9,757 CAD
Retailer 3$10,565 CAD
Retailer 8$10,728 CAD
Retailer 13$10,933 CAD
Retailer 17$11,184 CAD
Retailer 4$11,650 CAD
Retailer 10$11,650 CAD
Retailer 16$11,659 CAD
Retailer 19$12,041 CAD
Retailer 6$12,191 CAD
Retailer 11$12,846 CAD
Retailer 2$12,924 CAD
Retailer 14$14,327 CAD
Retailer 12$16,252 CAD
NZ Jewellers$19,505 CAD

35 data points across 19 retailers

20 retailers$8,583 CAD to $19,505 CAD

B+
Cheapest Retailer
-
$8,583 CAD
HK$48,000 HKD
B+
Retailer 2
-
$8,762 CAD
A$9,650 AUD
View
B+
Retailer 3
-
$9,214 CAD
$6,596 USD
View
B+
Retailer 4
-
$9,750 CAD
$6,980 USD
View
Final sale: no returns
B+
Retailer 5
-
$9,753 CAD
$6,982 USD
View
B+
Retailer 6
-
$9,757 CAD
$6,985 USD
View
B
Retailer 7
-
$10,565 CAD
$7,563 USD
View
B+
Retailer 8
-
$10,728 CAD
$7,680 USD
View
B+
Retailer 9
-
$10,933 CAD
£6,163 GBP
View
Retailer 10
-
$11,184 CAD
A$12,317 AUD
View
Price last confirmed 10 days ago
B
Retailer 11
-
$11,650 CAD
$8,340 USD
View
B
Retailer 12
-
$11,650 CAD
$8,340 USD
View
B+
Retailer 13
-
$11,659 CAD
€7,949 EUR
View
B
Retailer 14
-
$12,041 CAD
$8,620 USD
View
B
Retailer 15
-
$12,191 CAD
$8,727 USD
View
Retailer 16
-
$12,846 CAD
$9,196 USD
View
Price last confirmed 9 days ago
B
Retailer 17
-
$12,924 CAD
£7,285 GBP
View
B
Retailer 18
-
$14,327 CAD
ZAR 165,691 ZAR
View
B
Retailer 19
-
$16,252 CAD
£9,161 GBP
View
Most Expensive
B
NZ Jewellers
709b4404-daec-4c0b-b654-fb474c7a1d60 · Oct 30
$19,505 CAD
$13,963 USD
View
19 more retailers have this diamond
Prices start from $8,583 CADSave up to $10,922 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 Round
$8,583 CAD