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Round|Natural|GIA

1.51ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 2125868320

Certificate GIA 2125868320

Diamond specifications and retailer prices

From $12,146 CAD
$8,695 USD
As of October 25, 2026
Save $11,753 CAD (49%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $23,899 CAD at Diamond Quarter · As of October 29, 2026
View at Diamond Quarter

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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2125868320. Listed at 19 retailers as of October 25, 2026, with prices from $12,146 to $23,899, a $11,753 spread on the same certified stone. Diamond Quarter lists it at $23,899. 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

Specifications

CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2125868320
Dimensions7.37 × 7.35 × 4.56 mm
L/W Ratio1.00
Culet sizeNone
Top View
7.37 mm7.35 mm1.51 ctH / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 2125868320
Side View
Table 57.0%CrownGirdle: MediumPavilionCulet: NoneDepth 62.0%

Caratlytics Score

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B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 25
Current: $14,838 CAD|Low: $11,372 CAD|High: $21,571 CAD|Avg: $15,899 CAD|-0.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 30, 2026
Retailer 4$12,146 CAD
Retailer 5$13,646 CAD
Retailer 6$14,785 CAD
Retailer 1$14,838 CAD
Retailer 2$16,461 CAD
Retailer 7$17,959 CAD
Retailer 3$21,427 CAD

39 data points across 7 retailers

19 retailers$12,146 CAD to $23,899 CAD

B
Cheapest Retailer
-
$12,146 CAD
$8,695 USD
B
Retailer 2
-
$12,414 CAD
$8,887 USD
View
B
Retailer 3
-
$12,662 CAD
$9,064 USD
View
B
Retailer 4
-
$13,135 CAD
View
B
Retailer 5
-
$13,646 CAD
$9,769 USD
View
B
Retailer 6
-
$13,646 CAD
$9,769 USD
View
Final sale: no returns
B
Retailer 7
-
$14,785 CAD
$10,584 USD
View
B
Retailer 8
-
$14,838 CAD
£8,364 GBP
View
B
Retailer 9
-
$15,011 CAD
$10,746 USD
View
B
Retailer 10
-
$15,746 CAD
$11,272 USD
View
B
Retailer 11
-
$16,008 CAD
$11,460 USD
View
B
Retailer 12
-
$16,008 CAD
$11,460 USD
View
B
Retailer 13
-
$16,461 CAD
€11,223 EUR
View
B
Retailer 14
-
$16,553 CAD
$11,850 USD
View
B
Retailer 15
-
$17,059 CAD
$12,212 USD
View
Retailer 16
-
$17,959 CAD
$12,856 USD
View
Price last confirmed 7 days ago
B
Retailer 17
-
$21,427 CAD
£12,078 GBP
View
B
Retailer 18
-
$22,744 CAD
$16,282 USD
View
Most Expensive
B
Diamond Quarter
1.51SI2H2120A7B6N · Oct 29
$23,899 CAD
£13,471 GBP
View
18 more retailers have this diamond
Prices start from $12,146 CADSave up to $11,753 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
$12,146 CAD