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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 $6,880 NZD
As of November 6, 2026
Save $7,684 NZD (53%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $14,564 NZD 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 $6,880 to $14,564, a $7,684 spread on the same certified stone. MOH London lists it at $14,564. 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
Colour
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: $14,564 NZD|Low: $6,880 NZD|High: $14,900 NZD|Avg: $9,793 NZD|-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$6,880 NZD
Retailer 2$7,235 NZD
Retailer 7$8,238 NZD
Retailer 3$8,895 NZD
Retailer 5$9,029 NZD
Retailer 10$9,442 NZD
Retailer 8$9,673 NZD
Retailer 4$10,318 NZD
Retailer 6$11,186 NZD
MOH London$14,564 NZD

25 data points across 10 retailers

14 retailers$6,880 NZD to $14,564 NZD

A
Cheapest Retailer
-
$6,880 NZD
B+
Retailer 2
-
$7,235 NZD
View
B+
Retailer 3
-
$8,238 NZD
View
B+
Retailer 4
-
$8,520 NZD
View
B+
Retailer 5
-
$8,523 NZD
View
B+
Retailer 6
-
$8,895 NZD
View
B
Retailer 7
-
$8,967 NZD
View
B+
Retailer 8
-
$9,029 NZD
View
Retailer 9
-
$9,256 NZD
View
Price last confirmed 22 days ago
B
Retailer 10
-
$9,442 NZD
View
B+
Retailer 11
-
$9,673 NZD
View
B
Retailer 12
-
$10,318 NZD
View
B
Retailer 13
-
$11,186 NZD
View
Most Expensive
B
MOH London
CDD8FB650 · Nov 4
$14,564 NZD
£6,357 GBP
View
13 more retailers have this diamond
Prices start from $6,880 NZDSave up to $7,684 NZD

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
$6,880 NZD