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Round|Natural|GIA

1.51ct G SI1 Round Natural Diamond

EX • G/SI1 • GIA 2136190577

Certificate GIA 2136190577

Diamond specifications and retailer prices

From $18,250 CAD
$13,065 USD
As of November 1, 2026
Save $12,382 CAD (40%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $36,649 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2136190577. Listed at 20 retailers as of November 1, 2026, with a 68% 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
G
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2136190577
Dimensions7.36 × 7.34 × 4.56 mm
L/W Ratio1.00
Culet sizeNone
Top View
7.36 mm7.34 mm1.51 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2136190577
Side View
Table 56.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 62.1%

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: Nov 1
Current: $32,563 CAD|Low: $18,250 CAD|High: $32,955 CAD|Avg: $23,379 CAD|-1.1%
Retailer 1
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 16$18,250 CAD
Retailer 11$19,072 CAD
Retailer 2$19,168 CAD
Retailer 4$19,526 CAD
Retailer 19$20,451 CAD
Retailer 7$20,850 CAD
Retailer 13$21,800 CAD
Retailer 15$21,902 CAD
Retailer 3$22,240 CAD
Retailer 9$22,588 CAD
Retailer 5$23,457 CAD
Retailer 6$23,524 CAD
Retailer 17$23,524 CAD
Retailer 8$24,214 CAD
Retailer 18$24,306 CAD
Retailer 12$25,137 CAD
Retailer 10$29,537 CAD
Retailer 14$30,632 CAD
Retailer 1$32,563 CAD

40 data points across 19 retailers

20 retailers$18,250 CAD to $30,632 CAD

B+
Cheapest Retailer
-
$18,250 CAD
$13,065 USD
B
Retailer 2
-
$19,072 CAD
$13,653 USD
View
B
Retailer 3
-
$19,168 CAD
$13,722 USD
View
B
Retailer 4
-
$19,526 CAD
View
B
Retailer 5
-
$20,451 CAD
$14,640 USD
View
B
Retailer 6
-
$20,850 CAD
$14,926 USD
View
B
Retailer 7
-
$21,800 CAD
£12,288 GBP
View
Retailer 8
-
$21,902 CAD
A$24,121 AUD
View
Price last confirmed 9 days ago
B
Retailer 9
-
$22,240 CAD
$15,921 USD
View
B
Retailer 10
-
$22,588 CAD
$16,170 USD
View
B
Retailer 11
-
$23,457 CAD
$16,792 USD
View
B
Retailer 12
-
$23,524 CAD
$16,840 USD
View
B
Retailer 13
-
$23,524 CAD
$16,840 USD
View
B
Retailer 14
-
$24,214 CAD
$17,334 USD
View
B
Retailer 15
-
$24,306 CAD
$17,400 USD
View
B
Retailer 16
-
$25,137 CAD
€17,138 EUR
View
B
Retailer 17
-
$29,537 CAD
$21,145 USD
View
B
Retailer 18
-
$30,632 CAD
ZAR 354,262 ZAR
View
Retailer 19
-
$32,563 CAD
£18,355 GBP
View
Price under review
Most Expensive
Diamond Quarter
1.51SI1G217770E1N · Oct 29
$36,649 CAD
£20,658 GBP
View
Price under review
19 more retailers have this diamond
Prices start from $18,250 CADSave up to $12,382 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
$18,250 CAD