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Round|Natural|GIA

1.51ct I SI1 Round Natural Diamond

GD • I/SI1 • GIA 1377240735

Certificate GIA 1377240735

Diamond specifications and retailer prices

From $5,257 CAD
HK$29,400 HKD
As of October 31, 2026
Save $6,594 CAD (56%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $11,851 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade and certified by GIA 1377240735. Listed at 18 retailers as of October 30, 2026, with prices from $5,257 to $11,851, a $6,594 spread on the same certified stone. NZ Jewellers lists it at $11,851. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.51
Carat
I
Color
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1377240735
Dimensions7.04 × 6.95 × 4.65 mm
L/W Ratio1.01
Key to symbols
Twinning Wisp, Feather
Top View
7.04 mm6.95 mm1.51 ctI / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1377240735
Side View
Table 57.0%CrownGirdle: ThickPavilionCulet: NoneDepth 66.5%

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: $11,851 CAD|Low: $4,631 CAD|High: $11,851 CAD|Avg: $6,811 CAD|+9.0%
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
October 31, 2026
Retailer 11$5,257 CAD
Retailer 6$6,050 CAD
Retailer 4$6,180 CAD
Retailer 17$6,275 CAD
Retailer 5$6,539 CAD
Retailer 7$6,663 CAD
Retailer 10$6,684 CAD
Retailer 12$7,001 CAD
Retailer 3$7,085 CAD
Retailer 8$7,085 CAD
Retailer 9$7,085 CAD
Retailer 18$7,298 CAD
Retailer 14$7,310 CAD
Retailer 13$8,020 CAD
Retailer 16$8,176 CAD
Retailer 2$8,710 CAD
Retailer 15$11,345 CAD
NZ Jewellers$11,851 CAD

25 data points across 18 retailers

18 retailers$5,257 CAD to $11,851 CAD

B+
Cheapest Retailer
-
$5,257 CAD
HK$29,400 HKD
B+
Retailer 2
-
$6,050 CAD
$4,331 USD
View
B+
Retailer 3
-
$6,180 CAD
$4,424 USD
View
B+
Retailer 4
-
$6,275 CAD
$4,492 USD
View
B+
Retailer 5
-
$6,539 CAD
$4,681 USD
View
Final sale: no returns
B+
Retailer 6
-
$6,663 CAD
$4,770 USD
View
B+
Retailer 7
-
$6,684 CAD
SGD 6,466 SGD
View
B+
Retailer 8
-
$7,001 CAD
£3,946 GBP
View
B+
Retailer 9
-
$7,085 CAD
$5,072 USD
View
B+
Retailer 10
-
$7,085 CAD
$5,072 USD
View
B+
Retailer 11
-
$7,085 CAD
$5,072 USD
View
B+
Retailer 12
-
$7,298 CAD
$5,224 USD
View
B+
Retailer 13
-
$7,310 CAD
£4,120 GBP
View
B+
Retailer 14
-
$8,020 CAD
€5,468 EUR
View
B
Retailer 15
-
$8,176 CAD
$5,853 USD
View
B
Retailer 16
-
$8,710 CAD
ZAR 100,727 ZAR
View
B
Retailer 17
-
$11,345 CAD
£6,395 GBP
View
Most Expensive
B
NZ Jewellers
b1e3832e-6607-4c7c-8ab6-d32f401f6ec3 · Oct 30
$11,851 CAD
$8,484 USD
View
17 more retailers have this diamond
Prices start from $5,257 CADSave up to $6,594 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
$5,257 CAD