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Cushion|Natural|GIA

1.70ct K SI1 Cushion Natural Diamond

EX • K/SI1 • GIA 2557529237

Certificate GIA 2557529237

Diamond specifications and retailer prices

From $3,814 USD
As of November 6, 2026
Save $4,259 USD (53%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $8,073 USD at MOH London · As of November 4, 2026
View at MOH London

About this 1.7ct natural cushion diamond

This 1.7ct 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 2557529237. Listed at 14 retailers as of November 4, 2026, with prices from $3,814 to $8,073, a $4,259 spread on the same certified stone. MOH London lists it at $8,073. 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

1.70
Carat
K
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2557529237
Dimensions8.19 × 6.11 × 4.14 mm
L/W Ratio1.34
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Pinpoint
Top View
8.19 mm6.11 mm1.70 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2557529237
Side View
Table 66.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 67.8%

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 6
Current: $8,073 USD|Low: $3,814 USD|High: $8,260 USD|Avg: $5,429 USD|-2.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 9$3,814 USD
Retailer 2$4,011 USD
Retailer 7$4,567 USD
Retailer 3$4,931 USD
Retailer 5$5,005 USD
Retailer 10$5,234 USD
Retailer 8$5,362 USD
Retailer 4$5,720 USD
Retailer 6$6,201 USD
MOH London$8,073 USD

25 data points across 10 retailers

14 retailers$3,814 USD to $8,073 USD

A
Cheapest Retailer
-
$3,814 USD
B+
Retailer 2
-
$4,011 USD
View
B+
Retailer 3
-
$4,567 USD
View
B+
Retailer 4
-
$4,723 USD
View
B+
Retailer 5
-
$4,725 USD
View
B+
Retailer 6
-
$4,931 USD
View
B
Retailer 7
-
$4,971 USD
View
B+
Retailer 8
-
$5,005 USD
View
Retailer 9
-
$5,131 USD
View
Price last confirmed 22 days ago
B
Retailer 10
-
$5,234 USD
View
B+
Retailer 11
-
$5,362 USD
View
B
Retailer 12
-
$5,720 USD
View
B
Retailer 13
-
$6,201 USD
View
Most Expensive
B
MOH London
CDD8FB650 · Nov 4
$8,073 USD
£6,357 GBP
View
13 more retailers have this diamond
Prices start from $3,814 USDSave up to $4,259 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
1.70ct Cushion
$3,814 USD