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Cushion|Natural|GIA

1.71ct J SI1 Cushion Natural Diamond

EX • J/SI1 • GIA 2151050511

Certificate GIA 2151050511

Diamond specifications and retailer prices

From $10,302 CAD
$7,375 USD
As of October 28, 2026
Save $3,999 CAD (28%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $19,068 CAD at MOH London · As of November 1, 2026
View at MOH London

About this 1.71ct natural cushion diamond

This 1.71ct natural cushion sits in the one-and-a-half to two carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2151050511. Listed at 9 retailers as of October 28, 2026, with a 39% 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

1.71
Carat
J
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2151050511
Dimensions6.71 × 6.65 × 4.63 mm
L/W Ratio1.01
Culet sizeNone
Top View
6.71 mm6.65 mm1.71 ctJ / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 2151050511
Side View
Table 61.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 69.5%

Caratlytics Score

How it works →
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 28
Current: $19,068 CAD|Low: $10,077 CAD|High: $19,296 CAD|Avg: $13,406 CAD|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 1, 2026
Retailer 4$10,302 CAD
Retailer 5$11,084 CAD
Retailer 6$12,888 CAD
Retailer 2$12,906 CAD
Retailer 7$13,676 CAD
Retailer 3$14,301 CAD
MOH London$19,068 CAD

42 data points across 7 retailers

9 retailers$10,302 CAD to $14,301 CAD

B
Cheapest Retailer
-
$10,302 CAD
$7,375 USD
B
Retailer 2
-
$11,084 CAD
$7,935 USD
View
Final sale: no returns
B
Retailer 3
-
$12,888 CAD
$9,226 USD
View
B
Retailer 4
-
$12,906 CAD
£7,275 GBP
View
B
Retailer 5
-
$13,676 CAD
$9,790 USD
View
B
Retailer 6
-
$13,676 CAD
$9,790 USD
View
B
Retailer 7
-
$14,137 CAD
$10,120 USD
View
B
Retailer 8
-
$14,301 CAD
€9,750 EUR
View
Most Expensive
MOH London
B6593994D · Nov 1
$19,068 CAD
£10,748 GBP
View
Price under review
8 more retailers have this diamond
Prices start from $10,302 CADSave up to $3,999 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
1.71ct Cushion
$10,302 CAD