Round|Natural|GIA

1.51ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 1533904580

Certificate GIA 1533904580

Diamond specifications and retailer prices

From $6,938 CAD
HK$38,800 HKD
As of October 31, 2026
Save $6,836 CAD (50%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $15,636 CAD at NZ Jewellers · As of September 28, 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 1533904580. Listed at 21 retailers as of October 31, 2026, with a 99% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
FluorescenceFaint
Crown angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 1533904580
Dimensions7.28 × 7.24 × 4.55 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
Clouds are not shown. Pinpoints are not shown.
Key to symbols
Crystal, Feather, Needle, Indented Natural, Natural
Top View
7.28 mm7.24 mm1.51 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1533904580
Side View
Table 57.0%Crown 36°Girdle: STK-STKPavilion 40.6°Culet: NoneDepth 62.8%

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 31
Current: $10,360 CAD|Low: $6,938 CAD|High: $13,939 CAD|Avg: $10,153 CAD|-1.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 6$6,938 CAD
Retailer 9$8,138 CAD
Retailer 8$8,627 CAD
Retailer 4$8,907 CAD
Retailer 7$9,124 CAD
Retailer 3$10,169 CAD
Retailer 1$10,360 CAD
Retailer 5$11,486 CAD
Retailer 2$13,774 CAD

39 data points across 9 retailers

21 retailers$6,938 CAD to $13,774 CAD

A
Cheapest Retailer
-
$6,938 CAD
HK$38,800 HKD
Retailer 2
-
$7,916 CAD
SGD 7,658 SGD
View
Price last confirmed 18 days ago
B+
Retailer 3
-
$8,138 CAD
$5,826 USD
View
B+
Retailer 4
-
$8,152 CAD
$5,836 USD
View
Retailer 5
-
$8,477 CAD
$6,068 USD
View
Price last confirmed 104 days ago
B+
Retailer 6
-
$8,627 CAD
$6,176 USD
View
Final sale: no returns
Retailer 7
-
$8,630 CAD
$6,178 USD
View
Price last confirmed 24 days ago
B+
Retailer 8
-
$8,675 CAD
$6,210 USD
View
B+
Retailer 9
-
$8,907 CAD
£5,021 GBP
View
Retailer 10
-
$9,124 CAD
A$10,049 AUD
View
Price last confirmed 19 days ago
B+
Retailer 11
-
$9,292 CAD
$6,652 USD
View
Retailer 12
-
$9,348 CAD
$6,692 USD
View
Price last confirmed 24 days ago
Retailer 13
-
$9,492 CAD
$6,795 USD
View
Price last confirmed 32 days ago
B+
Retailer 14
-
$9,571 CAD
$6,852 USD
View
B
Retailer 15
-
$10,169 CAD
€6,933 EUR
View
B+
Retailer 16
-
$10,360 CAD
£5,840 GBP
View
Retailer 17
-
$10,787 CAD
$7,722 USD
View
Price last confirmed 55 days ago
Retailer 18
-
$10,787 CAD
$7,722 USD
View
Price last confirmed 22 days ago
B+
Retailer 19
-
$11,486 CAD
ZAR 132,836 ZAR
View
B
Retailer 20
-
$13,774 CAD
£7,764 GBP
View
Most Expensive
NZ Jewellers
2e3019be-6bad-462a-ae34-2634988fc2a2 · Sep 28
$15,636 CAD
$11,193 USD
View
Price last confirmed 34 days ago
20 more retailers have this diamond
Prices start from $6,938 CADSave up to $6,836 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 Round
$6,938 CAD