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Cushion|Natural|GIA

1.71ct K SI1 Cushion Natural Diamond

EX • K/SI1 • GIA 6551325602

Certificate GIA 6551325602

Diamond specifications and retailer prices

From $3,780 USD
As of November 5, 2026
Save $2,842 USD (43%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $6,622 USD at MOH London · As of November 2, 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6551325602. Listed at 6 retailers as of November 2, 2026, with prices from $3,780 to $6,622, a $2,842 spread on the same certified stone. MOH London lists it at $6,622. 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
K
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6551325602
Dimensions7.69 × 6.00 × 4.09 mm
L/W Ratio1.28
Culet sizeNone
Key to symbols
Crystal, Feather, Needle, Natural
Top View
7.69 mm6.00 mm1.71 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6551325602
Side View
Table 63.0%CrownGirdlePavilionCulet: NoneDepth 68.2%

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: Nov 5
Current: $6,622 USD|Low: $3,780 USD|High: $6,702 USD|Avg: $4,678 USD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 6$3,780 USD
Retailer 5$3,960 USD
Retailer 3$3,986 USD
Retailer 2$4,456 USD
Retailer 4$4,833 USD
MOH London$6,622 USD

44 data points across 6 retailers

6 retailers$3,780 USD to $6,622 USD

A
Cheapest Retailer
-
$3,780 USD
Retailer 2
-
$3,960 USD
View
Price last confirmed 13 days ago
B+
Retailer 3
-
$3,986 USD
View
B+
Retailer 4
-
$4,456 USD
View
B+
Retailer 5
-
$4,833 USD
View
Most Expensive
B
MOH London
D8A6D52EE · Nov 2
$6,622 USD
£5,214 GBP
View
5 more retailers have this diamond
Prices start from $3,780 USDSave up to $2,842 USD

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
1.71ct Cushion
$3,780 USD